,transcriber's ,notes3 ,underscores 80 before and after a word or phrase indicate italics in the original text4 ,equal signs 80 before and after a word or phrase indicate bold in the original text4 ,small capitals have been converted to ,,solid capitals4 ,illustrations have been moved so they do not break up paragraphs4 ,typographical and punctuation errors have been silently corrected4 ,a ,,theory ,,of ,,pure ,,design ,harmony1 ,balance1 ,rhythm ,,with ,,illustrations ,,and ,,diagrams ,,by ,,denman ,w4 ,,ross1 ,,ph4 ,d4 ,,lecturer ,,on ,,the ,,theory ,,of ,,design ,,in ,,harvard ,,university1 ,,fellow ,,of ,,the ,,american ,,academy ,,of ,,arts ,,and ,,sciences ,,boston ,,and ,,new ,,york ,,houghton1 ,,mifflin ,,and ,,company ,,mdccccvii ,,copyright #aijg ,,by ,,denman ,w4 ,,ross ,,all ,,rights ,,reserved ,published ,april1 #aijg ,,preface ,my purpose in this book is to elucidate1 so far as ,i can1 the principles which underlie the practice of drawing and painting as a ,fine ,art4 ,art is generally regarded as the expression of feelings and emotions which have no explanation except perhaps in such a word as inspiration1 which is expletive rather than explanatory4 ,art is regarded as the one activity of man which has no scientific basis1 and the appreciation of ,art is said to be a matter of taste in which no two persons can be expected to agree4 ,it is my purpose in this book to show how1 in the practice of ,art1 as in all other practices1 we use certain terms and follow certain principles4 ,being defined and explained1 these terms and principles may be known and understood by everybody4 ,they are1 so to speak1 the form of the language4 ,while an understanding of the terms and principles of ,art will not1 in itself1 enable any one to produce important works1 such works are not produced without it4 ,it must be understood1 however1 that the understanding of terms and principles is not1 necessarily1 an understanding in words4 ,it may lie in technical processes and in visual images and may never rise1 or shall ,i say fall1 to any formulation in words1 either spoken or written4 ,the terms and principles of ,art have1 as a rule1 been understood by the artist in the form of technical processes and visual images1 not in words4 ,it is in words that they will become generally understood4 ,it is in words that ,i propose to explain them in this book4 ,i want to bring to definition what1 until now1 has not been clearly defined or exactly measured4 ,in a sense this book is a contribution to ,science rather than to ,art4 ,it is a contribution to ,science made by a painter1 who has used his ,art in order to understand his ,art1 not to produce ,works of ,art4 ,in a passage of ,plato 7,philebus1 #ee7 ,socrates says3 8,if arithmetic1 mensuration1 and weighing be taken out of any art1 that which remains will not be much48 8,not much1 certainly10 was the reply4 ,the only thing which remains in ,art1 beyond measurable quantities and qualities1 is the personality1 the peculiar ability or genius of the artist himself4 ,that1 ,i believe1 admits of no explanation4 ,the element of personality is what we mean when we speak of the element of inspiration in a ,work of ,art4 ,underlying this element of personality are the terms and principles of the art4 ,in them the artist has found the possibility of expression2 in them his inspiration is conveyed to his fellowmen4 ,i propose to explain1 not the artist1 but the mode of expression which the artist uses4 ,my purpose1 in scientific language1 is to define1 classify1 and explain the phenomena of ,design4 ,in trying to do that1 ,i have often been at a loss for terms and have been obliged1 in certain instances1 to use terms with new meanings1 meanings which differ1 more or less1 from those of common usage and from those of writers in other branches of learning4 ,in all such cases ,i have taken pains to define my terms and to make my meanings perfectly clear4 ,i do not expect any one to read this book who is not willing to allow to my terms the meanings ,i have given them4 ,those who are unwilling to accept my definitions will certainly not follow me to my conclusions4 ,i am giving this book to the ,public with great reluctance4 ,though ,i have had it in mind for many years and have put no end of thought and work into it1 it seems to me inadequate and unsatisfactory4 ,it will hardly be published before ,i shall discover in it errors both of omission and commission4 ,the book presents a new definition of principles1 a new association of ideas4 ,it is inconceivable that this1 my first published statement1 should be either consistent or complete4 ,it will be a long time1 ,i am sure1 before it can be brought to a satisfactory shape4 ,it is simply the best statement that ,i can make at this time4 ,one reason1 perhaps my best reason1 for publishing this ,theory1 before it is completely worked out1 is to bring other students into the investigation4 ,i need their coperation1 their suggestions1 and their criticisms4 ,without assistance from others the book would not be as good as it is4 ,i am indebted to a number of persons for helpful suggestions4 ,i am particularly indebted to three men1 who have been associated with me in my teaching3 ,william ,luther ,mowll1 ,henry ,hunt ,clark1 and ,edgar ,oscar ,parker4 ,each of them has had a share in the work4 ,i am indebted to ,professor ,mowll for very important contributions to the doctrine of ,rhythm1 as it is presented in this book1 and he has kindly helped me in the revision of the work for the press4 ,my friend ,dean ,briggs has kindly read my proof sheets1 and ,i am indebted to him for many suggestions4 ,,denman ,w4 ,,ross4 ,,harvard ,,university1 ,february #af1 #aijg4 ,,contents ,,introduction #a ,,positions ,,in ,,harmony1 ,,balance1 ,,and ,,rhythm #i ,,lines ,,in ,,harmony1 ,,balance1 ,,and ,,rhythm #cg ,,outlines ,,in ,,harmony1 ,,balance1 ,,and ,,rhythm #if ,,tones ,,and ,,tone-,,relations #aca ,,sequences ,,of ,,values ,,and ,,colors #adc ,,tone-,,harmony #aeh ,,tone-,,balance #agb ,,tone-,,rhythm #ahb ,,composition1 ,,general ,,rules #ahf ,,the ,,study ,,of ,,order ,,in ,,nature ,,and ,,in ,,works ,,of ,,art #aij ,,conclusion #aib ,,paragraph ,,index #aie ,,introduction ,,the ,,meaning ,,of ,,design #a4 ,by ,design ,i mean ,order in human feeling and thought and in the many and varied activities by which that feeling or that thought is expressed4 ,by ,order ,i mean1 particularly1 three things1--,harmony1 ,balance1 and ,rhythm4 ,these are the principal modes in which ,order is revealed in ,nature and1 through ,design1 in ,works of ,art4 ,,the ,,order ,,of ,,harmony #b4 ,whenever two or more impressions or ideas have something in common that is appreciable1 they are in harmony1 in the measure of what they have in common4 ,the harmony increases as the common element increases2 or the common elements4 ,it diminishes in the measure of every difference or contrast4 ,by the ,order of ,harmony ,i mean some recurrence or repetition1 some correspondence or likeness4 ,the likeness may be in sounds or in sights1 in muscular or other sense-impressions4 ,it may lie in sensations1 in perceptions1 in ideas1 in systems of thought4 ,,the ,,order ,,of ,,balance #c4 ,by the ,order of ,balance ,i mean some equal opposition and consequent equilibrium1 as it occurs at some moment of ,time or at some point of ,space2 an equilibrium which induces1 for the moment and in its place1 a suspension of all change or movement1 and causes a pause or a rest4 ,the equilibrium may be one of physical forces 7forces of weight or resistance7 or forces of will4 ,it may be an equilibrium of sense-impressions or attractions1 of interests1 of alternative propositions or ideas4 ,it may be the equilibrium of a perfect antithesis4 ,certain moments of ,time1 certain points of ,space1 are distinguished from others by instances of equilibrium or balance4 ,the balance being lost1 in any case1 we have at once some movement4 ,if this movement is regular1 and marked in its regularity1 we get1 instead of ,balance1 ,rhythm4 ,,the ,,order ,,of ,,rhythm #d4 ,by the ,order of ,rhythm ,i mean changes of sensation2 changes in muscular impressions as we feel them1 in sounds as we hear them1 in sights as we see them2 changes in objects1 people1 or things as we know them and think of them1 changes which induce the feeling or idea of movement1 either in the duration of ,time or in the extension of ,space2 provided that the changes take place at regular and marked intervals of time or in regular and marked measures of space4 ,by regular intervals and measures ,i mean equal or lawfully varying intervals and measures4 ,i do not mean1 by ,rhythm1 changes simply1 inducing the sense or idea of movement3 ,i mean1 by ,rhythm1 a regularity of changes in a regularity of measures1 with the effect of movement upon our minds4 ,rhythms in ,time differ from ,rhythms in ,space1 inasmuch as the movement in ,time is in one direction1 inevitably4 ,it lies in the duration and passing of time1 from which nothing escapes4 ,the movement in space1 on the contrary1 may be in any one of many possible directions4 ,a movement in different directions1 particularly in contrary directions1 amounts to a negation of movement4 ,in any space-rhythm1 therefore1 the direction in which the rhythm leads us1 the direction in which we follow it1 must be unmistakable4 #e4 ,of these three principles of ,order1 the first and foremost1 the most far-reaching and comprehensive1 is the principle of ,harmony4 ,we have ,harmony in all balances1 and we have it also in all rhythms4 ,it is1 therefore1 undesirable to think of the three principles as cordinate4 ,it will be better to think of the principle of ,harmony first1 and then of two other principles1 those of ,balance and of ,rhythm1 as lying within the range of ,harmony but not coextensive with it4 ,we might express the idea in a logical diagram4 ,illustration3 ,fig4 #a ,within the field of ,harmony we have two distinct modes of ,order--,balance and ,rhythm2 but we have ,harmony beyond the range of ,balance and beyond the range of ,rhythm4 ,in cases where rhythms1 corresponding in character and in direction of movement1 are set side by side1 one on the right1 the other on the left1 of a vertical axis1 so that they balance1 one against the other1 and the vertical axis of the balance is the line of the movement1 we have the union of all three principles4 ,this idea1 also1 may be expressed in a logical diagram4 ,illustration3 ,fig4 #b ,examples of this union of the three principles of ,order will be given farther on4 ,,beauty ,a ,,supreme ,,instance ,,of ,,order #f4 ,i refrain from any reference to ,beauty as a principle of ,design4 ,it is not a principle1 but an experience4 ,it is an experience which defies analysis and has no explanation4 ,we distinguish it from all other experiences4 ,it gives us pleasure1 perhaps the highest pleasure that we have4 ,at the same time it is idle to talk about it1 or to write about it4 ,the less said about it the better4 8,it is beautiful10 you say4 ,then somebody asks1 8,why is it beautiful80 ,there is no answer to that question4 ,you say it is beautiful because it gives you pleasure3 but other things give you pleasure which are not beautiful4 ,pleasure is1 therefore1 no criterion of ,beauty4 ,what is the pleasure which ,beauty gives8 ,it is the pleasure which you have in the sense of ,beauty4 ,that is all you can say4 ,you cannot explain either the experience or the kind of pleasure which it gives you4 ,while ,i am quite unable to give any definition or explanation of ,beauty1 ,i know where to look for it1 where ,i am sure to find it4 ,the ,beautiful is revealed1 always1 so far as ,i know1 in the forms of ,order1 in the modes of ,harmony1 of ,balance1 or of ,rhythm4 ,while there are many instances of ,harmony1 ,balance1 and ,rhythm which are not particularly beautiful1 there is1 ,i believe1 nothing really beautiful which is not orderly in one or the other1 in two1 or in all three of these modes4 ,in seeking the ,beautiful1 therefore1 we look for it in instances of ,order1 in instances of ,harmony1 ,balance1 and ,rhythm4 ,we shall find it in what may be called supreme instances4 ,this is perhaps our nearest approach to a definition of ,beauty3 that it is a supreme instance of ,order1 intuitively felt1 instinctively appreciated4 ,,the ,,arts ,,as ,,different ,,modes ,,of ,,expression #g4 ,the ,arts are different forms or modes of expression3 modes of feeling1 modes of thought1 modes of action4 ,there are many ,arts in which different terms of expression1 different materials1 different methods are used4 ,the principal ,arts are 7#a7 ,gymnastics1 including ,dancing1 7#b7 ,music1 7#c7 ,speech1 spoken and written1 7#d7 ,construction with all kinds of materials1 7#e7 ,sculpture1 including ,modeling and ,carving1 7#f7 ,drawing and ,painting4 ,these are the principal ,arts1 but there are many others1 more or less connected with them4 ,design comes into all of these ,arts1 bringing ,order1 in some cases ,beauty4 ,,the ,,art ,,of ,,drawing ,,and ,,painting #h4 ,the ,art which ,i have studied and practiced1 the ,art in which ,i am giving instruction1 is that of ,drawing and ,painting4 ,by the ,art of ,drawing and ,painting ,i mean expression in pigment-tones 7values1 colors1 intensities of color7 spread in different measures or quantities and in different shapes3 shapes being differences of character given to a line by its straightness or curvature1 to a spot or area by its outline or contour4 ,by ,drawing and ,painting ,i mean1 therefore1 expression by lines and spots of paint4 ,,two ,,modes ,,of ,,drawing ,,and ,,painting #i4 ,there are two modes of ,drawing and ,painting1 the mode of ,pure ,design and the mode of ,representation4 ,,pure ,,design #aj4 ,by ,pure ,design ,i mean simply ,order1 that is to say1 ,harmony1 ,balance1 and ,rhythm1 in lines and spots of paint1 in tones1 measures1 and shapes4 ,pure ,design appeals to the eye just as absolute ,music appeals to the ear4 ,the purpose in ,pure ,design is to achieve ,order in lines and spots of paint1 if possible1 the perfection of ,order1 a supreme instance of it1 the ,beautiful3 this with no other1 no further1 no higher motive2 just for the satisfaction1 the pleasure1 the delight of it4 ,in the practice of ,pure ,design we aim at ,order and hope for ,beauty4 ,even the motive of giving pleasure to others lies beyond the proper purpose of ,pure ,design1 though it constantly happens that in pleasing ourselves we give others pleasure4 ,,applications ,,of ,,design #aa4 ,the application of ,design in the various ,arts and ,crafts is well understood and appreciated4 ,we have many instances and examples in the ,art of the ,past4 ,the possibility of ,pure ,design1 pure ,art1 followed for the sake of ,order and ,beauty1 with no purpose of service or of utility1 is not at all understood or appreciated4 ,i think of ,pure ,design as ,i think of ,music4 ,music is the arrangement and composition of sounds for the sake of ,order and ,beauty1 to give pleasure to the ear of the composer4 ,pure ,design is the arrangement and composition of lines and spots of paint for the sake of ,order and ,beauty1 to give pleasure to the eye of the designer4 ,i am prepared to admit1 however1 that as ,music1 once created1 being appropriate to the occasion when it is performed and to the mood of the listeners1 may give pleasure to many persons1 so ,pure ,design1 once achieved1 being appropriate to the time and the place of exhibition and to the mood of the beholders1 may give pleasure to others besides the designer4 ,in that sense1 ,i am willing to allow that ,pure ,design may be ,applied ,art1--,art applied in the service of ,humanity1 its purpose being to bring pleasure into human experience4 ,the underlying motive of it1 however1 is found not in the service of humanity1 but in the ideal of the artist4 ,he aims at ,order and hopes for ,beauty1 as the highest reward of his effort4 ,john ,sebastian ,bach said of ,music3 8,it is for the glory of ,god and a pleasant recreation40 ,that is what ,i mean4 ,the designer1 like the musician1 seeks first of all to achieve ,order and ,beauty for the sake of ,order and ,beauty4 ,that is his religion1--the worship of the ,ideal4 ,when the ,ideal is realized1 the object which has been produced may serve a useful purpose in giving pleasure1 and perhaps inspiration1 to others4 ,the principles of ,pure ,design which are defined and illustrated in this book are the principles which should be followed in all applications of ,design in the ,arts and ,crafts4 ,in such applications1 however1 the ideals of design are often obscured by the consideration of materials and technical processes on the one hand1 and of service or utility on the other4 ,it will be worth while1 therefore1 for those who wish to bring ,design into their work1 whatever that is1 to study ,design in the abstract1 ,pure ,design1 so that they may know1 before they undertake to use it1 what ,design is4 ,it is the purpose of this book to explain what it is4 ,,representation #ab4 ,order1 which in ,pure ,design is an end1 becomes in ,representation a means to an end2 the end being the ,truth of ,representation4 ,in ,representation we are no longer dealing1 as in ,pure ,design1 with meaningless terms1 or1 if the terms have meanings1 with no regard for them4 ,in ,representation we are putting lines and spots of paint together for the sake of their meanings4 ,design in ,representation means ,order in the composition or arrangement of meanings4 ,what we aim at is the ,truth of ,representation in a form of expression which will be simple1 clear1 reasonable1 and consistent1 as well as true4 ,the attention must be directed to what is important1 away from what is unimportant4 ,objects1 people1 and things represented must be brought out and emphasized or suppressed and subordinated1 according to the ,idea or ,truth which the artist wishes to express4 ,the irrelevant must be eliminated4 ,the inconsistent and the incongruous must be avoided4 ,that is what ,i mean by ,design in ,representation1 the knowledge of ,nature and ,life presented in a systematic1 logical1 and orderly way4 ,,representation ,,in ,,forms ,,of ,,design #ac4 ,it sometimes happens that we have the ,truth of ,representation in a form of ,pure ,design or ,pure ,design combined with ,representation4 ,in ,poetry we have the meaning of the words in the measures of the verse4 ,so in ,representation it is sometimes possible to achieve the ,truth in forms of ,harmony1 ,balance1 and ,rhythm4 ,in such cases the appeal is simultaneously to the love of ,knowledge and to the sense of ,order and of ,beauty1 so that we have an sthetic pleasure in the statement of the ,truth4 ,in this book ,i shall explain what ,i mean by ,drawing and ,painting in ,pure ,design4 ,later1 ,i hope to write another book on ,design in ,representation4 ,,drawing ,,and ,,painting ,,in ,,pure ,,design ,,positions ,,definition ,,of ,,positions #ad4 ,take a pencil and a piece of paper4 ,with the pencil1 on the paper1 mark a dot or point4 ,illustration3 ,fig4 #c ,by this dot 7,a7 three ideas are expressed3 an idea of ,tone1 the tone of lead in the pencil2 an idea of ,measure1 the extent of the space covered by the dot2 and an idea of ,shape1 the character given to the dot by its outline or contour4 ,the dot is so small that its tone1 its measure1 and its shape will not be seriously considered4 ,there is another idea1 however1 which is expressed by the dot or point1--an idea of ,position4 ,that is its proper meaning or signification4 ,there is presumably a reason for giving the dot one position rather than another4 ,,positions ,,determined ,,by ,,directions ,,and ,,distances #ae4 ,put another dot 7,b7 on your paper1 not far from dot 8,a40 ,illustration3 ,fig4 #d ,we have now a relation of two positions1--the relation of position 8,a0 to position 8,b40 ,the relation is one of ,directions and of ,distances4 ,proceeding from 8,a0 in a certain direction to a certain distance we reach 8,b40 ,proceeding from 8,b0 in a certain direction and to a certain distance we reach 8,a40 ,every position means two things2 a direction and a distance taken from some point which may be described as the premise-point4 ,,directions #af4 ,directions may be referred either to the ,horizontal or to the ,vertical4 ,referring them to the horizontal1 we say of a certain direction1 that it is up-to-the-left1 or up-to-the-right1 or down-to-the-left1 or down-to-the-right1 a certain number of degrees4 ,it may be thirty 7#cj71 it may be forty-five 7#de71 it may be sixty 7#fj71--;any number of degrees up to ninety 7#ij71 in which case we say simply that the direction is up or down4 ,directions on the horizontal may be described by the terms1 to the right or to the left4 ,illustration3 ,fig4 #e ,the method of describing and defining different directions from any point1 as a center1 is clearly explained by this diagram4 ,,distances #ag4 ,the definition of ,distances in any direction is well understood4 ,in defining position 8,b10 in ,fig4 #d1 we say that it is1 in a direction from 8,a10 the premise-point1 down-to-the-right forty-five degrees 7#de71 that it is at a distance from 8,a0 of one inch4 ,distances are always taken from premise-points4 ,,positions ,,determined ,,by ,,triangulations #ah4 ,if we mark a third dot1 8,c10 on our paper and wish to define its position1 we may give the direction and the distance from 8,a10 or from 8,b10 or1 if we prefer1 we may follow the principle of ,triangulation and give two directions1 one from 8,a0 and the other from 8,b40 ,no distances need be given in that case4 ,the position of 8,c0 will be found at the intersection of the two directions4 ,illustration3 ,fig4 #f ,the principle of ,triangulation is illustrated in the above diagram4 ,,intervals #ai4 ,we shall have occasion to speak not only of ,distances1 but of ,intervals4 ,they may be defined as intermediate spaces4 ,the spaces between the points 8,a0 and 8,b10 8,a0 and 8,c10 8,b0 and 8,c10 in ,fig4 #f1 are ,intervals4 ,,scale ,,in ,,relations ,,of ,,positions #bj4 ,given any relation of positions1 the scale may be changed by changing the intervals1 provided we make no change of directions4 ,that is well understood4 ,before proceeding to the considerations which follow1 ,i must ask the reader to refer to the definitions of ,harmony1 ,balance1 and ,rhythm which ,i have given in the ,introduction4 ,,the ,,order ,,of ,,harmony ,,in ,,positions3 ,,directions1 ,,distances1 ,,intervals #ba4 ,all ,positions lying in the same direction and at the same distance from a given point1 taken as a premise-point1 are one4 ,there is no such thing1 therefore1 as a ,harmony of ,positions4 ,positions in ,harmony are identical positions4 ,two or more positions may1 however1 lie in the same direction from or at the same distance from a given point taken as a premise-point4 ,in that case1 the two or more positions1 having a direction or a distance in common1 are1 to that extent1 in harmony4 #bb4 ,what do we mean by ,harmony of ,directions8 ,illustration3 ,fig4 #g ,this is an example of ,direction-,harmony4 ,all the points or positions lie in one and the same direction from the premise-point 8,a40 ,the distances from 8,a0 vary4 ,there is no ,harmony of ,intervals4 ,directions being defined by angles of divergence1 we may have a ,harmony of ,directions in the repetition of similar angles of divergence3 in other words1 when a certain change of direction is repeated4 ,illustration3 ,fig4 #h ,in this case the angles of divergence are equal4 ,there is a ,harmony1 not only in the repetition of a certain angle1 but in the correspondence of the intervals4 ,illustration3 ,fig4 #i ,this is an example of ,harmony produced by the repetition of a certain alternation of directions4 ,illustration3 ,fig4 #aj ,in this case we have ,harmony in the repetition of a certain relation of directions 7angles of divergence74 ,in these cases1 ,fig4 #i and ,fig4 #aj1 there is ,harmony also1 in the repetition of a certain relation of intervals4 #bc4 ,two or more positions may lie at the same distance from a given point taken as a premise-point4 ,in that case the positions1 having a certain distance in common1 are1 to that extent1 in ,harmony4 ,illustration3 ,fig4 #aa ,this is an example of ,distance-,harmony4 ,all the points are equally distant from the premise-point 8,a40 ,the directions vary4 ,we may have ,distance-,harmony1 also1 in the repetition of a certain relation of distances4 ,illustration3 ,fig4 #ab ,this is an illustration of what ,i have just described4 ,the ,harmony is of a certain relation of distances repeated4 #bd4 ,intervals1 that is to say intermediate spaces1 are in ,harmony when they have the same measure4 ,illustration3 ,fig4 #ac ,in this case we have1 not only a ,harmony of ,direction1 as in ,fig4 #g1 but also a ,harmony of ,intervals4 ,illustration3 ,fig4 #ad ,in this case the points are in a group and we have1 as in ,fig4 #aa1 a ,harmony of ,distances from the premise-point 8,a40 ,we have also a ,harmony of ,intervals1 the distances between adjacent points being equal4 ,we have a ,harmony of ,intervals1 not only when the intervals are equal1 but when a certain relation of intervals is repeated4 ,illustration3 ,fig4 #ae ,the repetition of the ratio one to three in these intervals is distinctly appreciable4 ,in the repetition we have ,harmony1 though we have no ,harmony in the terms of the ratio itself1 that is to say1 no ,harmony that is appreciable in the sense of vision4 ,the fact that one and three are both multiples of one means that one and three have something in common1 but inasmuch as the common divisor1 one1 cannot be visually appreciated1 as such 7,i feel sure that it cannot71 it has no interest or value in ,pure ,design4 ,illustration3 ,fig4 #af ,the relation of intervals is1 in this case1 the relation of three-one-five4 ,we have ,harmony in the repetition of this relation of intervals though there is no ,harmony in the relation itself1 which is repeated4 ,illustration3 ,fig4 #ag ,in this case1 also1 we have ,interval-,harmony1 but as the intervals in the vertical and horizontal directions are shorter than the intervals in the diagonal directions1 the ,harmony is that of a relation of intervals repeated4 #be4 ,in moving from point to point in any series of points1 it will be found easier to follow the series when the intervals are short than when they are long4 ,in ,fig4 #ag it is easier to follow the vertical or horizontal series than it is to follow a diagonal series1 because in the vertical and horizontal directions the intervals are shorter4 ,illustration3 ,fig4 #ah ,in this case it is easier to move up or down on the vertical than in any other directions1 because the short intervals lie on the vertical4 ,the horizontal intervals are longer1 the diagonal intervals longer still4 ,illustration3 ,fig4 #ai ,in this case the series which lies on the diagonal up-left-down-right is the more easily followed4 ,it is possible in this way1 by means of shorter intervals1 to keep the eye on certain lines4 ,the applications of this principle are very interesting4 #bf4 ,in each position1 as indicated by a point in these arrangements1 may be placed a composition of dots1 lines1 outlines1 or areas4 ,the dots indicate positions in which any of the possibilities of design may be developed4 ,they are points from which all things may emerge and become visible4 ,,the ,,order ,,of ,,balance ,,in ,,positions3 ,,directions1 ,,distances1 ,,and ,,intervals #bg4 ,directions balance when they are opposite4 ,illustration3 ,fig4 #bj ,the opposite directions1 right and left1 balance on the point from which they are taken4 #bh4 ,equal distances in opposite directions balance on the point from which the directions are taken4 ,illustration3 ,fig4 #ba ,the equal distances ,,ab and ,,ac1 taken in the directions ,,ab and ,,ac respectively1 balance on the point 8,a0 from which the directions are taken4 #bi4 ,two directions balance when1 taken from any point1 they diverge at equal angles from any axis1 vertical1 horizontal1 or diagonal4 ,illustration3 ,fig4 #bb ,the directions ,,ab and ,,ac balance on the vertical axis ,,ad from which they diverge equally1 that is to say1 at equal angles4 #cj4 ,equal distances balance in directions which diverge equally from a given axis4 ,illustration3 ,fig4 #bc ,the equal distances ,,ab and ,,ac balance in the directions ,,ab and ,,ac which diverge equally from the axis ,,ad1 making the equal angles ,,cad and ,,dab4 ,both directions and distances balance on the vertical axis ,,ad4 #ca4 ,the positions ,b and ,c in ,fig4 #bc1 depending on balancing directions and distances1 balance on the same axis4 ,we should feel this balance of the positions ,a and ,b on the vertical axis even without any indication of the axis4 ,we have so definite an image of the vertical axis that when it is not drawn we imagine it4 ,illustration3 ,fig4 #bd ,in this case the two positions ,c and ,b cannot be said to balance1 because there is no suggestion1 no indication1 and no visual image of any axis4 ,it is only the vertical axis which will be imagined when not drawn4 #cb4 ,perfect verticality in relations of position suggests stability and balance4 ,the relation of positions ,c-,b in ,fig4 #bd is one of instability4 ,illustration3 ,fig4 #be ,these two positions are felt to balance because they lie in a perfectly vertical relation1 which is a relation of stability4 ,horizontality in relations1 of position is also a relation of stability4 ,see ,fig4 #bh1 p4 #ba4 #cc4 ,all these considerations lead us to the definition of ,symmetry4 ,by ,symmetry ,i mean opposite directions or inclinations1 opposite and equal distances1 opposite positions1 and in those positions equal1 corresponding1 and opposed attractions on a vertical axis4 ,briefly1 ,symmetry is right and left balance on a vertical axis4 ,this axis will be imagined when not drawn4 ,in ,symmetry we have a balance which is perfectly obvious and instinctively felt by everybody4 ,all other forms of ,balance are comparatively obscure4 ,some of them may be described as occult4 ,illustration3 ,fig4 #bf ,in this case we have a symmetry of positions which means opposite directions1 opposite and equal distances1 and similar and opposite attractions in those positions4 ,the attractions are black dots corresponding in tone1 measure1 and shape4 ,illustration3 ,fig4 #bg ,in this case we have a balance of positions 7directions and distances7 and attractions in those positions1 not only on the vertical axis but on a center4 ,that means ,symmetry regarding the vertical axis1 ,balance regarding the center4 ,if we turn the figure1 slightly1 from the vertical axis1 we shall still have ,balance upon a center and axial ,balance2 but ,symmetry1 which depends upon the vertical axis1 will be lost4 #cd4 ,the central vertical axis of the whole composition should predominate in symmetrical balances4 ,illustration3 ,fig4 #bh ,in this case we do not feel the balance of attractions clearly or satisfactorily1 because the vertical axis of the whole arrangement does not predominate sufficiently over the six axes of adjacent attractions4 ,it is necessary1 in order that symmetrical balance shall be instinctively felt1 that the central vertical axis predominate4 ,illustration3 ,fig4 #bi ,the central vertical axis is clearly indicated in this case4 ,illustration3 ,fig4 #cj ,here1 also1 the central vertical axis is clearly indicated4 #ce4 ,all relations of position 7directions1 distances1 intervals71 as indicated by dots or points1 whether orderly or not1 being inverted on the vertical axis1 give us an obvious symmetrical balance4 ,illustration3 ,fig4 #ca ,this is a relation of positions to be inverted4 ,illustration3 ,fig4 #cb ,here the same relation is repeated1 with its inversion to the right on a vertical axis4 ,the result is an obvious symmetrical balance4 ,if this inversion were made on any other than the vertical axis1 the result would be ,balance but not ,symmetry4 ,the balance would still be axial1 but the axis1 not being vertical1 the balance would not be symmetrical4 #cf4 ,in the case of any unsymmetrical arrangement of dots1 the dots become equal attractions in the field of vision1 provided they are near enough together to be seen together4 ,to be satisfactorily seen as a single composition or group they ought to lie1 all of them1 within a visual angle of thirty degrees4 ,we may1 within these limits1 disregard the fact that visual attractions lose their force as they are removed from the center of the field of vision4 ,as equal attractions in the field of vision1 the dots in any unsymmetrical arrangement may be brought into a balance by weighing the several attractions and indicating what ,i might call the center of equilibrium4 ,this is best done by means of a symmetrical inclosure or frame4 ,in ascertaining just where the center is1 in any case1 we depend upon visual sensitiveness or visual feeling1 guided by an understanding of the principle of balance3 that equal attractions1 tensions or pulls1 balance at equal distances from a given center1 that unequal attractions balance at distances inversely proportional to them4 ,given certain attractions1 to find the center1 we weigh the attractions together in the field of vision and observe the position of the center4 ,in simple cases we may be able to prove or disprove our visual feeling by calculations and reasoning4 ,in cases1 however1 where the attractions vary in their tones1 measures1 and shapes1 and where there are qualities as well as quantities to be considered1 calculations and reasoning become difficult if not impossible1 and we have to depend upon visual sensitiveness4 ,all balances of positions1 as indicated by dots corresponding in tone1 measure1 and shape1 are balances of equal attractions1 and the calculation to find the center is a very simple one4 ,illustration3 ,fig4 #cc ,here1 for example1 the several attractions1 corresponding and equal1 lie well within the field of vision4 ,the method followed to balance them is that which ,i have just described4 ,the center of equilibrium was found and then indicated by a symmetrical framing4 ,move the frame up or down1 right or left1 and the center of the frame and the center of the attractions within it will no longer coincide1 and the balance will be lost4 ,we might say of this arrangement that it is a ,harmony of ,positions due to the coincidence of two centers1 the center of the attractions and the center of the framing4 #cg4 ,it will be observed that the force of the symmetrical inclosure should be sufficient to overpower any suggestion of movement which may lie in the attractions inclosed by it4 ,illustration3 ,fig4 #cd ,in this case the dots and the inclosure are about equally attractive4 ,illustration3 ,fig4 #ce ,in this case the force of attractions in the symmetrical outline is sufficient to overpower any suggestion of instability and movement which may lie in the attractions inclosed by it4 ,there is another form of ,balance1 the ,balance of ,inclinations1 but ,i will defer its consideration until ,i can illustrate the idea by lines4 ,,the ,,order ,,of ,,rhythm ,,in ,,positions3 ,,directions1 ,,distances1 ,,intervals #ch4 ,in any unsymmetrical relation of positions 7directions1 distances1 intervals71 in which the balance-center is not clearly and sufficiently indicated1 there is a suggestion of movement4 ,the eye1 not being held by any balance1 readily follows this suggestion4 ,illustration3 ,fig4 #cf ,in this case we feel that the group of dots is unbalanced in character and unstable in its position or attitude4 ,it is easy1 inevitable indeed1 to imagine the group falling away to the right4 ,this is due1 no doubt1 to the visual habit of imagining a base-line when it is not drawn4 ,our judgments are constantly made with reference to the imagined standards of verticality and horizontality4 ,we seem to be provided with a plumb-line and a level without being conscious of the fact4 ,illustration3 ,fig4 #cg ,in this case there is a suggestion of falling down to the left due to the feeling of instability4 ,a symmetrical framing holding the eye at the center of equilibrium would prevent the feeling of movement1 provided the framing were sufficiently strong in its attractions4 ,in the examples ,i have given 7,fig4 #cf and ,fig4 #cg7 we have movement1 but no ,rhythm4 #ci4 ,there is another type of movement which we must consider1--the type of movement which is caused by a gradual crowding together of attractions4 ,illustration3 ,fig4 #ch ,there is nothing in this series of dots but the harmony of corresponding attractions and intervals repeated in a harmony of direction4 ,if1 instead of the repetition of equal intervals1 we had a regular progression of intervals1 either arithmetical or geometrical1 we should feel a movement in the direction of diminishing intervals4 ,illustration3 ,fig4 #ci ,in the above example the changes of interval are those of an arithmetical progression4 ,illustration3 ,fig4 #dj ,in ,fig4 #dj the changes of interval are those of a geometrical progression4 ,the movement to the left through these sequences is1 no doubt1 somewhat checked or prevented by the habit of reading to the right4 ,illustration3 ,fig4 #da ,the angle ,,fab is the angle of vision within which the sequence is observed4 ,at the end ,f of the sequence there is a greater number of attractions in a given angle of vision than at the end ,b1 so the eye is drawn towards the left4 ,the pull on the eye is greater at the end ,f because of the greater number and the crowding together of attractions4 ,in the examples just given 7,figs4 #ci1 #dj71 we have not only movements in certain directions1 but movements in regular and marked measures4 ,the movements are1 therefore1 rhythmical1 according to the definition ,i have given of ,rhythm4 #dj4 ,it is evident that any relation of positions1 balanced or unbalanced1 may be substituted for the single dots or points in the figures just given4 ,such substitutions have the following possibilities4 #da4 ,first4 ,when the points lie in a series1 at equal intervals1 the substitution of a symmetrical group of positions at each point gives no ,rhythm1 only ,harmony4 ,illustration3 ,fig4 #db ,there is no movement in this series of repetitions4 ,there is consequently no ,rhythm4 ,disregarding the habit of reading to the right1 which induces the eye to move in that direction1 it is as easy to move toward the left as toward the right4 ,it requires more than repetitions at equal intervals to produce the feeling of ,rhythm4 ,there must be movement1 and the movement must have a definite direction4 #db4 ,second4 ,the substitution at each point of a symmetrical group at equal intervals1 as before1 but with a progressive change of scale1 will give us ,rhythm4 ,the movement will be due to the gradual crowding together of attractions at one end of the series4 ,illustration3 ,fig4 #dc ,in this case we have the repetition of a symmetrical relation of positions at equal intervals with a gradation of scale in the repetitions4 ,the result is a ,rhythm1 in which the movement is from left to right1 owing to the greater crowding together of attractions at the right end of the series4 ,the feeling of ,rhythm is no doubt somewhat enhanced by our habit of reading to the right1 which facilitates the movement of the eye in that direction4 #dc4 ,third4 ,the substitution of an unstable group at each point of the sequence1 the repetitions being at equal intervals1 gives us a ,rhythm1 due simply to the movement of the group itself1 which is unstable4 ,illustration3 ,fig4 #dd ,taking the relation of positions given in ,fig4 #cf and repeating it at equal intervals1 it will be observed that the falling-to-the-right movement1 which is the result of instability1 is conveyed to the whole series of repetitions4 ,to make it perfectly clear that the movement of this ,rhythm is due to the suggestion of movement in the relation of positions which is repeated1 ,i will ask the reader to compare it with the repetition of a symmetrical group in ,fig4 #db4 ,there is no movement in that case1 therefore no ,rhythm4 #dd4 ,fourth4 ,the movement in ,fig4 #dd may be increased by a diminution of scale and consequent crowding together of the dots1 provided the movement of the groups and the crowding together have the same direction4 ,illustration3 ,fig4 #de ,in this case1 as ,i have said1 the movement of ,fig4 #dd is enforced by the presence of another element of movement1 that of a gradation of scale and consequent crowding together in the groups4 ,the two movements have the same direction4 ,the movement of the crowding is not so strong as that which is caused by the instability of the group itself4 #de4 ,fifth4 ,a symmetrical relation of positions1 being repeated in a series with gradually diminishing intervals between the repeats1 will give us a feeling of rhythmic movement4 ,it will be due to a gradual increase in the number of attractions as the eye passes from one angle of vision to another4 ,see ,fig4 #da4 ,the ,rhythm will1 no doubt1 be somewhat retarded by the sense of successive axes of symmetry4 ,illustration3 ,fig4 #df ,in this case a symmetrical group is repeated in a progression of measures4 ,the movement is toward the greater number of attractions at the right end of the series4 ,this increase in the number of attractions is due simply to diminishing intervals in that direction4 ,the eye moves through a series of angles toward the angle which contains the greatest number of attractions4 ,the reader can hardly fail to feel the successive axes of symmetry as a retarding element in this ,rhythm4 #df4 ,sixth4 ,symmetrical relations of position may be repeated in progressions of scale and of intervals4 ,in that case we get two movements1 one caused by a gradual increase in the number of attractions in successive angles of vision1 the other being due to a gradual crowding together and convergence of attractions in the same series of angles4 ,illustration3 ,fig4 #dg ,comparing this ,rhythm with the ,rhythm of ,fig4 #dc1 the reader will appreciate the force of a diminution of scale in connection with a diminution of intervals4 #dg4 ,seventh4 ,unstable groups may be repeated in progressions of intervals1 in which case the movement in the group is conveyed to the whole series1 in which there will be1 also1 the movement of a gradual increase of attractions from one angle of vision to another4 ,in all such cases contrary motion should be avoided if the object is ,rhythm4 ,the several movements should have a harmony of direction4 ,illustration3 ,fig4 #dh ,in this case the movement in the group is felt throughout the series1 and the force of the movement is enhanced by the force of a gradual increase of attractions from one visual angle to another1 in the same direction1 to the right4 ,by reversing the direction of increasing attractions and so getting the two movements into contrary motion1 the feeling of rhythm would be much diminished4 ,such contrary motions are unsatisfactory unless ,balance can be achieved4 ,in that case all sense of movement and of rhythm disappears4 #dh4 ,eighth4 ,unstable groups may be repeated1 not only in a gradation of intervals1 but in a gradation of scale1 in which case we have a combination of three causes of movement3 lack of stability in the group repeated1 a gradual increase in the number of attractions in the sequence of visual angles1 and a crowding or convergence of the attractions4 ,rhythms of this type will not be satisfactory unless the three movements have the same direction4 ,illustration3 ,fig4 #di ,here we have the repetition of an unstable group of attractions in a progression of scale and also of intervals4 ,the arrangement gives us three elements of movement1 all in the same direction4 #di4 ,two or even more of such rhythms as ,i have described may be combined in one compound rhythm1 in which the eye will follow two or more distinct movements at the same time4 ,it is important in all compound rhythms that there should be no opposition or conflict of movements1 unless of course the object is to achieve a balance of contrary movements4 ,corresponding rhythms in contrary motion balance one another4 ,if one of the movements is to the right1 the other to the left1 the balance will be symmetrical4 ,,attitudes ,,relations ,,of ,,position ,,in ,,different ,,attitudes #ej4 ,given any relation of positions 7directions1 distances1 intervals71 it may be turned upon a center and so made to take an indefinite number and variety of attitudes4 ,it may be inverted and the inversion may be turned upon a center1 producing another series of attitudes4 ,except in cases of axial balance1 the attitudes of the second series will be different from those of the first4 ,illustration3 ,fig4 #ej ,in this case the relation of positions being turned upon a center changes its attitude1 while the positions within the group remain relatively unchanged4 ,there is no change of shape4 ,illustration3 ,fig4 #ea ,in this case the same group has been inverted1 and a second series of attitudes is shown1 differing from the first series4 ,illustration3 ,fig4 #eb ,in this case1 however1 which is a case of axial balance1 the inversion of the group and the turning of the inversion on a center gives no additional attitudes4 #ea4 ,among all possible attitudes there are four which are principal or fundamental1 which we may distinguish as follows3-- ,illustration3 ,fig4 #ec ,these principal attitudes are3 ,first1 ,i1 the original attitude1 whatever it is2 second1 ,,ii1 the single inversion of that attitude1 to the right on a vertical axis2 third1 ,,iii1 the double inversion of the original attitude1 first to the right then down2 and1 fourth1 ,,iv1 the single inversion of the original position1 down across the horizontal axis4 ,,the ,,order ,,of ,,harmony ,,in ,,attitudes #eb4 ,the repetition of any relation of positions without change of attitude gives us ,harmony of ,attitudes4 ,illustration3 ,fig4 #ed ,in this case we have not only a ,harmony in the repetition of a certain relation of positions and of intervals1 but a ,harmony of ,attitudes4 ,we have1 in the relation of positions repeated1 a certain shape4 ,in the repetition of the shape we have ,shape-,harmony4 ,in the repetition of the shape in a certain attitude we have a ,harmony of ,attitudes4 ,illustration3 ,fig4 #ee ,in this case we have lost the ,harmony of ,attitudes which we had in ,fig4 #ed1 but not the ,harmony of a certain shape repeated4 #ec4 ,the possibilities of ,harmony in the repetition of any relation of positions in the same attitude has been discussed4 ,a ,harmony of ,attitudes will occur1 also1 in the repetition of any relation of attitudes4 ,illustration3 ,fig4 #ef ,here we have ,harmony in the repetition of a relation of two attitudes of a certain group of positions4 ,the combination of the two attitudes gives us another group of positions and the ,harmony lies in the repetition of this group4 ,,the ,,order ,,of ,,balance ,,in ,,attitudes #ed4 ,it is to be observed that single inversions in any direction1 for example the relation of attitudes ,i and ,,ii1 ,,ii and ,,iii1 ,,iii and ,,iv1 ,,iv and ,i1 in ,fig4 #ec1 shows an opposition and ,balance of ,attitudes upon the axis of inversion4 ,the relation of positions ,i and ,,ii and ,,iii and ,,iv1 the relation of the two groups on the left to the two groups on the right1 illustrates the idea of ,symmetry of ,attitudes1 the axis of balance being vertical4 ,by ,symmetry ,i mean1 in all cases1 right and left balance on a vertical axis4 ,all double inversions1 the relation of positions ,i and ,,iii1 and ,,ii and ,,iv1 in ,fig4 #ec1 are ,attitude-,balances1 not on axes1 but on centers4 ,the balance of these double inversions is not symmetrical in the sense in which ,i use the word symmetry1 nor is it axial4 ,it is central4 ,,the ,,order ,,of ,,rhythm ,,in ,,attitudes #ee4 ,when movement is suggested by any series of attitudes and the movement is regulated by equal or regularly progressive intervals1 we have a ,rhythm of ,attitudes4 ,illustration3 ,fig4 #eg ,in this case the changes of attitude suggest a falling movement to the right and down4 ,in the regular progression of this movement through marked intervals we have the effect of ,rhythm1 in spite of the fact that the relation of positions repeated has axial balance4 ,the intervals in this case correspond1 producing ,interval-,harmony4 ,the force of this ,rhythm might be increased if the relation of positions repeated suggested a movement in the same direction4 ,we should have ,rhythm1 of course1 in the repetition of any such unstable attitude-rhythms at equal or lawfully varying intervals4 ,,lines ,,definition ,,of ,,lines #ef4 ,taking any dot and drawing it out in any direction1 or in a series or sequence of directions1 it becomes a line4 ,the line may be drawn in any tone1 in any value1 color or color-intensity4 ,in order that the line may be seen1 the tone of it must differ from the ground-tone upon which it is drawn4 ,the line being distinctly visible1 the question of tone need not be raised at this point of our discussion4 ,we will study the line1 first1 as a line1 not as an effect of light4 ,the line may be drawn long or short1 broad or narrow4 ,as the line increases in breadth1 however1 it becomes an area4 ,we will disregard for the present all consideration of width-measures in the line and confine our attention to the possible changes of direction in it1 and to possible changes in its length4 ,we can draw the line in one direction from beginning to end1 in which case it will be straight4 ,if1 in drawing the line1 we change its direction1 we can do this abruptly1 in which case the line becomes angular1 or we can do it gradually1 in which case it becomes curved4 ,lines may be straight1 angular1 or curved4 ,they may have two of these characteristics or all three of them4 ,the shapes of lines are of infinite variety4 ,,changes ,,of ,,direction ,,in ,,lines ,angles #eg4 ,regarding the line which is drawn as a way or path upon which we move and proceed1 we must decide1 if we change our direction1 whether we will turn to the right or to the left1 and whether we will turn abruptly or gradually4 ,if we change our direction abruptly we must decide how much of a change of direction we will make4 ,is it to be a turn of #cj or #fj or #ij or #ace8 ,how much of a turn shall it be8 ,illustration3 ,fig4 #eh ,the above illustrations are easy to understand and require no explanation4 ,an abrupt change of #ahj means1 of course1 returning upon the line just drawn4 ,curves #eh4 ,in turning1 not abruptly but gradually1 changing the direction at every point1 that is to say in making a curve1 the question is1 how much of a turn to make in a given distance1 through how many degrees of the circle to turn in one inch 7#a71 in half an inch 771 in two inches 7#b74 ,in estimating the relation of arcs1 as distances1 to angles of curvature1 the angles of the arcs1 the reader will find it convenient to refer to what ,i may call an ,arc-,meter4 ,the principle of this meter is shown in the following diagram3-- ,illustration3 ,fig4 #ei ,if we wish to turn #cj in 1 we take the angle of #cj and look within it for an arc of 4 ,the arc of the right length and the right angle being found1 it can be drawn free-hand or mechanically1 by tracing or by the dividers4 ,using this meter1 we are able to draw any curve or combination of curves1 approximately2 and we are able to describe and define a line1 in its curvatures1 so accurately that it can be produced according to the definition4 ,owing1 however1 to the difficulty of measuring the length of circular arcs accurately1 we may find it simpler to define the circular arc by the length of its radius and the angle through which the radius passes when the arc is drawn4 ,illustration3 ,fig4 #fj ,here1 for example1 is a certain circular arc4 ,it is perhaps best defined and described as the arc of a half inch radius and an angle of ninety degrees1 or in writing1 more briefly1 rad4 #ij4 ,regarding every curved line either as a circular arc or made up of a series of circular arcs1 the curve may be defined and described by naming the arc or arcs of which it is composed1 in the order in which they are to be drawn1 and the attitude of the curve may be determined by starting from a certain tangent drawn in a certain direction4 ,the direction of the tangent being given1 the first arc takes the direction of the tangent1 turning to the right of it or to the left4 ,illustration3 ,fig4 #fa ,here is a curve which is composed of four circular arcs to be drawn in the following order3-- ,tangent up-right #de1 arc right radius #a #fj1 arc left radius #ij1 arc right radius #ahj4 ,two arcs will often come together at an angle4 ,the definition of the angle must be given in that case4 ,it is1 of course1 the angle made by tangents of the arcs4 ,describing the first arc and the direction 7right or left so many degrees7 which the tangent of the second arc takes from the tangent of the first arc2 then describing the second arc and stating whether it turns from its tangent to the right or to the left1 we shall be able to describe1 not only our curves1 but any angles which may occur in them4 ,illustration3 ,fig4 #fb ,here is a curve which1 so far as the arcs are concerned1 of which it is composed1 resembles the curve of ,fig4 #fa2 but in this case the third arc makes an angle with the second4 ,that angle has to be defined4 ,drawing the tangents1 it appears to be a right angle4 ,the definition of the line given in ,fig4 #fb will read as follows3-- ,tangent down right #de1 arc left radius #a #fj1 arc right radius #ij1 tangent left #ij1 arc left #ahj4 #ei4 ,in this way1 regarding all curves as circular arcs or composed of circular arcs1 we shall be able to define any line we see1 or any line which we wish to produce1 so far as changes of direction are concerned4 ,for the purposes of this discussion1 ,i shall consider all curves as composed of circular arcs4 ,there are many curves1 of course1 which are not circular in character1 nor composed1 strictly speaking1 of circular arcs4 ,the ,spirals are in no part circular4 ,elliptical curves are in no part circular4 ,all curves may1 nevertheless1 be approximately drawn as compositions of circular arcs4 ,the approximation to curves which are not circular may be easily carried beyond any power of discrimination which we have in the sense of vision4 ,the method of curve-definition1 which ,i have described1 though it may not be strictly mathematical1 will be found satisfactory for all purposes of ,pure ,design4 ,it is very important that we should be able to analyze our lines upon a single general principle2 to discover whether they are illustrations of ,order4 ,we must know whether any given line1 being orderly1 is orderly in the sense of ,harmony1 ,balance1 or ,rhythm4 ,it is equally important1 if we wish to produce an orderly as distinguished from a disorderly line1 that we should have some general principle to follow in doing it1 that we should be able to produce forms of ,harmony or ,balance or ,rhythm in a line1 if we wish to do so4 ,,differences ,,of ,,scale ,,in ,,lines #fj4 ,having drawn a line of a certain shape1 either straight or angular or curved1 or partly angular1 partly curved1 we may change the measure of the line1 in its length1 without changing its shape4 ,that is to say1 we may draw the line longer or shorter1 keeping all changes of direction1 such as they are1 in the same positions1 relatively4 ,in that way the same shape may be drawn larger or smaller4 ,that is what we mean when we speak of a change of scale or of measure which is not a change of shape4 ,,differences ,,of ,,attraction ,,in ,,lines #fa4 ,a line attracts attention in the measure of the tone-contrast which it makes with the ground-tone upon which it is drawn4 ,it attracts attention1 also1 according to its length1 which is an extension of the tone-contrast4 ,it attracts more attention the longer it is1 provided it lies1 all of it1 well within the field of vision4 ,it attracts attention also in the measure of its concentration4 ,illustration3 ,fig4 #fc ,line 8a0 would attract less attention than it does if the tone-contrast1 black on a ground of white paper1 were diminished1 if the line were gray1 not black4 ,in line 8b0 there is twice the extension of tone-contrast there is in 8a40 ,for that reason 8b0 is more attractive4 ,if1 however1 8a0 were black and 8b0 were gray1 8a0 might be more attractive than 8b10 because of the greater tone-contrast4 ,illustration3 ,fig4 #fd ,in this illustration the curved line is more attractive than the straight line because it is more concentrated1 therefore more definite4 ,the extent of tone-contrast is the same1 the lines being of the same length4 ,illustration3 ,fig4 #fe ,in this line there is no doubt as to the greater attraction of the twisted end1 on account of the greater concentration it exhibits4 ,the extent of tone-contrast is the same at both ends4 ,the force of attraction in the twisted end of the line would be diminished if the twisted end were made gray instead of black4 ,the pull of concentration at one end might1 conceivably1 be perfectly neutralized by the pull of a greater tone-contrast at the other4 ,illustration3 ,fig4 #ff ,in 8b0 we have a greater extension of tone-contrast in a given space4 ,the space becomes more attractive in consequence4 ,this might not be the case1 however1 if the greater extension of tone-contrast in one case were neutralized by an increase of tone-contrast in the other4 ,,the ,,order ,,of ,,harmony ,,in ,,lines #fb4 ,harmony of ,direction means no change of direction4 ,illustration3 ,fig4 #fg ,in this case we have a ,harmony of ,direction in the line1 because it does not change its direction4 #fc4 ,harmony of ,angles4 ,we may have ,harmony in the repetition of a certain relation of directions1 as in an angle4 ,illustration3 ,fig4 #fh ,the angle up #de and down #de is here repeated seven times4 ,illustration3 ,fig4 #fi ,in this case we have a great many angles in the line1 but they are all right angles1 so we have a ,harmony of ,angles4 ,illustration3 ,fig4 #gj ,in this case we have ,harmony in the repetition of a certain relation of angles1 that is to say1 in the repetition of a certain form of angularity4 #fd4 ,equality of lengths or measures between the angles of a line means a ,harmony of ,measures4 ,illustration3 ,fig4 #ga ,in this case1 for example1 we have no ,harmony of ,angles1 but a ,harmony of ,measures in the legs of the angles1 as they are called4 #fe4 ,we have a ,harmony of ,curvature in a line when it is composed wholly of arcs of the same radius and the same angle4 ,illustration3 ,fig4 #gb ,this is a case of ,harmony of ,curvature4 ,there is no change of direction here1 in the sequence of corresponding arcs4 ,illustration3 ,fig4 #gc ,here1 again1 we have a ,harmony of ,curvature4 ,in this case1 however1 there is a regular alternation of directions in the sequence of corresponding arcs4 ,in this regular alternation1 which is the repetition of a certain relation of directions1 there is a ,harmony of ,directions4 ,illustration3 ,fig4 #gd ,in this case the changes of direction are abrupt 7angular7 as well as gradual4 ,there is no regular alternation1 but the harmony of corresponding arcs repeated will be appreciated1 nevertheless4 #ff4 ,arcs produced by the same radius are in harmony to that extent1 having the radius in common4 ,illustration3 ,fig4 #ge ,this is an example of a harmony of arcs produced by radii of the same length4 ,the arcs vary in length4 #fg4 ,arcs of the same angle-measure produced by different radii are in ,harmony to the extent that they have an angle-measure in common4 ,illustration3 ,fig4 #gf ,this is an example4 ,arcs having the same length but varying in both radius and angle may be felt to be in ,measure-,harmony4 ,it is doubtful1 however1 whether lines of the same length but of very different curvatures will be felt to correspond4 ,if the correspondence of lengths is not felt1 visually1 it has no interest or value from the point of view of ,pure ,design4 #fh4 ,any line may be continued in a repetition or repetitions of its shape1 whatever the shape is1 producing what ,i call a ,linear ,progression4 ,in the repetitions we have ,shape-,harmony4 ,illustration3 ,fig4 #gg ,this is an example of ,linear ,progression4 ,the character of the progression is determined by the shape-motive which is repeated in it4 #fi4 ,the repetition of a certain shape-motive in a line is not1 necessarily1 a repetition in the same measure or scale4 ,a repetition of the same shape in the same measure means ,measure and ,shape-,harmony in the progression4 ,a repetition of the same shape in different measures means ,shape-,harmony without ,measure-,harmony4 ,illustration3 ,fig4 #gh ,here we have the repetition of a certain shape in a line1 in a progression of measures4 ,that gives us ,shape-,harmony and a ,harmony of ,proportions1 without ,measure-,harmony4 #gj4 ,in the repetition of a certain shape-motive in the line1 the line may change its direction abruptly or gradually1 continuously or alternately1 producing a ,linear ,progression with changes of direction4 ,illustration3 ,fig4 #gi ,in ,fig4 #gi there is a certain change of direction as we pass from one repetition to the next4 ,in the repetition of the same change of direction1 of the same angle of divergence1 we have ,harmony4 ,if the angles of divergence varied we should have no such ,harmony1 though we might have ,harmony in the repetition of a certain relation of divergences4 ,any repetition of a certain change or changes of direction in a linear progression gives a ,harmony of ,directions in the progression4 ,illustration3 ,fig4 #hj ,in this case there is a regular alternation of directions in the repeats4 ,the repeats are drawn first to the right1 then up1 and the relation of these two directions is then repeated4 #ga4 ,by inverting the motive of any progression1 in single or in double inversion1 and repeating the motive together with its inversion1 we are able to vary the character of the progression indefinitely4 ,illustration3 ,fig4 #ha ,in this case we have a single inversion of the motive and a repetition of the motive with its inversion4 ,compare this progression with the one in ,fig4 #gg1 where the same motive is repeated without inversion4 ,illustration3 ,fig4 #hb ,here we have the same motive with a double inversion1 the motive with its double inversion being repeated4 ,the inversion gives us ,shape-,harmony without ,harmony of ,attitudes4 ,we have ,harmony1 however1 in a repetition of the relation of two attitudes4 ,these double inversions are more interesting from the point of view of ,balance than of ,harmony4 ,,the ,,order ,,of ,,balance ,,in ,,lines #gb4 ,we have ,balance in a line when one half of it is the single or double inversion of the other half2 that is1 when there is an equal opposition and consequent equilibrium of attractions in the line4 ,when the axis of the inversion is vertical the balance is symmetrical4 ,illustration3 ,fig4 #hc ,there is ,balance in this line because half of it is the single inversion of the other half4 ,the balance is symmetrical because the axis is vertical4 ,the balance1 although symmetrical1 is not likely to be appreciated1 however1 because the eye is sure to move along a line upon which there is no better reason for not moving than is found in slight terminal contrasts4 ,the eye is not held at the center when there is nothing to hold the eye on the center4 ,mark the center in any way and the eye will go to it at once4 ,a mark or accent may be put at the center1 or accents1 corresponding and equal1 may be put at equal distances from the center in opposite directions4 ,the eye will then be held at the center by the force of equal and opposite attractions4 ,illustration3 ,fig4 #hd ,in this case the eye is held at the balance-center of the line by a change of character at that point4 ,illustration3 ,fig4 #he ,in this case the changes of character are at equal distances1 in opposite directions1 from the center4 ,the center is marked by a break4 ,the axis being vertical1 the balance is a symmetrical one4 #gc4 ,the appreciation of ,balance in a line depends very much upon the attitude in which it is drawn4 ,illustration3 ,fig4 #hf ,in this case the balance in the line itself is just as good as it is in ,fig4 #he2 but the axis of the balance being diagonal1 the balance is less distinctly felt4 ,the balance is unsatisfactory because the attitude of the line is one which suggests a falling down to the left4 ,it is the instability of the line which is felt1 more than the balance in it4 ,illustration3 ,fig4 #hg ,in this case of double inversion1 also1 we have balance4 ,the balance is more distinctly felt than it was in ,fig4 #hf4 ,the attitude is one of stability4 ,this balance is neither axial nor symmetrical1 but central4 #gd4 ,a line balances1 in a sense1 when its inclinations are balanced4 ,illustration3 ,fig4 #hh ,this line may be said to be in balance1 as it has no inclinations1 either to the right or to the left1 to suggest instability4 ,the verticals and the horizontals1 being stable1 look after themselves perfectly well4 ,illustration3 ,fig4 #hi ,this line has two unbalanced inclinations to the left4 ,it is1 therefore1 less satisfactory than the line in ,fig4 #hh1 from the point of view of ,balance4 ,illustration3 ,fig4 #ij ,the two inclinations in this line counteract one another4 ,one inclination toward the left is balanced by a corresponding inclination toward the right4 ,illustration3 ,fig4 #ia ,in this case1 also1 there is no inclination toward the left which is not balanced by a corresponding inclination toward the right4 ,illustration3 ,fig4 #ib ,in this line1 which is composed wholly of inclinations to the right or left1 every inclination is balanced1 and the line is1 therefore1 orderly in the sense of ,balance2 more so1 certainly1 than it would be if the inclinations were not counteracted4 ,this is the problem of balancing the directions or inclinations of a line4 #ge4 ,a line having no balance or symmetry in itself may become balanced4 ,the line may be regarded as if it were a series of dots close together4 ,the line is then a relation of positions indicated by dots4 ,it is a composition of attractions corresponding and equal4 ,it is only necessary1 then1 to find what ,i have called the center of equilibrium1 the balance-center of the attractions1 and to indicate that center by a symmetrical inclosure4 ,the line will then become balanced4 ,illustration3 ,fig4 #ic ,here is a line4 ,to find the center of its attractions it may be considered as if it were a line of dots1 like this3-- ,illustration3 ,fig4 #id ,the principle according to which we find the balance-center is stated on page #bc4 ,the balance-center being found1 it must be indicated unmistakably4 ,this may be done by means of any symmetrical inclosure which will draw the eye to the center and hold it there4 ,illustration3 ,fig4 #ie ,in this case the balance-center is indicated by a rectangular inclosure4 ,this rectangle is not1 however1 in harmony of character with the line inclosed by it1 which is curved4 ,illustration3 ,fig4 #if ,in this case the balance-center is indicated by a circle1 which1 being a curve1 is in harmony of character with the inclosed line1 which is also a curve4 ,i shall call this ,occult ,balance to distinguish it from the unmistakable ,balance of ,symmetry and other comparatively obvious forms of ,balance1 including the balance of double inversions4 ,as ,i have said1 on page #bd1 the symmetrical framing must be sufficiently attractive to hold the eye steadily at the center1 otherwise it does not serve its purpose4 ,,the ,,order ,,of ,,rhythm ,,in ,,lines #gf4 ,the eye1 not being held on a vertical axis or on a balance-center1 readily follows any suggestion of movement4 ,illustration3 ,fig4 #ig ,in this case there is no intimation of any vertical axis or balance-center4 ,the figure is consequently unstable4 ,there is a sense of movement to the right4 ,this is due1 not only to the inclinations to the right1 but to the convergences in that direction4 ,illustration3 ,fig4 #ih ,in this case the movement is unmistakably to the left4 ,in such cases we have movement1 but no ,rhythm4 #gg4 ,rhythm requires1 not only movement1 but the order of regular and marked intervals4 ,illustration3 ,fig4 #ii ,in ,fig4 #ii we have a line1 a linear progression1 which gives us the feeling of movement1 unmistakably4 ,the movement1 which in the motive itself is not rhythmical1 becomes rhythmical in its repetition at regular1 and in this case equal1 intervals4 ,the intervals are marked by the repetitions4 #gh4 ,it is a question of some interest to decide how many repetitions are required in a ,rhythm4 ,in answer to this question ,i should say three as a rule4 ,a single repetition shows us only one interval1 and we do not know whether the succeeding intervals are to be equal or progressive1 arithmetically progressive or geometrically progressive4 ,the rhythm is not defined until this question is decided1 as it will be by two more repetitions4 ,the measures of the rhythm might take the form of a repeated relation of measures2 a repetition1 for example1 of the measures two1 seven1 four4 ,in that case the relation of the three measures would have to be repeated at least three times before the character of the rhythm could be appreciated4 #gi4 ,any contrariety of movement in the motive is extended1 of course1 to its repetitions4 ,illustration3 ,fig4 #ajj ,in this case1 for example1 there are convergences and1 consequently1 movements both up and down4 ,this contrariety of movements is felt through the whole series of repetitions4 ,other things being equal1 ,i believe the eye moves up more readily than down1 so that convergences downward have less effect upon us than corresponding convergences upward4 ,illustration3 ,fig4 #aja ,in this case1 by omitting the long vertical line ,i have diminished the amount of convergence downward4 ,in that way ,i have given predominance to the upward movement4 ,instead of altogether omitting the long vertical line1 ,i might have changed its tone from black to gray4 ,that would cause an approximate instead of complete disappearance4 ,it should be remembered that in all these cases the habit of reading comes in to facilitate the movements to the right4 ,it is easier for the eye to move to the right than in any other direction1 other things being equal4 ,the movement back to the beginning of another line1 which is of course inevitable in reading1 produces comparatively little impression upon us1 no more than the turning of the page4 ,the habit of reading to the right happens to be our habit4 ,the habit is not universal4 #hj4 ,reading repetitions and alternations to the right1 always1 ,i1 for a long time1 regarded such repetitions and alternations as rhythmical1 until ,professor ,mowll raised the question whether it is necessary to read all alternations to the right when there is nothing in the alternations themselves to suggest a movement in one direction rather than another4 ,why not read them to the left as well as to the right8 ,we at once decided that the movement in a ,rhythm must be determined by the character of the ,rhythm itself1 not by any habit of reading1 or any other habit1 on our part4 ,it was in that way that we came to regard repetitions and alternations as illustrations of ,harmony rather than of ,rhythm4 ,rhythm comes into the ,harmony of a ,repeated ,relation when the relation is one which causes the eye to move in one direction rather than another1 and when the movement is carried on from repetition to repetition1 from measure to measure4 #ha4 ,the repetition of a motive at equal intervals1 when there is no movement in the motive1 gives us no feeling of ,rhythm4 ,illustration3 ,fig4 #ajb ,in this case1 for example1 we have a repetition in the line of a certain symmetrical shape4 ,as there is no movement in the shape repeated1 there is no ,rhythm in the repetition4 ,there is nothing to draw the eye in one direction rather than another4 ,the attractions at one end of the line correspond with the attractions at the other4 #hb4 ,the feeling of ,rhythm may be induced by a regular diminution of measure or scale in the repetitions of the motive and in the intervals in which the repetitions take place4 ,illustration3 ,fig4 #ajc ,in this case the shape repeated is still symmetrical1 but it is repeated with a gradual diminution of scale and of intervals1 by which we are given a feeling of rhythmic movement4 ,the change of scale and of intervals1 to induce a sense of rhythmic motion1 must be regular4 ,to be regular the change must be in the terms of one or the other of the regular progressions2 the arithmetical progression1 which proceeds by a certain addition1 or the geometrical1 which proceeds by a certain multiplication4 ,the question may arise in this case 7,fig4 #ajc7 whether the movement of the ,rhythm is to the right or to the left4 ,i feel1 myself1 that the movement is to the right4 ,in diminishing the scale of the motive and of the intervals we have1 hardly at all1 diminished the extent of the tone-contrast in a given angle of vision4 ,see ,fig4 #da1 p4 #bg1 showing the increase of attractions from one visual angle to another4 ,at the same time we come at the right end of the progression to two or more repetitions in the space of one4 ,we have1 therefore1 established the attraction of a crowding together at the right end of the series4 ,see the passage 7p4 #dc7 on the attractiveness of a line4 ,the force of the crowding together of attractions is1 ,i feel1 sufficient to cause a movement to the right4 ,it must be remembered1 however1 that the greater facility of reading to the right is added here to the pull of a greater crowding together of attractions in the same direction1 so the movement of the ,rhythm in that direction may not be very strong after all4 ,if the direction of any ,rhythm is doubtful1 the ,rhythm itself is doubtful4 #hc4 ,the feeling of ,rhythm may be induced1 as ,i have said1 by a gradual increase of the number of attractions from measure to measure1 an increase of the extent of tone-contrast4 ,illustration3 ,fig4 #ajd ,increasing the extent of tone-contrast and the number of attractions in the measures of the ,rhythm in ,fig4 #ajc1 we are able to force the eye to follow the series in the direction contrary to the habit of reading1 that is to say from right to left4 ,a decrease in the forces of attraction in connection with a decrease of scale is familiar to us all in the phenomena of perspective4 ,the gradual disappearance of objects in aerial perspective does away with the attraction of a greater crowding together of objects in the distance4 ,illustration3 ,fig4 #aje ,in this case the diminution of scale has been given up and there is no longer any crowding together4 ,there is no chance of this rhythm being read from left to right except by an effort of the will4 ,the increase of attractions toward the left is much more than sufficient to counteract the habit of reading4 #hd4 ,the force of a gradual coming together of attractions1 inducing movement in the direction of such coming together1 is noticeable in spiral shapes4 ,illustration3 ,fig4 #ajf ,in this case we have a series of straight lines with a constant and equal change of direction to the right1 combined with a regular diminution of measures in the length of the lines1 this in the terms of an arithmetical progression4 ,the movement is in the direction of concentration and it is distinctly marked in its measures4 ,the movement is therefore rhythmical4 ,illustration3 ,fig4 #ajg ,in this case we have a series of straight lines with a constant change of direction to the right2 but in this case the changes of measure in the lines are in the terms of a geometrical progression4 ,the direction is the same1 the pull of concentration perhaps stronger4 ,illustration3 ,fig4 #ajh ,in this ,rhythm there is an arithmetical gradation of measures in the changes of direction1 both in the length of the legs and in the measure of the angles4 ,the pull of concentration is1 in this case1 very much increased4 ,it is evident that the legs may vary arithmetically and the angles geometrically2 or the angles arithmetically and the legs geometrically4 #he4 ,if1 in the place of the straight lines1 which form the legs1 in any of the examples given1 are substituted lines which in themselves induce movement1 the feeling of ,rhythm may be still further increased1 provided the directions of movement are consistent4 ,illustration3 ,fig4 #aji ,in this case the movement is in the direction of increasing concentration and in the direction of the convergences4 ,if the movement of the convergences be contrary to the movement of concentration1 there will be in the figure a contrary motion which may diminish or even entirely prevent the feeling of ,rhythm4 ,if the movement in one direction or the other predominates1 we may still get the feeling of ,rhythm1 in spite of the drawback of the other and contrary movement4 ,illustration3 ,fig4 #aaj ,in this case the linear convergences substituted for the straight lines are contrary to the direction of increasing concentration4 ,the movement is doubtful4 #hf4 ,corresponding rhythms1 set in contrary motion1 give us the feeling of ,balance rather than of ,rhythm4 ,the balance in such cases is a balance of movements4 ,illustration3 ,fig4 #aaa ,this is an example of corresponding and opposed rhythms producing the feeling1 not of ,rhythm1 but of ,balance4 ,,attitudes ,,lines ,,in ,,different ,,attitudes #hg4 ,any line or linear progression may be turned upon a center1 and so made to take an indefinite number and variety of attitudes4 ,it may be inverted upon an axis1 and the inversion may be turned upon a center producing another series of attitudes which1 except in the case of axial symmetry in the line1 will be different from those of the first series4 ,illustration3 ,fig4 #aab ,in this case the line changes its attitude4 ,illustration3 ,fig4 #aac ,in this case ,i have inverted the line1 and turning the inversion upon a center ,i get a different set of attitudes4 ,illustration3 ,fig4 #aad ,in this case1 which is a case of axial symmetry in the line1 the inversion gives us no additional attitudes4 ,,the ,,order ,,of ,,harmony ,,in ,,the ,,attitudes ,,of ,,lines #hh4 ,when any line or linear progression is repeated1 without change of attitude1 we have a ,harmony of ,attitudes4 ,illustration3 ,fig4 #aae ,this is an illustration of ,harmony of ,attitudes4 ,it is also an illustration of ,interval-,harmony4 #hi4 ,we have a ,harmony of ,attitudes1 also1 in the repetition of any relation of two or more attitudes1 the relation of attitudes being repeated without change of attitude4 ,illustration3 ,fig4 #aaf ,we have here a ,harmony of ,attitudes due to the repetition of a certain relation of attitudes1 without change of attitude4 ,,the ,,order ,,of ,,balance ,,in ,,the ,,attitudes ,,of ,,lines #ij4 ,when a line or linear progression is inverted upon any axis or center1 and we see the original line and its inversion side by side1 we have a ,balance of ,attitudes4 ,illustration3 ,fig4 #aag ,the relation of attitudes ,i1 ,,ii1 of ,,iii1 ,,iv1 and of ,i1 ,,ii1 ,,iii1 ,,iv1 is that of ,symmetrical ,balance on a vertical axis4 ,the relation of attitudes ,i1 ,,iv1 and of ,,ii1 ,,iii1 is a relation of ,balance but not of ,symmetrical ,balance4 ,this is true1 also1 of the relation of ,i1 ,,iii and of ,,ii1 ,,iv4 ,double inversions are never symmetrical1 but they are illustrations of ,balance4 ,the balance of double inversions is central1 not axial4 ,these statements are all repetitions of statements previously made about positions4 ,,the ,,order ,,of ,,rhythm ,,in ,,the ,,attitudes ,,of ,,lines #ia4 ,it often happens that a line repeated in different attitudes gives us the sense of movement4 ,it does this when the grouping of the repetitions suggests instability4 ,the movement is rhythmical when it exhibits a regularity of changes in the attitudes and in the intervals of the changes4 ,illustration3 ,fig4 #aah ,in this case we have a movement to the right1 but no ,rhythm1 the intervals being irregular4 ,illustration3 ,fig4 #aai ,in this case the changes of attitude and the intervals of the changes being regular1 the movement becomes rhythmical4 ,the direction of the rhythm is clearly down-to-the-right4 #ib4 ,in the repetition of any line we have a ,harmony1 due to the repetition4 ,if the line is repeated in the same attitude1 we have a ,harmony of ,attitudes4 ,if it is repeated in the same intervals1 we have a ,harmony of ,intervals4 ,we have ,harmony1 also1 in the repetition of any relation of attitudes or of intervals4 ,we have not yet considered the arrangement or composition of two or more lines of different measures and of different shapes4 ,,the ,,composition ,,of ,,lines #ic4 ,by the ,composition of ,lines ,i mean putting two or more lines together1 in juxtaposition1 in contact or interlacing4 ,our object in the composition of lines1 so far as ,pure ,design is concerned1 is to achieve ,order1 if possible ,beauty1 in the several modes of ,harmony1 ,balance1 and ,rhythm4 ,,harmony ,,in ,,the ,,composition ,,of ,,lines #id4 ,we have ,harmony in line-compositions when the lines which are put together correspond in all respects or in some respects1 when they correspond in attitudes1 and when there is a correspondence of distances or intervals4 ,illustration3 ,fig4 #abj ,in this case the lines of the composition correspond in tone1 measure1 and shape1 but not in attitude2 and there is no correspondence in distances or intervals4 ,illustration3 ,fig4 #aba ,in this case the attitudes correspond1 as they did not in ,fig4 #abj4 ,there is still no correspondence of intervals4 ,illustration3 ,fig4 #abb ,here we have the correspondence of intervals which we did not have either in ,fig4 #abj or in ,fig4 #aba4 ,there is not only a ,harmony of ,attitudes and of ,intervals1 in this case1 but the ,harmony of a repetition in one direction1 ,direction-,harmony4 ,in all these cases we have the repetition of a certain angle1 a right angle1 and of a certain measure-relation between the legs of the angle1 giving ,measure and ,shape-,harmony4 #ie4 ,the repetition in any composition of a certain relation of measures1 or of a certain proportion of measures1 gives ,measure-,harmony to the composition4 ,the repetition of the relation one to three in the legs of the angle1 in the illustrations just given1 gives to the compositions the ,harmony of a ,recurring ,ratio4 ,by a proportion ,i mean an equality between ratios1 when they are numerically different4 ,the relation of one to three is a ratio4 ,the relation of one to three and three to nine is a proportion4 ,we may have in any composition the ,harmony of a ,repeated ,ratio1 as in ,figs4 #abj1 #aba1 #abb1 or we may have a ,harmony of ,proportions1 as in the composition which follows4 ,illustration3 ,fig4 #abc #if4 ,to be in ,harmony lines are not necessarily similar in all respects4 ,as ,i have just shown1 lines may be in ,shape-,harmony1 without being in any ,measure-,harmony4 ,lines are approximately in harmony when they correspond in certain particulars1 though they differ in others4 ,the more points of resemblance between them1 the greater the harmony4 ,when they correspond in all respects we have1 of course1 a perfect harmony4 ,illustration3 ,fig4 #abd ,this is a case of ,shape-,harmony without ,measure-,harmony and without ,harmony of ,attitudes4 ,illustration3 ,fig4 #abe ,in this case we have a ,harmony of ,shapes and of ,attitudes1 without ,measure-,harmony or ,harmony of ,intervals4 ,this is a good illustration of a ,harmony of ,proportions4 ,straight lines are in ,harmony of ,straightness because they are all straight1 however much they differ in tone or measure4 ,they are in ,harmony of ,measure when they have the same measure of length4 ,the measures of width1 also1 may agree or disagree4 ,in every agreement we have ,harmony4 ,angular lines are in ,harmony when they have one or more angles in common4 ,the recurrence of a certain angle in different parts of a composition brings ,harmony into the composition4 ,designers are very apt to use different angles when there is no good reason for doing so1 when the repetition of one would be more orderly4 ,illustration3 ,fig4 #abf ,the four lines in this composition have right angles in common4 ,to that extent the lines are in ,harmony4 ,there is also a ,harmony in the correspondence of tones and of width-measures in the lines4 ,considerable ,harmony of ,attitudes occurs in the form of parallelisms4 ,illustration3 ,fig4 #abg ,these two lines have simply one angle in common1 a right angle1 and the angle has the same attitude in both cases4 ,they differ in other respects4 ,illustration3 ,fig4 #abh ,in these three lines the only element making for ,harmony1 except the same tone and the same width1 is found in the presence in each line of a certain small arc of a circle4 ,straightness occurs in two of the lines but not in the third4 ,there is a ,harmony1 therefore1 between two of the lines from which the third is excluded4 ,there is1 also1 a ,harmony of ,attitude in these two lines1 in certain parallelisms4 ,,balance ,,in ,,the ,,composition ,,of ,,lines #ig4 ,lines balance when in opposite attitudes4 ,we get ,balance in all inversions1 whether single or double4 ,illustration3 ,fig4 #abi ,here similar lines are drawn in opposite attitudes and we get ,measure and ,shape-,balance4 ,in the above case the axis of balance is vertical4 ,the balance is1 therefore1 symmetrical4 ,symmetrical ,balance is obtained by the single inversion of any line or lines on a vertical axis4 ,double inversion gives a ,balance of ,measures and ,shapes on a center4 ,we have no ,symmetry in double inversions4 ,all this has been explained4 ,illustration3 ,fig4 #acj ,we have ,measure and ,shape-,balance on a center in this case4 ,it is a case of double inversion4 ,it is interesting to turn these double inversions on their centers1 and to observe the very different effects they produce in different attitudes4 #ih4 ,shapes in order to balance satisfactorily must be drawn in the same measure1 as in ,fig4 #aca which follows4 ,illustration3 ,fig4 #aca ,illustration3 ,fig4 #acb ,here1 in ,fig4 #acb1 we have ,shape-,harmony without ,measure-,harmony4 ,it might be argued that we have in this case an illustration of ,shape-,balance without ,measure-,balance4 ,theoretically that is so1 but ,shape-,balance without ,measure-,balance is never satisfactory4 ,if we want the lines in ,fig4 #acb to balance we must find the balance-center between them1 and then indicate that center by a symmetrical inclosure4 ,we shall then have a ,measure-,balance 7occult7 without ,shape-,balance4 #ii4 ,when measures correspond but shapes differ the balance-center may be suggested by a symmetrical inclosure or framing4 ,when that is done the measures become balanced4 ,illustration3 ,fig4 #acc ,here we have ,measure-,harmony and a ,measure-,balance without ,shape-,harmony or ,shape-,balance4 ,the two lines have different shapes but the same measures1 lengths and widths corresponding4 ,the balance-center is found for each line4 ,see pp4 #ed1 #ee4 ,between the two centers is found the center1 upon which the two lines will balance4 ,this center is then suggested by a symmetrical inclosure4 ,the balancing measures in such cases may1 of course1 be turned upon their centers1 and the axis connecting their centers may be turned in any direction or attitude1 with no loss of equilibrium1 so far as the measures are concerned4 ,illustration3 ,fig4 #acd ,the ,balance of ,measures here is just as good as it is in ,fig4 #acc4 ,the attitudes are changed but not the relation of the three balance-centers4 ,the change of shape in the inclosure makes no difference4 #ajj4 ,measure-,balance without ,shape-,harmony or ,shape-,balance is satisfactory only when the balance-center is unmistakably indicated or suggested1 as in the examples which ,i have given4 #aja4 ,there is another form of ,balance which is to be inferred from what ,i have said1 on page #ah1 of the ,balance of ,directions1 but it needs to be particularly considered and more fully illustrated4 ,i mean a ,balance in which directions or inclinations to the right are counteracted by corresponding or equivalent directions or inclinations to the left4 ,the idea in its simplest and most obvious form is illustrated in ,fig4 #bb1 on page #ah4 ,in that case the lines of inclination correspond4 ,they do not necessarily correspond except in the extent of contrast1 which may be distributed in various ways4 ,illustration3 ,fig4 #ace ,the balance of inclinations in this case is just as good as the balance in ,fig4 #bb4 ,there is no symmetry as in ,fig4 #bb4 ,three lines balance against one4 ,the three lines1 however1 show the same extent of contrast as the one4 ,so far as the inclinations are concerned they will balance in any arrangement which lies well within the field of vision4 ,the eye must be able to appreciate the fact that a disposition to fall to the right is counteracted by a corresponding or equivalent disposition to fall to the left4 ,illustration3 ,fig4 #acf ,this arrangement of the inclining lines is just as good as the arrangement in ,fig4 #ace4 ,the inclinations may be distributed in any way1 provided they counteract one another properly4 ,illustration3 ,fig4 #acg ,in this case ,i have again changed the composition1 and having suggested the balance-center of the lines1 as attractions1 by a symmetrical inclosure1 ,i have added ,measure-,balance 7occult7 to ,inclination-,balance4 ,the ,order in ,fig4 #acg is greater than the ,order in ,figs4 #ace and #acf4 ,in ,fig4 #acg two forms of ,balance are illustrated1 in the other cases only one4 ,the value of any composition lies in the number of orderly connections which it shows4 ,illustration3 ,fig4 #ach ,in this case ,i have taken a long angular line and added a sufficient number and extent of opposite inclinations to make a balance of inclinations4 ,the horizontal part of the long line is stable1 so it needs no counteraction1 but the other parts incline in various degrees1 to the left or to the right4 ,each inclining part requires1 therefore1 either a corresponding line in a balancing direction1 or two or more lines of equivalent extension in that direction4 ,in one case ,i have set three lines to balance one1 but they equal the one in length1 that is to say1 in the extent of contrast4 ,we have in ,fig4 #ach an illustration of occult ,measure-,balance and the ,balance of ,inclinations4 ,i have illustrated the idea of ,inclination-,balance by very simple examples4 ,i have not considered the inclinations of curves1 nor have ,i gone1 at all1 into the more difficult problem of balancing averages of inclination1 when the average of two or more different inclinations of different extents of contrast has to be counteracted4 ,in ,tone-,relations the inclinations are of tone-contrasts1 and a short inclination with a strong contrast may balance a long inclination with a slight one1 or several inclinations of slight contrasts may serve to balance one of a strong contrast4 ,the force of any inclining line may be increased by increasing the tone-contrast with the ground-tone4 ,in tone-relations the problem becomes complicated and difficult4 ,the whole subject of ,inclination-,balance is one of great interest and worthy of a separate treatise4 ,,rhythm ,,in ,,the ,,composition ,,of ,,lines #ajb4 ,we will first consider the ,measure-,rhythms which result from a gradual increase of scale1 an increase in the extent of the contrasts4 ,the intervals must1 in such ,rhythms1 be regular and marked4 ,they may be equal2 they may alternate1 or they may be regularly progressive4 ,illustration3 ,fig4 #aci ,in this case ,i feel that the direction of the ,rhythm is up-to-the-right owing to the gradual increase of length and consequently of the extent of contrast in the lines1 in that direction4 ,illustration3 ,fig4 #adj ,in this case ,i have1 by means of regularly diminishing intervals1 added the force of a crowding together of contrasting edges to the force of a gradual extension of them4 ,the movement is still more strongly up-to-the-right4 ,illustration3 ,fig4 #ada ,in this case a greater extension of contrasts pulls one way and a greater crowding of contrasts the other4 ,i think that crowding has the best of it4 ,the movement1 though much retarded1 is1 ,i feel1 down-to-the-left rather than up-to-the-right1 in spite of the fact that the greater facility of reading to the right is added to the force of extended contrasts4 #ajc4 ,substituting unstable for stable attitudes in the examples just given1 we are able to add the movement suggested by instability of attitude to the movement caused by a gradual extension of contrasts4 ,illustration3 ,fig4 #adb ,the movement up-to-the-right in ,fig4 #aci is here connected with an inclination of all the lines down-to-the-right4 ,illustration3 ,fig4 #adc ,here the falling of the lines down-to-the-left counteracts the movement in the opposite direction which is caused by the extension of contrasting edges in that direction4 ,a crowding together of the lines1 due to the diminution of intervals toward the left1 adds force to the movement in that direction4 ,illustration3 ,fig4 #add ,in this case a movement up is caused by convergences1 a movement down by crowding4 ,the convergences are all up1 the crowding down4 ,i think that the convergences have it4 ,i think the movement is1 on the whole1 up4 ,the intervals of the crowding down diminish arithmetically4 ,illustration3 ,fig4 #ade ,the convergences and the crowding of attractions are1 here1 both up-to-the-right4 ,the ,rhythm is much stronger than it was in ,fig4 #add4 ,the intervals are those of an arithmetical progression4 ,illustration3 ,fig4 #adf ,the movement here is up-to-the-right1 because of convergences in that direction and an extension of contrasts in that direction4 ,illustration3 ,fig4 #adg ,in this case the two movements part company4 ,one leads the eye up-to-the-left1 the other leads it up-to-the-right4 ,the movement as a whole is approximately up4 ,as the direction of the intervals is horizontal1 not vertical1 this is a case of movement without ,rhythm4 ,the movement will become rhythmic only in a vertical repetition4 ,that is to say1 the direction or directions of the movement in any ,rhythm and the direction or directions of its repetitions must coincide4 ,in ,fig4 #aci1 the movement is up-to-the-right1 and the intervals may be taken in the same direction1 but in ,fig4 #adg the movement is up4 ,the intervals cannot be taken in that direction4 ,it is1 therefore1 impossible to get any feeling of ,rhythm from the composition4 ,we shall get the feeling of ,rhythm only when we repeat the movement in the direction of the movement1 which is up4 ,illustration3 ,fig4 #adh ,here we have a vertical repetition of the composition given in ,fig4 #adg4 ,the result is an upward movement in regular and marked intervals1 answering to our understanding of ,rhythm4 ,illustration3 ,fig4 #adi ,in this case we have a curved movement4 ,the lines being spaced at regular intervals1 the movement is in regular and marked measures4 ,its direction is due to an increase in the number of attractions1 to crowding1 and to convergences4 ,the movement is1 accordingly1 rhythmical4 ,illustration3 ,fig4 #aej ,the movement of ,fig4 #adi is here partly destroyed by an inversion and opposition of attitudes and directions4 ,the movement is1 on the whole1 up1 but it can hardly be described as rhythmical1 because it has no repetition upwards1 as it has in the next illustration1 ,fig4 #aea4 ,before proceeding1 however1 to the consideration of ,fig4 #aea1 ,i want to call the attention of the reader to the fact that we have in ,fig4 #aej a type of ,balance to which ,i have not particularly referred4 ,it is a case of unsymmetrical balance on a vertical axis4 ,the balancing shapes and movements correspond4 ,they incline in opposite directions4 ,they diverge equally from the vertical axis4 ,the inclinations balance4 ,at the same time the composition does not answer to our understanding of ,symmetry4 ,it is not a case of right and left balance on the vertical axis4 ,the shapes and movements are not right and left and opposite4 ,one of the shapes is set higher than the other4 ,the balance is on the vertical4 ,it is obvious1 but it is not symmetrical4 ,it is a form of ,balance which has many and very interesting possibilities4 ,illustration3 ,fig4 #aea ,the repetition1 in this case1 of somewhat contrary movements1 a repetition at equal intervals on a vertical axis1 gives us more ,balance than ,rhythm4 ,we feel1 however1 a general upward movement through the repetitions and1 as this movement is regular1 it must be described as rhythmical4 ,the feeling of upward movement in ,fig4 #aea is1 no doubt1 partly due to the suggestion of upward growth in certain forms of vegetation4 ,the suggestion is inevitable4 ,so far as the movement is caused by this association of ideas it is a matter1 not of sensation1 but of perception4 ,the consideration of such associations of ideas does not belong1 properly1 to ,pure ,design1 where we are dealing with sense-impressions1 exclusively4 #ajd4 ,rhythm is not inconsistent with ,balance4 ,it is only necessary to get movements which have the same or nearly the same direction and which are rhythmical in character to balance on the same axis and we have a reconciliation of the two principles4 ,illustration3 ,fig4 #aeb ,here we have a ,rhythm1 of somewhat contrary movements1 with ,balance1--,balance on a diagonal axis4 ,the ,balance is not satisfactory4 ,the ,balance of ,inclinations is felt more than the ,balance of ,shapes4 ,illustration3 ,fig4 #aec ,in this case we have the combination of a ,rhythm of somewhat contrary1 but on the whole upward1 movements with ,symmetry4 ,if the diverging movements of ,fig4 #aec should be made still more diverging1 so that they become approximately contrary and opposite1 the feeling of a general upward movement will disappear4 ,the three movements to the right will balance the three movements to the left1 and we shall have an illustration of ,symmetrical ,balance1 with no ,rhythm in the composition as a whole4 ,it is doubtful whether the balance of contrary and opposite movements is satisfactory4 ,our eyes are drawn in opposite directions1 away from the axis of balance1 instead of being drawn toward it4 ,our appreciation of the balance must1 therefore1 be diminished4 ,contrary and opposite movements neutralize one another1 so we have neither rest nor movement in the balance of contrary motions4 ,by bringing the divergences of movement together1 gradually1 we shall be able to increase1 considerably1 the upward movement shown in ,fig4 #aec4 ,at the same time1 the suggestion of an upward growth of vegetation becomes stronger4 ,the increase of movement will be partly explained by this association of ideas4 ,illustration3 ,fig4 #aed ,here all the movements are pulled together into one direction4 ,the ,rhythm is easier and more rapid4 ,the ,balance is just as good4 ,the movement in this case is no doubt facilitated by the suggestion of upward growth4 ,it is impossible to estimate the force which is added by such suggestions and associations4 ,illustration3 ,fig4 #aee ,here the movements come together in another way4 ,the number and variety of these illustrations might1 of course1 be indefinitely increased4 ,those which ,i have given will1 ,i think1 serve to define the principal modes of line-composition1 when the lines are such as we choose to draw4 ,,the ,,composition ,,of ,,various ,,lines #aje4 ,in most of the examples ,i have given ,i have used repetitions of the same line or similar lines4 ,when the lines which are put together are not in harmony1 when they are drawn1 as they may be1 without any regard to the exigencies of orderly composition1 the problem becomes one of doing the best we can with our terms4 ,we try for the greatest possible number of orderly connections1 connections making for ,harmony1 ,balance1 and ,rhythm4 ,we arrange the lines1 so far as possible1 in the same directions1 giving them similar attitudes1 getting1 in details1 as much ,harmony of ,direction and of ,attitudes as possible1 and establishing as much ,harmony of ,intervals as possible between the lines4 ,by spacing and placing we try to get differences of character as far as possible into regular alternations or gradations in which there will be a suggestion either of ,harmony or of ,rhythm4 ,a suggestion of ,symmetry is sometimes possible4 ,occult ,balance is possible in all cases1 as it depends1 not upon the terms balanced1 but upon the indication of a center of attractions by a symmetrical framing of them4 ,let us take seven lines1 with a variety of shape-character1 with as little ,shape-,harmony as possible1 and let us try to put these lines together in an orderly way4 ,illustration3 ,fig4 #aef ,with these lines1 which show little or no harmony of character1 which agree only in tone and in width-measure1 lines which would not be selected certainly as suitable material for orderly compositions1 ,i will make three compositions1 getting as much ,order into each one as ,i can1 just to illustrate what ,i mean4 ,i shall not be able to achieve a great deal of ,order1 but enough1 probably1 to satisfy the reader that the effort has been worth while4 ,illustration3 ,fig4 #aeg ,in this case ,i have achieved the suggestion of a ,symmetrical ,balance on a vertical axis with some ,harmony of ,directions and of ,attitudes and some ,interval-,harmony4 ,illustration3 ,fig4 #aeh ,in this case1 also1 ,i have achieved a suggestion of ,order1 if not ,order itself4 ,consider the comparative disorder in ,fig4 #aef1 where no arrangement has been attempted4 ,illustration3 ,fig4 #aei ,here is another arrangement of the same terms4 ,fortunately1 in all of these cases1 the lines agree in tone and in width-measure4 ,that means considerable order to begin with4 ,this problem of taking any terms and making the best possible arrangement of them is a most interesting problem1 and the ability to solve it has a practical value4 ,we have the problem to solve in every-day life2 when we have to arrange1 as well as we can1 in the best possible order1 all the useful and indispensable articles we have in our houses4 ,to achieve a consistency and unity of effect with a great number and variety of objects is never easy4 ,it is often very difficult4 ,it is particularly difficult when we have no two objects alike1 no correspondence1 no likeness1 to make ,harmony4 ,with the possibility of repetitions and inversions the problem becomes comparatively easy4 ,with repetitions and inversions we have the possibility1 not only of ,harmony1 but of ,balance and ,rhythm4 ,with inversions we have the possibility1 not only of ,balance1 but of ,symmetrical ,balance1 and when we have that we are not at all likely to think whether the terms of which the symmetry is composed are in harmony or not4 ,we feel the ,order of ,symmetry and we are satisfied4 ,illustration3 ,fig4 #afj ,in this design ,i repeat an inversion of the arrangement in ,fig4 #aeh4 ,the result is a symmetry1 and no one is likely to ask whether the elements of which it is composed are harmonious or not4 ,by inversions1 single and double1 it is possible to achieve the ,order of ,balance1 in all cases4 ,illustration3 ,fig4 #afa ,for this design ,i have made another arrangement of my seven lines4 ,the arrangement suggests movement4 ,in repeating the arrangement at regular and equal intervals1 without change of attitude1 ,i produce the effect of ,rhythm4 ,without resorting to inversion1 it is difficult to make even an approximation to ,symmetry with such terms 7see ,fig4 #aeg71 but there is little or no difficulty in making a consistent or fairly consistent movement out of them1 which1 being repeated at regular intervals1 without change of attitude1 or with a gradual change of attitude1 will produce the effect of ,rhythm4 ,up to this point ,i have spoken of the composition of lines in juxtaposition1 that is to say1 the lines have been placed near together so as to be seen together4 ,i have not spoken of the possibilities of ,contact and ,interlacing4 ,the lines in any composition may touch one another or cross one another4 ,the result will be a composition of connected lines4 ,in certain cases the lines will become the outlines of areas4 ,i will defer the illustration of contacts and interlacings until ,i come to consider the composition of outlines4 ,,outlines ,,definition ,,of ,,outlines #ajf4 ,outlines are lines which1 returning to themselves1 make inclosures and describe areas of different measures and shapes4 ,what has been said of lines may be said1 also1 of outlines4 ,it will be worth while1 however1 to give a separate consideration to outlines1 as a particularly interesting and important class of lines4 ,as in the case of dots and lines1 ,i shall disregard the fact that the outlines may be drawn in different tones1 making different contrasts of value1 color1 or color-intensity with the ground-tone upon which they are drawn4 ,i shall1 also1 disregard possible differences of width in the lines which make the outlines4 ,i shall confine my attention1 here1 to the measures and shapes of the outlines and to the possibilities of ,harmony1 ,balance1 and ,rhythm in those measures and shapes4 ,,harmony1 ,,balance1 ,,and ,,rhythm ,,in ,,outlines #ajg4 ,what is ,harmony or ,balance or ,rhythm in a line is ,harmony1 ,balance1 or ,rhythm in an ,outline4 ,illustration3 ,fig4 #afb ,in this outline we have ,measure-,harmony in the angles1 ,measure-,harmony of lengths in the legs of the angles1 ,measure and ,shape-,balance on a center and ,symmetry on the vertical axis4 ,the same statement will be true of all polygons which are both equiangular and equilateral1 when they are balanced on a vertical axis4 ,illustration3 ,fig4 #afc ,in this case we have ,measure-,harmony of angles but no ,measure-,harmony of lengths in the legs of the angles4 ,we have lost ,measure and ,shape-,balance on a center which we had in the previous example4 ,illustration3 ,fig4 #afd ,in this case the angles are not all in a ,harmony of ,measure2 but we have ,measure-,harmony of lengths in the legs of the angles1 and we have ,measure and ,shape-,balance on a center4 ,there is a certain ,harmony in the repetition of a relation of two angles4 ,illustration3 ,fig4 #afe ,in this case we have ,measure-,harmony in the angles1 which are equal1 and a ,harmony due to the repetition of a certain measure-relation in the legs of the angles4 ,as in ,fig4 #afb1 we have here a ,measure and ,shape-,balance on a center and ,symmetry on the vertical axis4 ,this polygon is not equilateral1 but its sides are symmetrically disposed4 ,many interesting and beautiful figures may be drawn in these terms4 ,illustration3 ,fig4 #aff ,we have in the circle the most harmonious of all outlines4 ,the ,harmony of the circle is due to the fact that all sections of it have the same radius and equal sections of it have1 also1 the same angle-measure4 ,the circle is1 of course1 a perfect illustration of ,measure and ,shape-,balance on a center4 ,the balance is also symmetrical4 ,we have a ,harmony of ,directions in the repetition of the same change of direction at every point of the outline1 and we have a ,harmony of ,distances in the fact that all points of the outline are equally distant from the balance-center1 which is unmistakably felt4 ,illustration3 ,fig4 #afg ,the ,ellipse is another example of ,measure and ,shape-,balance on a center4 ,in this attitude it is also an illustration of ,symmetry4 ,illustration3 ,fig4 #afh ,in this case we still have balance but no symmetry4 ,the attitude suggests movement4 ,we cannot help feeling that the figure is falling down to the left4 ,a repetition at equal intervals would give us ,rhythm4 ,illustration3 ,fig4 #afi ,in this case we have an outline produced by the single inversion of a line in which there is the repetition of a certain motive in a gradation of measures4 ,that gives ,shape-,harmony without ,measure-,harmony4 ,this is a case of ,symmetrical ,balance4 ,it is also a case of rhythmic movement upward4 ,the movement is mainly due to convergences4 ,illustration3 ,fig4 #agj ,in this case1 also1 the shapes repeated on the right side and on the left side of the outline show movements which become in repetitions almost rhythmical4 ,the movement is up in spite of the fact that each part of the movement is1 in its ending1 down4 ,we have in these examples symmetrical balance on a vertical axis combined with rhythm on the same axis4 ,it may be desirable to find the balance-center of an outline when only the axis is indicated by the character of the outline4 ,the principle which we follow is the one already described4 ,in ,fig4 #afi we have a symmetrical balance on a vertical axis1 but there is nothing to indicate the balance-center4 ,it lies on the axis somewhere1 but there is nothing to show us where it is4 ,regarding the outline as a line of attractions1 the eye is presumably held at their balance-center1 wherever it is4 ,exactly where it is is a matter of visual feeling4 ,the balance-center being ascertained1 it may be indicated by a symmetrical outline or inclosure1 the center of which cannot be doubtful4 ,illustration3 ,fig4 #aga ,the balance-center1 as determined by visual feeling1 is here clearly indicated4 ,in this case besides the balance on a center we have also the ,symmetry which we had in ,fig4 #afi4 ,illustration3 ,fig4 #agb ,the sense of ,balance is1 in this case1 much diminished by the change of attitude in the balanced outline4 ,we have our balance upon a center1 all the same2 but the balance on the vertical axis being lost1 we have no longer any ,symmetry4 ,it will be observed that balance on a center is not inconsistent with movement4 ,if this figure were repeated at equal intervals without change of attitude1 or with a gradual change1 we should have the ,rhythm of a repeated movement4 ,in some outlines only certain parts of the outlines are orderly1 while other parts are disorderly4 ,illustration3 ,fig4 #agc ,in the above outline we have two sections corresponding in measure and shape-character and in attitude4 ,we have1 therefore1 certain elements of the outline in harmony4 ,we feel movement but not rhythm in the relation of the two curves4 ,there is no balance of any kind4 ,we ought to be able to recognize elements of order as they occur in any outline1 even when the outline1 as a whole1 is disorderly4 ,illustration3 ,fig4 #agd ,in order to balance the somewhat irregular outline given in ,fig4 #agc1 we follow the procedure already described4 ,the effect1 however1 is unsatisfactory4 ,the composition lacks stability4 ,illustration3 ,fig4 #age ,the attitude of the figure is here made to conform1 as far as possible1 to the shape and attitude of the symmetrical framing3 this for the sake of ,shape and ,attitude-,harmony4 ,the change of attitude gives greater stability4 ,,interior ,,dimensions ,,of ,,an ,,outline #ajh4 ,a distinction must be drawn between the measures of the outline1 as an outline1 and the measures of the space or area lying within the outline3 what may be called the interior dimensions of the outline4 ,illustration3 ,fig4 #agf ,in this case we must distinguish between the measures of the outline and the dimensions of the space inclosed within it4 ,when we consider the measures--not of the outline1 but of the space or area inside of the outline--we may look in these measures1 also1 for ,harmony1 for ,balance1 or for ,rhythm1 and for combinations of these principles4 ,,harmony ,,in ,,the ,,interior ,,dimensions ,,of ,,an ,,outline #aji4 ,we have ,harmony in the interior dimensions of an outline when the dimensions correspond or when a certain relation of dimensions is repeated4 ,illustration3 ,fig4 #agg ,in this case we have an outline which shows a ,harmony in the correspondence of two dimensions4 ,illustration3 ,fig4 #agh ,in this case we have ,harmony in the correspondence of all vertical dimensions1 ,harmony in the correspondence of all horizontal dimensions1 but no relation of ,harmony between the two4 ,it might be argued1 from the fact that the interval in one direction is twice that in the other1 that the dimensions have something in common1 namely1 a common divisor4 ,it is very doubtful1 however1 whether this fact is appreciable in the sense of vision4 ,the recurrence of any relation of two dimensions would1 no doubt1 be appreciated4 ,we should have1 in that case1 ,shape-,harmony4 ,illustration3 ,fig4 #agi ,in this circle we have a ,measure-,harmony of diameters4 ,illustration3 ,fig4 #ahj ,in this case we have a ,harmony due to the repetition of a certain ratio of vertical intervals3 #a3c1 #a3c1 #a3c4 #aaj4 ,any gradual diminution of the interval between opposite sides in an outline gives us a convergence in which the eye moves more or less rapidly toward an actual or possible contact4 ,the more rapid the convergence the more rapid the movement4 ,illustration3 ,fig4 #aha ,in this case we have not only symmetrical balance on a vertical axis but movement1 in the upward and rapid convergence of the sides ,,ba and ,,ca toward the angle ,a4 ,the question may be raised whether the movement1 in this case1 is up from the side ,,bc to the angle ,a or down from the angle ,a toward the side ,,bc4 ,i think that the reader will agree that the movement is from the side ,,bc into the angle ,a4 ,in this direction the eye is more definitely guided4 ,the opposite movement from ,a toward ,,bc is a movement in diverging directions which the eye cannot follow to any distance4 ,as the distance from ,,bc toward ,a decreases1 the convergence of the sides ,,ba and ,,ca is more and more helpful to the eye and produces the feeling of movement4 ,the eye finds itself in a smaller and smaller space1 with a more and more definite impulse toward ,a4 ,it is a question whether the movement from ,,bc toward ,a is rhythmical or not4 ,the movement is not connected with any marked regularity of measures4 ,i am inclined to think1 however1 that the gradual and even change of measures produces the feeling of equal changes in equal measures4 ,if so1 the movement is rhythmical4 ,when the movement of the eye in any convergence is a movement in regular and marked measures1 as in the example which follows1 the movement is rhythmical1 without doubt4 ,illustration3 ,fig4 #ahb ,the upward movement in this outline1 being regulated by measures which are marked and equal1 the movement is certainly rhythmical1 according to our understanding and definition of ,rhythm4 ,comparing ,fig4 #aha with ,fig4 #ahb1 the question arises1 whether the movement in ,fig4 #ahb is felt to be any more rhythmical than the movement in ,fig4 #aha4 ,the measures of the movement in ,fig #aha are not marked1 but ,i cannot persuade myself that they are not felt in the evenness of the gradation4 ,the movement in ,fig4 #aha is easier than it is in ,fig4 #ahb1 when the marking of the measures interferes with the movement4 ,illustration3 ,fig4 #ahc ,in this case we have another illustration like ,fig4 #ahb1 only the measures of the rhythm are differently marked4 ,the force of the convergence is greatest in ,fig4 #aha4 ,it is somewhat diminished by the measure-marks in ,fig4 #ahb4 ,it is still further diminished1 in ,fig4 #ahc1 by the angles that break the measures4 ,illustration3 ,fig4 #ahd ,in this case the movement is more rapid again1 the measures being measures of an arithmetical progression4 ,there is a crowding together of attractions in the direction of the convergence1 and the movement is easier than it is in ,fig4 #ahc1 in spite of the fact that the lines of convergence are more broken in ,fig4 #ahd4 ,there is an arithmetical diminution of horizontal as well as of vertical lines in ,fig4 #ahd4 ,illustration3 ,fig4 #ahe ,in this case the measures of the rhythm are in the terms of a geometrical progression4 ,the crowding together of attractions is still more rapid in this case and the distance to be traversed by the eye is shorter4 ,the convergence1 however1 is less compelling1 the lines of the convergence being so much broken--unnecessarily4 ,the movement will be very much retarded1 if not prevented1 by having the movement of the crowding and the movement of the convergence opposed4 ,illustration3 ,fig4 #ahf ,there is no doubt that in this example1 which is to be compared with that of ,fig4 #ahd1 the upward movement is almost prevented4 ,there are here two opposed movements3 that of the convergence upward and that of a crowding together of attractions downward4 ,the convergence is stronger1 ,i think1 though it must be remembered that it is probably easier for the eye to move up than down1 other things being equal4 #aaa4 ,the movements in all of these cases may be enhanced by substituting for the straight lines shapes which are in themselves shapes of movement4 ,illustration3 ,fig4 #ahg ,here1 for example1 the movement of ,fig4 #ahd is facilitated and increased by a change of shape in the lines1 lines with movement being substituted for lines which have no movement1 beyond the movement of the convergence4 ,illustration3 ,fig4 #ahh ,in ,fig4 #ahh all the shapes have a downward movement which contradicts the upward movement of convergence4 ,the movement down almost prevents the movement up4 #aab4 ,the movement of any convergence may be straight1 angular1 or curved4 ,illustration3 ,fig4 #ahi ,in this case the movement of the convergence is angular4 ,it should be observed that the movement is distributed in the measures of an arithmetical progression1 so that we have1 not only movement1 but rhythm4 ,illustration3 ,fig4 #aij ,in this case the movement of convergence is in a curve4 ,the stages of the movement1 not being marked1 the movement is not rhythmical1 unless we feel that equal changes are taking place in equal measures4 ,i am inclined to think that we do feel that4 ,the question1 however1 is one which ,i would rather ask than answer1 definitely4 ,illustration3 ,fig4 #aia ,in this case the movement is1 unquestionably1 rhythmical1 because the measures are clearly marked4 ,the measures are in an arithmetical progression4 ,they diminish gradually in the direction of the convergence1 causing a gradual crowding together of attractions in that direction4 ,substituting1 in the measures1 shapes which have movement1 the movement of the rhythm may be considerably increased1 as is shown in the example which follows4 ,illustration3 ,fig4 #aib ,this is a case in which the movement is1 no doubt1 facilitated by an association of ideas1 the suggestion of a growth4 #aac4 ,the more obvious the suggestion of growth1 the more inevitable is the movement in the direction of it1 whatever that direction is4 ,it must be understood1 however1 that the movement in such cases is due to an association of ideas1 not to the pull of attractions in the sense of vision4 ,the pull of an association of ideas may or may not be in the direction of the pull of attractions4 ,illustration3 ,fig4 #aic ,in ,fig4 #aic we have an illustration of a rhythmic movement upward4 ,the upward movement is due quite as much to an association of ideas1 the thought of a growth of vegetation1 as it is to mere visual attractions4 ,it happens that the figure is also an illustration of ,symmetrical ,balance4 ,as we have ,harmony in the similarity of the opposite sides1 the figure is an illustration of combined ,harmony1 ,balance1 and ,rhythm4 ,there is another point which is illustrated in ,fig4 #aic4 ,it is this3 that we may have rhythmic movement in an outline1 or1 indeed1 in any composition of lines1 which shows a gradual and regular change from one shape to another2 which shows a gradual and regular evolution or development of shape-character2 provided the changes are distributed in regular and marked measures and the direction of the changes1 the evolution1 the development1 is unmistakable2 as it is in ,fig4 #aic4 ,the changes of shape in the above outline are changes which are gradual and regular and suggest an upward movement unmistakably4 ,the movement1 however1 involves a comparison of shape with shape1 so it is as much a matter of perception as of sensation4 ,evolutions and developments in ,space1 in the field of vision1 are as interesting as evolutions and developments in the duration of ,time4 ,when the changes in such movements are regular1 when they take place in regular and marked measures1 when we must take them in a certain order1 the movements are rhythmical1 whether in ,time or in ,space4 ,,the ,,attitudes ,,of ,,outlines #aad4 ,any outline1 no matter what dimensions or shape it has1 may be turned upon a center and in that way made to take a great number and variety of attitudes4 ,not only may it be turned upon a center but inverted upon an axis4 ,being inverted1 the inversion may be turned upon a center and made to take another series of attitudes1 and this second series of attitudes will be different from the first series1 except in cases of axial symmetry in the outline or area4 ,it must be clearly understood that a change of attitude in any outline or area is not a change of shape4 #aae4 ,what has been said of ,harmony1 ,balance1 and ,rhythm in the attitudes of a line applies equally well to outlines and to the spaces defined by them4 ,,the ,,arrangement ,,and ,,composition ,,of ,,outlines #aaf4 ,by the composition of outlines ,i mean putting two or more outlines in juxtaposition1 in contact or interlacing4 ,in all cases of interlacing1 of course1 the shape-character of the interlacing outlines is lost4 ,the outlines become the outlines of other areas and of a larger number of them4 ,our object in putting outlines together is1 in ,pure ,design1 to illustrate the orders of ,harmony1 ,balance1 and ,rhythm1 to achieve ,order1 as much as we can1 if possible ,beauty4 ,i will now give a series of examples with a brief analysis or explanation of each one4 ,illustration3 ,fig4 #aid ,in this case we have ,shape-,harmony in the outlines and also a ,harmony of ,attitudes4 ,illustration3 ,fig4 #aie ,here we have another illustration of the ,harmony of ,shapes and of ,attitudes1 with a ,harmony of ,intervals1 which we did not have in ,fig4 #aid4 ,illustration3 ,fig4 #aif ,in this case we have a ,harmony of ,attitudes and of ,intervals 7the ,harmony of a repeated ,relation of ,intervals7 in what may be called an ,all-,over ,repetition4 ,illustration3 ,fig4 #aig ,in this case we have a ,harmony of ,attitudes in the repetition of a relation of two opposite attitudes2 this with ,shape-,harmony and ,interval-,harmony4 ,illustration3 ,fig4 #aih ,in this case we have a ,symmetry of ,attitudes1 with ,shape-,harmony and ,interval-,harmony4 ,turning the composition off the vertical axis we should have ,balance but no ,symmetry4 ,the balance-center will be felt in all possible attitudes of this composition4 ,illustration3 ,fig4 #aii ,in this case ,i have repeated a certain outline1 which gives me the ,harmony of a repetition1--this in connection with a progression in scale1 so that the ,harmony is ,shape-,harmony1 not ,measure-,harmony4 ,we have in the attitude of this repetition a ,symmetrical ,balance4 ,the movement is rhythmical and the direction of the rhythm is up4 ,the movement in ,fig4 #aii might be indefinitely increased by the introduction into it of a gradation of attractions1 increasing in number4 ,that means that the extent of contrasting edges is increased from measure to measure4 ,illustration3 ,fig4 #bjj ,the addition of details1 increasing in number from measure to measure upward1 increases the movement of the rhythm in that direction4 ,illustration3 ,fig4 #bja ,taking the arrangement of ,fig4 #aii and repeating it six times at diverging angles of sixty degrees1 we get what may be called a radial balance upon the basis of a hexagon4 ,outlines may be drawn one inside of the other or several inside of one4 ,illustration3 ,fig4 #bjb ,this is a case of outlines-within-outlines and of ,shape-,harmony without ,measure-,harmony4 ,there is1 also1 a ,harmony of ,attitudes1 but no ,harmony of ,intervals4 ,interesting results may be produced by drawing a series of outlines similar in shape1 the second inside of the first1 the third inside of the second1 and so on4 ,illustration3 ,fig4 #bjc ,in this case1 for example1 we have the outlines drawn one inside of the other4 ,the outlines have all the same shape1 but different measures4 ,it is a case of ,shape-,harmony and ,harmony of ,attitudes1 without ,measure-,harmony1 and without any ,harmony of ,intervals4 ,this is a very interesting and important form of ,design which has many applications4 ,illustration3 ,fig4 #bjd ,in this case1 also1 we have ,shape-,harmony without ,measure-,harmony4 ,we have a ,harmony of ,attitudes and also of ,intervals1 the spaces between the outlines corresponding4 ,illustration3 ,fig4 #bje ,here we have the ,harmony of an alternation of ,attitudes repeated1 with ,shape-,harmony1 without ,measure-,harmony4 ,in all forms of design in which we have the concentric repetition of a certain outline we have1 in connection with the feeling of a central balance1 the feeling of a movement or movements toward the center4 ,these movements are due to convergences4 ,movements carrying the eye away from the center1 in opposite directions1 interfere with the feeling of balance4 ,the feeling is enhanced1 however1 when the movements converge and come together4 ,we may have not only an alternation of attitudes in these cases1 but an alternation of shape-character4 ,illustration3 ,fig4 #bjf ,the repetition of outlines-within-outlines may be concentric or eccentric4 ,the repetition is concentric in ,fig4 #bjd4 ,it is eccentric in the example which follows4 ,illustration3 ,fig4 #bjg ,in all eccentric repetitions like this we have a lack of balance and the suggestion of movement4 ,the direction of the movement is determined by the direction of convergences and of the crowding together of attractions4 ,the movement in ,fig4 #bjg is up-to-the-left1 unmistakably4 ,repeating the composition of ,fig4 #bjg1 at regular intervals and without change of attitude1 the movement up-to-the-left would be extended to the repetitions and the movement would be rhythmical4 ,the movement is rhythmical in the composition itself1 as shown in ,fig4 #bjg1 because the movement in the composition is regular in character1 regular in its measures1 and unmistakable in direction4 ,illustration3 ,fig4 #bjh ,this is another example of eccentric repetition in outlines-within-outlines4 ,as in ,fig4 #bjg1 we have movement1 and the movement is rhythmical4 ,in the examples ,i have given there have been no contacts and no interlacings4 ,contacts and interlacings are possible4 ,illustration3 ,fig4 #bji ,here1 for an example1 is an instance of contact1 with ,harmony of ,attitudes and a ,symmetrical ,balance on a vertical axis4 ,illustration3 ,fig4 #baj ,in this case we have contacts1 with no ,harmony of ,attitudes4 ,the balance which is central as well as axial is in this attitude of the figure symmetrical4 ,illustration3 ,fig4 #baa ,here we have a similar composition with interlacings4 ,when the outlines have different shapes as well as different measures1 particularly when the outlines are irregular and the shapes to be put together are1 in themselves1 disorderly1 the problem of composition becomes more difficult4 ,the best plan is to arrange the outlines in a group1 making as many orderly connections as possible4 ,taking any composition of outlines and repeating it in the different ways which ,i have described1 it is generally possible to achieve orderly if not beautiful results4 ,illustration3 ,fig4 #bab ,here are five outlines1 very different in shape-character4 ,let us see what can be done with them4 ,a lot of experiments have to be tried1 to find out what connections1 what arrangements1 what effects are possible4 ,the possibilities cannot be predicted4 ,using tracing-paper1 a great many experiments can be tried in a short time1 though it may take a long time to reach the best possible results4 ,illustration3 ,fig4 #bac ,in this example ,i have tried to make a good composition with my five outlines4 ,the problem is difficult4 ,the outlines to be combined have so little ,harmony4 ,the only ,harmony we can achieve will be the ,harmony of the same arrangement of shapes repeated1 which amounts to ,shape-,harmony4 ,inversions will give us the satisfaction of ,balance4 ,inversions on a vertical axis will give us the satisfaction of ,symmetry4 ,in the design above given ,i have achieved simply the ,harmony of a relation of shapes repeated1 with ,rhythm4 ,the ,rhythm is due to the repetition of a decidedly unbalanced group of elements with a predominance of convergences in one direction4 ,the movement is on the whole up1 in spite of certain downward convergences4 ,the upward convergences predominate4 ,there are more inclinations to the right than to the left1 but the composition which is repeated is unstable in its attitude and suggests a falling away to the left4 ,the resultant of these slight divergences of movement is a general upward movement4 ,illustration3 ,fig4 #bad ,in this case ,i have less difficulty than in ,fig4 #bac1 having left out one of my five outlines1 the one most difficult to use with the others4 ,there is a great gain of ,harmony4 ,there is a ,harmony of ,intervals and a ,harmony in the repetition of the same grouping of outlines4 ,in the outlines themselves we have a ,harmony of curved character1 and the curves fit one another very well1 owing to a correspondence of measure and shape-character in certain parts4 ,in such cases we are able to get considerable ,harmony of ,attitudes into the composition4 ,there is a ,harmony of ,attitudes in the repeats1 as well as in certain details4 ,comparing ,fig4 #bad with ,fig4 #bac1 ,i am sure the reader will agree that we have in ,fig4 #bad the larger measure of ,harmony4 ,illustration3 ,fig4 #bae ,in ,fig4 #bae ,i have used inversions and repetitions of the rather disorderly outline which gave me so much difficulty when ,i tried to combine it with the other outlines4 ,whatever merit the composition has is due solely to the art of composition1 to the presence of ,attitude-,harmony1 ,interval-,harmony1 and to the inversions and repetitions2 inversions giving ,balance1 repetitions giving ,harmony4 ,while it is important to recognize the limitation of the terms in this problem1 it is important to yield to any definite impulse which you may feel1 though it carries you beyond your terms4 ,the value of a rule is often found in breaking it for a good and sufficient reason2 and there is no better reason than that which allows you1 in ,design1 to follow any impulse you may have1 provided that it is consistent with the principles of ,order4 ,illustration3 ,fig4 #baf ,in this case an effort has been made to modify the terms already used so as to produce a more rapid and consistent movement4 ,advantage has been taken of the fact that the eye is drawn into all convergences1 so all pointing down has been1 so far as possible1 avoided4 ,the movement is distinctly rhythmical4 ,in the previous examples ,i have avoided contacts and interlacing4 ,it was not necessary to avoid them4 ,illustration3 ,fig4 #bag #aag4 ,what is done1 in every case1 depends upon the designer who does it4 ,he follows the suggestions of his imagination1 not1 however1 with perfect license4 ,the imagination acts within definite limitations1 limitations of terms and of principles1 limitations of certain modes in which terms and principles are united4 ,in spite of these limitations1 however1 if we give the same terms1 the same principles1 and the same modes to different people1 they will produce very different results4 ,individuality expresses itself in spite of the limitation of terms and modes1 and the work of one man will be very different from the work of another1 inevitably4 ,we may have ,order1 ,harmony1 ,balance1 or ,rhythm in all cases1 ,beauty only in one case1 perhaps in no case4 ,it must be remembered how1 in the practice of ,pure ,design1 we aim at ,order and hope for ,beauty4 ,beauty is found only in supreme instances of ,order1 intuitively felt1 instinctively appreciated4 ,the end of the practice of ,pure ,design is found in the love of the ,beautiful1 rather than in the production of beautiful things4 ,beautiful things are produced1 not by the practice of ,pure ,design1 but out of the love of the ,beautiful which may be developed by the practice4 ,,areas #aah4 ,i have already considered the measures of areas1 in discussing the interior dimensions of outlines1 and in discussing the outlines themselves ,i have considered the shapes of areas4 ,it remains for me to discuss the tones in which the areas may be drawn and the tone-contrasts by which they may be distinguished and defined--in their positions1 measures1 and shapes4 ,,linear ,,areas #aai4 ,before proceeding1 however1 to the subject of tones and tone-relations1 ,i must speak of a peculiar type of area which is produced by increasing or diminishing the width of a line4 ,i have postponed the discussion of measures of width in lines until now4 ,a line may change its width in certain parts or passages4 ,it may become wider or narrower as the case may be4 ,the wider it is the more it is like an area4 ,if it is sufficiently wide1 the line ceases to be a line1 and becomes an area4 ,the line may change its width abruptly or gradually4 ,the effect of the line is by these changes indefinitely varied4 ,the line of ,design is not the line of ,geometry4 #abj4 ,considerable interest may be given to what ,i have called ,linear ,progressions by changing the width of the line at certain points1 in certain passages1 and more or less abruptly4 ,the changes will be like accents in the line1 giving variety and1 possibly1 an added interest4 ,illustration3 ,fig4 #bah ,let us take this line as the motive of a linear progression4 ,we can give it a different character1 perhaps a more interesting character1 by widening all the vertical passages1 as follows3-- ,illustration3 ,fig4 #bai ,this is what we get for a motive by widening all the vertical passages4 ,illustration3 ,fig4 #bbj ,this is what we get for a motive by widening all the horizontal passages4 ,illustration3 ,fig4 #bba ,compare this ,progression1 in which ,i have used the motive of ,fig4 #bai1 with that of ,fig4 #gg1 p4 #dg4 ,the accents1 which in ,fig4 #bba occur in every repetition of the motive1 might occur only in certain repetitions1 at certain intervals4 ,illustration3 ,fig4 #bbb ,it is not necessary that the changes in the width of the line be abrupt1 as in the examples just given4 ,the width of the line may increase or diminish gradually1 in which case we may have1 not only accents in the line1 but movements due to gradations of dimension1 to convergences1 or to an increase or gradual crowding together of attractions in a series of visual angles4 ,illustration3 ,fig4 #bbc ,in this case we have a gradual increase followed by a diminution of the width of the line in certain parts1 and these changes occur at equal intervals4 ,a certain amount of rhythmic movement is given to the progression by such accents1 provided the direction of movement is unmistakable1 which it is not in this case4 ,it is not at all clear whether the movement is down-to-the-right or up-to-the-left4 ,it seems to me about as easy to move in one direction as in the other4 ,illustration3 ,fig4 #bbd ,in this case there is less doubt about the movement4 ,it seems to be down-to-the-right4 ,the eye is pulled through an increase of width-measures toward a greater extension and crowding together of contrasting edges4 ,illustration3 ,fig4 #bbe ,substituting outlines for areas in the previous illustration1 we are surprised1 perhaps1 to find that the movement is reversed4 ,we go up-to-the-left in this case1 not down-to-the-right4 ,the pull of a greater extension of tone-contrast in a given area was1 in ,fig4 #bbd1 sufficient to overcome the pull of a less evident convergence in the other direction4 ,by increasing or diminishing the width of lines1 doing it gradually or abruptly1 we are able to control the movement of the eye to an indefinite extent4 ,this is one of the important resources of the designer's art4 ,its use is not limited to forms of ,linear ,progression1 but may be extended to all forms of ,design in which lines are used4 ,illustration3 ,fig4 #bbf ,in this case1 for example1 the eye follows the direction of convergences1 but we can easily force it to turn and move in the opposite direction1 by widening the lines in that direction1 thus increasing the extent of contrasting edge until it more than outbalances the convergences2 as in the following illustration3-- ,illustration3 ,fig4 #bbg ,,the ,,arrangement ,,and ,,composition ,,of ,,areas #aba4 ,what has been said about the composition of ,lines and ,outlines applies equally well to the composition of ,areas1 so far as they are distinguished and defined by outlines4 ,we will now proceed to consider areas as distinguished and defined1 not by outlines1 but by tone-contrasts4 ,the composition of lines and outlines is one thing1 the composition of tones in different positions1 measures1 and shapes is another4 ,in putting lines and outlines together we draw4 ,the point of view is that of drawing4 ,in putting tones in different positions1 measures1 and shapes we paint4 ,the point of view is that of the painting4 ,,tones ,,and ,,tone-,,relations #abb4 ,up to this point ,i have avoided the consideration of ,tones and ,tone-,relations4 ,i have spoken of possible changes of tone in dots and in lines2 changes of value1 of color1 of color-intensity2 but it is not in dots nor in lines that these changes call for particular attention4 ,our interest has been in the positions1 measures1 shapes1 and attitudes of dots and lines1 and in the possibilities of arrangement and composition4 ,when it comes to the consideration of areas and area-systems1 however1 the subject of tone-relations becomes one of the greatest interest1 because areas are defined and distinguished1 not only by their outlines1 but quite as much by differences of tone2 that is to say1 by tone-contrasts4 ,,the ,,process ,,of ,,painting ,,as ,,distinguished ,,from ,,drawing #abc4 ,the first thing to consider is the tone of the surface upon which you are going to paint4 ,you then take a tone differing from the ground-tone1 in value1 in color1 or in color-intensity1 you put it in a certain position1 and you spread it over a certain extent of space4 ,in so doing you give to the space a certain shape4 ,this is the process of ,painting1 as distinguished from the process of ,drawing4 ,in ,drawing we think of lines and outlines first4 ,in ,painting we think of ,tones first1 of positions1 measures1 and shapes afterwards4 ,,definition ,,of ,,the ,,word ,,tone #abd4 ,in producing tones we use1 necessarily1 certain pigment-materials and mixtures of these materials4 ,the effect of light produced by any particular material or mixture we call its tone4 ,though ,i have been using the word ,tone ,i have not yet defined its meaning4 ,i will now do that4 ,,tone-,,analysis1--,,value1 ,,color1 ,,intensity1 ,,neutrality #abe4 ,in every tone we have to distinguish two elements1 the quantity of light in it--what we call its value--and the quality of the light in it--its color2 and the color1 whatever it is1--,red1 ,orange1 ,yellow1 ,green1 ,blue1 or ,violet1--may be intense or neutral4 ,by intensity ,i mean the quality of a color in its highest or in a very high degree4 ,by the intensity of ,red ,i mean ,red when it is as red as possible4 ,the mixture of ,vermilion and ,rose ,madder1 for example1 gives us a ,red of great intensity4 ,that is about the strongest ,red which we are able to produce with the pigment-materials which we use4 ,intensity must not be confounded with value nor value with intensity4 ,by value ,i mean more or less light4 ,by intensity ,i mean a great purity and brilliancy of color4 ,intensity stands in opposition to neutrality1 in which no color can be distinguished4 ,the more color we have in any tone the more intensity we have4 ,the less the intensity the less color1 and the absence of color means neutrality or grayness4 ,neutrality or grayness1 though it is the negation of color1 the zero of color1 so to speak1 must be classed as a color because upon analysis it proves to be a result of color combination or mixture4 ,when ,i speak1 as ,i shall from time to time1 of the neutral as a color1 it will be understood that ,i am speaking of a combination or mixture of colors in which no particular color can be distinguished4 ,i speak of the neutral as a color just as ,i speak of zero as a number4 ,we use zero as a number though it is no number1 and counts for nothing4 ,,study ,,of ,,tones ,,and ,,tone-,,relations #abf4 ,the study of tones and tone-relations means the study of pigment-materials and their effects1 to find out what quantities of light we can produce1 what qualities of color1 what intensities of color1 what neutralizations4 ,that is the problem of tones and tone-relations4 ,we cannot know much about tones and tone-relations until we have had experience in the use of pigment-materials4 ,we must be able to distinguish tones1 however slight the differences of value or of color or of color-intensity1 and we must be able to produce tones according to our discriminations3 this with exact precision4 ,in order to think in tone-relations we must have definite ideas of tone and of tone-relations1 in the form of visual images4 ,in order to express our ideas we must be able to paint4 ,we must have practice in painting and a great deal of it4 ,i propose to describe this practice in tones and tone-relations3 what it ought to be1 what forms it should take4 ,,pigment-,,materials #abg4 ,of pigments ,i use these3 ,blue ,black1 ,madder ,lake 7,deep71 ,rose ,madder1 ,indian ,red1 ,venetian ,red1 ,vermilion1 ,burnt ,sienna1 ,cadmium ,orange1 ,yellow ,ochre1 ,pale ,cadmium1 ,aureolin1 ,cremnitz ,white1 8,emeraude0 ,green 7,green ,oxide of ,chromium1 transparent71 ,cobalt ,blue1 ,french ,ultramarine ,blue4 ,these are the pigments which ,i suggest for oil-painting4 ,in water-color painting ,i should substitute ,charcoal ,gray for ,blue ,black4 8,emeraude ,green0 is often called ,viridian in the form in which it is used in water-color4 ,for ,cremnitz ,white ,i should substitute1 in water-color painting1 ,chinese ,white4 ,these are the pigment-materials which ,i use myself and recommend to others4 ,there are1 of course1 many other pigments which may be used1 but these will1 ,i think1 be found sufficient for all purposes4 ,provided with these pigments1 with a palette upon which to put them1 with brushes and other materials necessary for painting1 we are prepared to take up the study of tones and tone-relations4 ,,the ,,scale ,,of ,,values #abh4 ,it is evident that we have in black paint the least quantity of light which we can produce4 ,black is the lowest of all values4 ,it is equally evident that in white paint we have the greatest possible quantity of light4 ,white is the highest of all values4 ,mixing ,black and ,white in different proportions we can produce an indefinite number of intermediates4 ,we do not want1 however1 to be indefinite in our terms2 on the contrary we want to be as definite as possible4 ,let us1 therefore1 establish1 between ,black and ,white1 a ,middle ,value 7,m72 between ,black and ,middle ,value an intermediate ,dark 7,d72 between ,middle ,value and ,white an intermediate ,light 7,lt71 and between these five values the intermediates1 ,low ,dark 7,,ld71 ,high ,dark 7,,hd71 ,low ,light 7,l,lt71 and ,high ,light 7,h,lt74 ,further intermediates 7eight7 may be established1 but to these we need not give any particular names4 ,if we have occasion to refer to any one of them we can say that it lies between certain quantities or values of light for which we have names4 ,we can speak1 for example1 of the intermediate between ,middle and ,high ,dark1 and it may be described in writing by the formula ,m-,,hd4 ,with this terminology we shall be able to describe the principal quantities or values of light both in speech and in writing4 ,in order to study the principal quantities or values of light and the possibilities of contrast which they afford it is wise to avoid all differences of color and color-intensity4 ,to do that we produce our ,scale of ,values in terms of perfect neutrality1 in which no color can be distinguished4 ,when we use the names of different values it is understood that they are values of ,neutrality4 ,the term ,m1 for example1 stands for ,neutral ,middle1 ,d for ,neutral ,dark1 ,lt for ,neutral ,light4 ,,contrasts ,,of ,,the ,,scale ,,of ,,values #abi4 ,having produced a scale of nine neutral values1 including ,white and ,black1 the question arises as to the number of contrasts which it affords1 and it is easy to see that the number is thirty-six4 ,the vertical lines in the following diagram indicate the possible contrasts of value in the ,scale of ,values4 ,counting the lines1 we see that the number of contrasts is thirty-six4 ,producing these contrasts1 we shall see what each one amounts to4 ,illustration3 ,diagram #a ,,definition ,,of ,,value-,,relations #acj4 ,the best method of describing and distinguishing these value-contrasts will be to use the value-names in a form of fractions4 ,for example1 ,lt_/,d would mean a contrast of ,dark on ,light1 ,d_/,lt would mean a contrast of ,light on ,dark1 ,wt_/,blk would mean a contrast of ,black on ,white4 ,that is to say1 ,white is subdivided or crossed by ,black4 ,when we wish to describe several contrasts in combination1 we set the value of the ground-tone above the line1 always1 the value of the tone or tones put upon it below1 thus3-- ,lt ----------- ,wt ,blk ,this formula means1 spots of ,white and ,black on a ground of ,light4 ,lt -------------- ,wt ,blk --- ,m ,this formula means spots of ,white and ,black on a ground-tone of ,light1 with a spot of ,middle on the ,white1 the ,middle being altogether separated from the ,light by the ,white4 ,there is no definite thinking except in definite terms1 and without some such terminology as ,i have devised and described1 it will be impossible to enter upon an experimental practice in value-relations with the hope of definite results4 ,with definite terms1 however1 we can take up the practice in value-relations with a good chance of learning1 in the course of time1 all that there is to be learned4 ,,scales ,,of ,,colors ,,in ,,different ,,values #aca4 ,we must now proceed to the consideration of the qualities of light beyond the ,scale of ,neutral ,values1 in the region of colors and color-intensities1--a region of tones which we have not yet explored4 ,it is evident that no color can exist either in the value of ,black or in the value of ,white1 but in every other value we have the possibility of all colors4 ,that is to say1 we may have ,red 7,r7 or ,orange 7,o7 or ,yellow 7,y7 or ,green 7,g7 or ,blue 7,b7 or ,violet 7,v7 or any of the colors lying intermediate between them1--,red ,orange 7,,ro71 ,orange ,yellow 7,,oy71 ,yellow ,green 7,,yg71 ,green ,blue 7,,gb71 ,blue ,violet 7,,bv71 or ,violet ,red 7,,vr73 all these1 in any value of the ,scale of ,values1 except in the value of ,black and in the value of ,white4 ,the possibilities of value and color1 in tones1 are exhibited in the following diagram3-- ,,diagram ,,of ,,values ,,and ,,colors ,wt ,wt ,h,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,h,lt ,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,lt ,l,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,l,lt ,m ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,m ,,hd ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,hd ,d ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,d ,,ld ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,ld ,blk ,blk ,diagram #b ,,definition ,,of ,,the ,,color-,,terms #acb4 ,it is important that the words which we use for the different colors should be well understood1 that in using them we use them with the same meanings4 ,by ,red ,i mean the only positive color which shows no element either of ,yellow or of ,blue4 ,it is the color which we often describe by the word crimson1 and we produce it by the mixture of ,rose ,madder and ,vermilion4 ,by ,yellow ,i mean the only positive color which shows no element either of ,red or ,blue4 ,it is the color of the primrose which may be produced by the pigment ,aureolin4 ,by ,blue ,i mean the only positive color which shows no element either of ,yellow or of ,red4 ,blue is seen in a clear sky after rain and in the pigment ,cobalt4 ,by ,orange ,i mean a positive color showing equal elements of ,red and of ,yellow4 ,by ,green ,i mean a positive color showing equal elements of ,yellow and of ,blue4 ,by ,violet ,i mean a positive color showing equal elements of ,blue and ,red4 ,the character of the intermediates is clearly indicated by their several names4 ,in each one we see the adjacents in equal measures4 ,this definition of the colors is only approximate4 ,it does not pretend to be scientific1 but it may help to bring us to a common understanding4 ,to carry these definitions farther1 ,i should have to produce examples4 ,this ,i can do in my class-room1 producing each color according to my idea1 exactly4 ,i might reach the same result approximately by color-printing1 but the result would not1 probably1 be permanent4 ,the samples produced by hand1 for use in the class-room1 can be reproduced from time to time when they no longer answer to the ideas which they are intended to express4 ,in this treatise ,i shall use a terminology instead of colored illustrations which would not be satisfactory1 or1 if satisfactory1 not so permanently4 ,,color-,,intensities ,,in ,,different ,,values #acc4 ,if we proceed to carry out the idea of ,diagram #b1 producing all the twelve colors in all of the seven values intermediate between the extremes of ,black and ,white1 making the colors1 in every case1 as strong1 as intense1 as is possible with the pigment-materials we have chosen to use1 we shall discover that the twelve colors reach their greatest intensities in different values2 that is to say1 in different quantities of light4 ,red reaches its greatest intensity in the value ,high ,dark1 ,orange in ,low ,light1 ,yellow in ,high ,light1 ,green in ,low ,light1 ,blue in ,high ,dark1 ,violet in ,low ,dark1 approximately2 and the intermediate colors reach their greatest intensities in the intermediate values1 approximately4 ,in order to indicate this fact in our diagram1 we will mark the positions of greatest intensity by putting the color signs in larger type4 ,,diagram ,,of ,,values1 ,,colors1 ,,and ,,color-,,intensities ,wt ,wt ,h,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,hl ,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,lt ,l,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,l,lt ,m ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,m ,,hd ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,hd ,d ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,d ,,ld ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,ld ,blk ,blk ,diagram #c ,,tones ,,of ,,the ,,spectrum ,,and ,,of ,,pigments #acd4 ,it is probable that we have in the ,spectrum an indication of the natural value-relations of the different colors when in their highest intensities4 ,owing to the limitations of pigment-material1 however1 it is impossible to reproduce the intensities of the ,spectrum satisfactorily4 ,an approximation is all that we can achieve in painting4 ,,the ,,spectrum ,,sequence ,,and ,,the ,,circuit ,,of ,,the ,,colors #ace4 ,having produced the scale of twelve colors in the values of their greatest intensities1 and as intense as possible1 we get an approximation to the ,spectrum with this difference1 that the color ,violet-,red 7,purple7 which we get in pigments and mixtures of pigments does not occur in the ,spectrum and1 so far as we know1 does not belong in the ,spectrum4 ,we have in the ,spectrum a sequence which begins with ,red and ends with ,violet4 ,it is a sequence1 not a circuit4 ,in pigment-mixtures1 however1 we have a circuit1 clearly enough1 and ,violet-,red is a connecting link between ,violet and ,red4 ,,the ,,complementaries #acf4 ,considering the circuit of the colors which we are able to produce with our pigment-materials1 the question arises1 ,what contrasts of color are the strongest8 what interval in the ,scale of ,colors gives us the strongest possible color-contrast8 ,producing the twelve colors in the values of their greatest intensities1 and as intense as possible1 and setting the tones in a circuit and in their natural and inevitable order1 you will observe that the greatest color-contrast is the contrast between colors at the interval of the seventh3 for example1 the contrasts of ,red and ,green1 or ,orange and ,blue1 or ,yellow and ,violet4 ,the colors at the interval of the sixth are less strong in contrast4 ,the contrast diminishes gradually as we pass from the interval of the seventh to the interval of the second4 ,the contrast of colors at the interval of the seventh1 the greatest possible contrast1 is called the contrast of the complementaries4 ,in estimating intervals we count the colors between which the intervals occur4 ,a ,,general ,,classification ,,of ,,tones #acg4 ,taking each color in the value of its greatest intensity 7as shown in the ,spectrum71 and as intense as possible1 the color may be neutralized in the direction of ,black 7neutral darkness7 or ,white 7neutral light7 or in the direction of any value of neutrality intermediate between ,black and ,white1 including the value of the color in its greatest intensity4 ,if we think of five degrees of neutralization1 including the extremes of ,intensity and ,neutrality1 we shall get as definite a terminology for color-intensities and color-neutralizations as we have for colors and for values4 ,the choice of five degrees is arbitrary4 ,it is a question how far the classification shall go1 what it shall include4 ,we are dealing with infinity1 and our limitations are necessarily arbitrary4 ,in ,diagram #c we have a general classification of tones as to value1 color1 color-intensity1 and color-neutralization4 ,of values we have nine4 ,of colors we have twelve4 ,of degrees of intensity and of neutralization we have five4 ,,color-,,intensities ,,and ,,color-,,neutralizations #ach4 ,it is important to distinguish between degrees of intensity and degrees of neutralization4 ,the degrees of color-intensity and of color-neutralization1 in any value1 are described by fractions4 ,the formula ,d-,r means1 value ,dark1 color ,red1 intensity three quarters4 ,the formula ,d-,r1 ,n means1 value ,dark1 color ,red1 three quarters neutralized4 ,the formula ,m-,o means1 value ,middle1 color ,orange1 intensity one half4 ,the formula ,m-,o1 ,n means1 value ,middle1 color ,orange1 half neutralized4 ,m-,o1 ,n is a tone somewhat less intense in color than ,m-,o1 as may be seen on the diagram4 ,the degree of neutralization has reference1 in all cases1 to the maximum intensity for the given value4 ,what that is1 theoretically1 may be seen by referring to the triangle of the color1 in which the possibilities of intensity1 in different values1 are clearly indicated4 ,,the ,,definition ,,of ,,particular ,,tones #aci4 ,to define any tone1 in this classification1 we must name its value1 its color1 and the degree of color-intensity or neutralization4 ,,the ,,classification ,,of ,,tones ,,necessarily ,,theoretical #adj4 ,the general classification of tones in which is shown all the possibilities of value1 color1 color-intensity1 and color-neutralization1 in reflecting pigments1 is necessarily theoretical1 or rather ideal1 because the degrees of intensity obtainable in any value depend upon the pigment-materials we have to use1 or choose to use4 ,no very great intensity of ,yellow1 even in the value of ,high ,light1 can be obtained if we choose to use a mixture of ,yellow ,ochre with ,ultramarine ,blue and ,white to produce it4 ,it is only when we use the most brilliant pigments--the ,madders1 ,vermilion1 the ,cadmiums1 ,aureolin1 and ,cobalt ,blue--that we can approximate toward the highest intensities1 as indicated in our diagram and exhibited in the ,spectrum4 ,,the ,,definition ,,of ,,particular ,,tone-,,relations #ada4 ,the number of tone-contrasts--contrasts of value1 of color1 and of color-intensity or neutralization--is1 evidently1 beyond calculation4 ,the method of describing any particular contrast or contrasts is easy to understand4 ,we have only to define the tones and to indicate how they cross one another4 ,,ro1 ,n --------- ,,vr ,this formula means that a spot of ,violet-,red 7,dark1 full intensity7 is put on a ground-tone of ,middle ,red-,orange1 half neutralized4 ,,ro ---------- ,,vr ,wt -- ,,yg ,this formula means that spots of ,low ,dark ,violet-,red 7full intensity7 and ,white are put on a ground-tone of ,middle ,red-,orange1 half intensity1 and that on the spot of ,low ,dark ,violet-,red 7full intensity71 as a ground-tone1 is put a spot of ,light ,yellow-,green 7full intensity74 ,it is not necessary to name the value when the color occurs in the value of its greatest intensity1 and it is not necessary to describe the intensity1 in any value1 when the greatest intensity possible to that value is meant4 ,in the first case the value is understood1 in the second case the intensity--the greatest for the value--is understood4 ,,sequences ,,of ,,values ,,and ,,colors #adb4 ,when1 in view of all possible tones1 as indicated in the general classification of tones1 according to value1 color1 and color-intensity1 or color-neutralization 7,diagram of the ,triangles71 we try to think what tones we shall use1 what contrasts of tone we shall produce1 we are sure to be very much 8at sea10 because of the great number and variety of possibilities4 ,even when we disregard differences of intensity and consider simply the possibilities of value and of color1 as shown in the general classification of tones according to value and color 7,diagram of ,values and ,colors1 p4 #acg71 we have still too many possibilities to consider1 and our choice of tones is determined by accident or habit rather than by clear vision or deliberate preference4 ,we shall find it worth while to limit our range in each experiment to some particular sequence of values and colors1 or to some particular combination of sequences4 ,instead of trying to think in the range of all values1 all colors1 we ought to limit our thinking1 in each case1 to the range of a few values and a few colors1--a few definite tones with which we can become perfectly familiar and of which we can have definite visual images4 ,it is only when we can imagine tones vividly that we can think satisfactorily in tone-relations4 ,we shall achieve this power of thinking in tones and tone-relations best through self-imposed limitations4 #adc4 ,we ought to begin our study of ,tones and ,tone-,relations with the ,scale of ,neutral ,values 7see p4 #ace74 ,we ought to work with the nine tones of this scale or sequence until we know them well1 until we can visualize them clearly1 and until we can produce them accurately2 until we can readily produce any single tone of the scale and any of the thirty-six possible contrasts which the scale affords4 ,besides the ,scale of ,neutral ,values there are three types of ,value and ,color ,sequence which we may use4 #add4 ,first4 ,we have the sequences which may be described as those of the ,vertical2 sequences which may be indicated by vertical lines drawn across the ,diagram of ,values and ,colors4 ,in each of these sequences1 twelve in number1 we have one color in all the values of the ,scale of ,values1 except ,black and ,white4 ,these sequences of the ,vertical1 as ,i shall call them1 are of very little use in ,pure ,design4 ,they give us value-contrasts and contrasts of color-intensity 7intensities of one color71 but no color-contrasts1 no differences of color4 ,the tones in these sequences are monotonous in color4 #ade4 ,second4 ,we have the sequences which may be described as those of the ,horizontal2 sequences which may be indicated by horizontal lines drawn across the ,diagram of ,values and ,colors4 ,in these sequences we have differences of color and color-intensity1 but all in one value4 ,these sequences give us color-contrasts 7different colors in different degrees of intensity71 but no value-contrasts4 ,the tones in these sequences are monotonous in value4 ,the sequences of one horizontal are of very little use4 #adf4 ,third4 ,we have the sequences which may be described as those of the ,diagonal2 sequences which may be indicated by lines drawn diagonally across the ,diagram of ,values and ,colors4 ,in drawing these sequences the reader must not forget that the ,scale of ,colors is a circuit1 so when he reaches the end of the diagram he returns and continues from the other end4 ,the diagram might1 for convenience in drawing these sequences1 be extended to several repetitions of the ,scale of ,colors4 ,in the sequences of the ,diagonal we have contrasts both of value and of color4 ,the color in these sequences changes from value to value through the ,scale of ,values4 ,each sequence gives us certain colors in certain values1 and in no case have we two colors in the same value4 ,to these sequences of the ,diagonal we must give our particular attention4 ,they are the sequences which we shall use constantly1 in ,representation as well as in the practice of ,pure ,design4 #adg4 ,the sequences of the ,diagonal fall into two divisions4 ,first1 there are the sequences which we draw through the ,diagram of ,values and ,colors from ,black up-to-the-right to ,white4 ,i shall call these the ,sequences of the ,right ,mode 7,sign 74 ,second1 there are the sequences which we draw from ,black up-to-the-left to ,white4 ,i shall call these the ,sequences of the ,left ,mode 7,sign 74 ,taking the lowest color in the sequence as the keynote1 we have for the ,right ,mode1 in the ,scale of ,twelve ,colors1 twelve distinct sequences of which this which follows is an example4 ,seq4 ,,ld-,,bv1 #b;ds ,wt ,h,lt - ,,oy ,lt - ,o ,l,lt - ,,ro ,m - ,r ,,hd - ,,vr ,d - ,v ,,ld - ,,bv ,blk ,in this sequence the colors are taken at the interval of the second4 ,that is what is meant by the abbreviation #b;ds4 ,taking the lowest color of the sequence as its keynote1 as before1 we have for the ,left ,mode twelve distinct sequences1 of which that which follows is an example4 ,seq4 ,,ld-,,oy1 #b;ds ,wt ,h,lt - ,,bv ,lt - ,v ,l,lt - ,,vr ,m - ,r ,,hd - ,,ro ,d - ,o ,,ld - ,,oy ,blk ,in this sequence1 as in the one previously given1 the colors are taken at the interval of the second4 #adh4 ,the colors in these diagonal sequences may be taken not only at intervals of the second1 but at intervals of the third1 the fourth1 the fifth1 the sixth1 and the seventh4 ,taking the colors at these different intervals we have1 for each interval1 twenty-four distinct sequences2 twelve for the ,right ,mode1 twelve for the ,left ,mode2 in all one hundred and forty-four different sequences4 #adi4 ,among the sequences of the ,diagonal those in which the colors are taken at the interval of the fifth are particularly interesting4 ,the colors taken at the interval of the fifth fall into four triads1--the first1 ,r-,y-,b1 the second1 ,,ro-,,yg-,,bv1 the third1 ,o-,g-,v1 the fourth1 ,,oy-,,gb-,,vr4 ,taking the colors in any of these triads in the two modes1 the ,right and the ,left1 we get six sequences of different colors in different values for each triad4 ,of these ,triad-,sequences ,i will give one as an example4 ,seq4 ,,ld-,r1 #eths ,wt ,h,lt - ,r ,lt - ,y ,l,lt - ,b ,m - ,r ,,hd - ,y ,d - ,b ,,ld - ,r ,blk ,the ,triad-,scales1 whether in the ,right ,mode or in the ,left ,mode1 are of great interest both in ,pure ,design and in ,representation4 ,in ,representation1 however1 the number of tones between the limits of ,black and ,white would1 as a rule1 be increased1 as in the extended diagram given farther on4 #aej4 ,instead of taking the colors at a certain interval in one mode or the other1 it is possible to take the colors in a certain relation of intervals repeated2 this in either mode4 ,the relation of a third to a fifth1 for instance1 being repeated1 in one mode or the other1 gives us some very interesting sequences4 ,the one which follows is an example4 ,,ld-,v1 #eth-#c;d ,wt ,h,lt - ,y #c;d ,lt - ,o #eth ,l,lt - ,v #c;d ,m - ,b #eth ,,hd - ,y #c;d ,d - ,o #eth ,,ld - ,v ,blk ,the relation of a seventh followed by two fifths1 when repeated1 in either mode1 gives a large number of sequences of very great interest1 particularly for ,representation4 #aea4 ,any two of the sequences which ,i have described as those of the ,vertical1 or more than two1 may be combined and used together4 ,in that case we have two or more colors to a value4 ,the monotony which is inevitable in any single vertical sequence is avoided in the combination of two or more such sequences4 ,seq4 ,r and ,seq4 ,y ,wt ,r ,h,lt ,y ,r ,lt ,y ,r ,l,lt ,y ,r ,m ,y ,r ,,hd ,y ,r ,d ,y ,r ,,ld ,y ,blk ,this is an example of the combination of two vertical sequences--the sequence of ,red and the sequence of ,yellow4 ,i have not found the sequences of this type very interesting4 ,in using them in ,representation ,i have found it desirable to have the intensities increase gradually toward white1 or1 what amounts to the same thing1 to have each color neutralized as it loses light4 ,that happens1 constantly1 in ,nature4 #aeb4 ,any two of the sequences which ,i have described as of the ,horizontal1 or even more than two1 may be combined and used together4 ,seq4 ,lt and ,d1 #c;ds ,lt ,r ,o ,y ,g ,b ,v ,d ,r ,o ,y ,g ,b ,v ,this scale gives us a variety of color-contrasts with one value-contrast4 ,the colors are taken at the interval of the third4 ,they might be taken at any interval up to that of the seventh1 in which case we should have a contrast of complementary colors in two values1 each color occurring in each value4 ,the monotony of value which is inevitable in any single horizontal sequence is in the combination of two or more such sequences avoided4 ,i have used the ,red-,yellow-,blue triad in three and in five values with satisfaction4 ,each value represents a plane of light in which certain differences of color are observed4 #aec4 ,any two of the sequences which ,i have described as of the ,diagonal may be combined1 in two ways4 ,first1 two sequences of the same mode may be combined4 ,second1 two sequences of different modes1 one of the ,right ,mode and one of the ,left ,mode1 may be combined4 ,,ld-,,gb #c;ds with ,,ld-,,ro #c;ds ,wt ,,gb ,h,lt ,,ro ,,bv ,lt ,,oy ,,vr ,l,lt ,,yg ,,ro ,m ,,gb ,,oy ,,hd ,,bv ,,yg ,d ,,vr ,,gb ,,ld ,,ro ,blk ,in this case we have a combination of two diagonal sequences of the ,left ,mode in which the colors are taken at the interval of the third4 ,changing the mode of these two sequences we get them inverted1 thus3-- ,,ld-,,gb ,,ld-,,ro #c;ds ,wt ,,gb ,h,lt ,,ro ,,yg ,lt ,,vr ,,oy ,l,lt ,,bv ,,ro ,m ,,gb ,,vr ,,hd ,,yg ,,bv ,d ,,oy ,,gb ,,ld ,,ro ,blk ,here the mode is changed and the combined sequences inverted4 ,the combined sequences may be both in the same mode or in different modes4 ,when the modes are different the sequences come into contact1 and in some cases cross one another4 ,,ld-,v #b;ds with ,,ld-,v #b;ds ,wt ,y ,,oy ,,yg ,o ,g ,,ro ,,gb ,r ,b ,,vr ,,bv ,v ,blk ,in this case we have a combination of two diagonal sequences4 ,one of the sequences is in the ,right1 the other is in the ,left ,mode4 ,the colors are in the values of their greatest intensities4 ,seq4 ,,ld-,,gb #c;ds with ,,ld-,,gb #c;ds ,wt ,,gb ,,yg ,,bv ,,oy ,,vr ,,ro ,,vr ,,oy ,,bv ,,yg ,,gb ,blk ,in this case the combined sequences cross one another in the tone of ,m-,,ro4 ,the combined sequences have three tones in common4 ,it may happen that the sequences combined will have no tones in common4 ,this is shown in the sequence which follows3-- ,,ld-,o #eths with ,,ld-,b #eths ,wt ,o ,h,lt ,b ,g ,lt ,y ,v ,l,lt ,r ,o ,m ,b ,g ,,hd ,y ,v ,d ,r ,o ,,ld ,b ,blk #aed4 ,instead of having two colors to a value in the combination of two vertical sequences1 we may have an alternation of colors in the values1 giving one color to a value1 thus3-- ,wt ,r ,h,lt ,lt ,y ,r ,l,lt ,m ,y ,r ,,hd ,d ,y ,r ,,ld ,blk ,it has seemed to me that the sequences in which we have one color to a value give better results than those in which we have two or more colors to a value4 #aee4 ,instead of having each color in two values in the combination of two horizontal sequences1 we may have the colors1 taken at equal intervals1 occurring alternately first in one value and then in the other4 ,lt ,r 4 ,y 4 ,b 4 ,d 4 ,o 4 ,g 4 ,v #aef4 ,these alternating sequences may proceed1 not only vertically and horizontally1 but diagonally across the diagram4 ,in that case the alternations will be between different value-intervals in a series of equal color-intervals or between different color-intervals in a series of equal value-intervals4 ,wt ,h,lt ,,vr ,lt ,,bv ,l,lt ,,gb ,v ,m ,,yg ,b ,,hd ,,oy ,g ,d ,y ,,ld ,o ,blk ,in this case the alternation is between different value-intervals through the ,scale of ,colors4 ,the movement being1 as a whole1 up-to-the-right1 is in the ,right ,mode4 ,i have not used any of the sequences1 of this type1 in which the value-intervals alternate1 first in one mode then in the other1 with a constant color-interval1 but ,i have used1 frequently1 the alternation of two different color-intervals in a series of equal value-intervals4 ,the sequences produced in this way are among the most interesting of all the many ,i have used4 ,i will give several examples4 ,wt ,h,lt ,y #gth ,lt ,v #eth ,l,lt ,o #gth ,m ,b #eth ,,hd ,r #gth ,d ,g #eth ,,ld ,v ,blk ,in this case the alternation is from the keynote1 ,low ,dark ,violet1 up first in the ,left ,mode a fifth1 then up in the ,right ,mode a seventh1 then in the ,left ,mode a fifth1 and so on up to ,white4 ,this particular alternation might be described as the relation of a fifth and a seventh repeated1 in the ,left ,mode4 ,wt ,h,lt ,y #gth ,lt ,v #eth ,l,lt ,g #gth ,m ,r #eth ,,hd ,b #gth ,d ,o #eth ,,ld ,v ,blk ,in the sequence just given the alternation is1 from the keynote ,low ,dark ,violet1 first in the ,right ,mode a fifth1 then in the ,left ,mode a seventh3 this through the ,scale of ,values up to ,white4 ,the order of the previous sequence is inverted4 ,this particular alternation might be described as the relation of a fifth and seventh repeated in the ,right ,mode4 ,the alternation of intervals of the fifth with intervals of the third gives some interesting sequences1 in which the alternation of intervals is1 necessarily1 an alternation of modes4 ,wt ,h,lt ,y #c;d ,lt ,g #eth ,l,lt ,o #c;d ,m ,y #eth ,,hd ,r #c;d ,d ,o #eth ,,ld ,v ,blk #aeg4 ,i have by no means exhausted the possibilities of value and color combination1 but ,i have indicated a sufficient number to serve the purposes of experimental practice in tone-relations1 for a long time to come4 ,the sequences which ,i have found most interesting1 in my own experiments1 have been the diagonal sequences of the two modes1 using intervals of the fifth1 and the diagonal sequences in which with equal value-intervals there is an alternation of certain color-intervals1--the seventh and the fifth1 and the seventh and two fifths4 ,it may very well be that these particular sequences interest me because ,i have used them more than others and consequently think in them more easily4 #aeh4 ,for the purposes of ,pure ,design the ,scale of ,nine ,values1 including ,black and ,white1 will be found sufficient2 but when it comes to the combination of ,design with ,representation1 and particularly to ,representation in ,full ,relief1 it will be necessary to introduce intermediates into the ,scale of ,values4 ,with this purpose in view ,i give one more diagram in which intermediates of value have been introduced4 ,for convenience in drawing out the different sequences upon this diagram ,i have repeated the ,scale of ,colors showing the connection of ,violet-,red with ,red4 ,this diagram 7#e7 is simply an extension of the ,diagram of ,values and ,colors given on p4 #acg4 #aei4 ,we may use the various sequences ,i have described without mixing the tones1 using the tones one at a time as they may be required2 but if we choose we may mix adjacents or thirds or even threes4 ,in that way the tone-possibilities of each sequence may be very much extended4 ,it may be well to show what the extension amounts to by giving one of the sequences with an indication of the result of mixtures within the limits described4 ,seq4 ,,ld-,r #eths ,wt ,h,lt ,r ,lt ,y ,l,lt ,b ,m ,r ,,hd ,y ,d ,b ,,ld ,r ,blk ,this is the sequence in which we decide to mix adjacents1 thirds1 and threes4 ,a ,,diagram ,,of ,,values ,,and ,,colors ,wt ,wt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,h,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,h,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,l,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,l,lt ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,m ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,m ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,hd ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,hd ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,d ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,d ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,ld ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,,ld ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,r ,,ro ,o ,,oy ,y ,,yg ,g ,,gb ,b ,,bv ,v ,,vr ,blk ,blk ,diagram #e #b;ds #c;ds #cs ,wt ,h,lt ,r ,o ,lt ,y ,v ,n ,g ,l,lt ,b ,o ,n ,v ,m ,r ,g ,n ,o ,,hd ,y ,v ,n ,g ,d ,b ,o ,n ,v ,,ld ,r ,blk ,this diagram shows the results of mixing seconds1 thirds1 and threes4 ,it is evident that in mixing the tones of any sequence in this way we go beyond the strict limitations of the sequence1 particularly in mixing thirds and threes4 ,the results obtained are fairly definite1 however1 and the tones obtainable are still within the range of definite thinking4 ,if we should go farther1 to the mixture of tones beyond the interval of the third1 we should get into the region of indefinite possibilities4 #afj4 ,it must be clearly understood that our object in using these sequences and more or less restricted mixtures is to limit our thinking so that it may gain in definiteness what it loses in extent4 ,when we limit our thinking in any case to a few tones1--certain colors in certain values1--we come to know those tones so well that we can imagine any one of them vividly1 without seeing it4 ,it is only when we have in mind definite tone-images that we begin to think in tone-relations and rise to the possibilities of imaginative composition in tones4 ,in using the sequences which ,i have described the tones must be carefully mixed and prepared upon the palette and set there in the order of the sequence1 whatever it is4 ,that gives the painter certain colors in certain values4 ,that is to say1 he has a certain number of tones to consider and to use4 ,he takes one of the tones into his brush and gives it a position1 a measure1 and a shape4 ,that done1 he takes another tone and gives to that a position1 measure1 and shape4 ,proceeding in this way he creates a certain relationship of tones1 positions1 measures1 and shapes1 the terms of which relationship are perfectly definite4 ,he repeats what he finds satisfactory4 ,he avoids what he finds unsatisfactory4 ,experimenting in this way1 in such definite terms1 he ought to make a sure and steady progress toward the discovery of what is orderly and beautiful4 ,the use of any particular sequence of values and colors is like the use1 by the musician1 of a well-tuned instrument4 ,it is at once a definition of terms and a source of suggestion and of inspiration4 ,there is nothing occult or sacred about these sequences and combinations of sequences4 ,in using them we are in no way safeguarded against error4 ,using these sequences1 we can produce bad effects of light and of color as well as good ones4 ,whether the results of using these sequences are good or bad depends upon the user--what his thinking amounts to4 ,it will be a grave mistake to regard any of these sequences as recipes for righteousness1 when they are simply modes of thought4 ,they are nothing more than the sections or divisions of a general classification of tones4 ,in using any particular sequence we observe that the same value and color-relations recur repeatedly4 ,that is always desirable from the point of view of ,design4 ,it means ,harmony4 #afa4 ,the beauty of any scheme of values and colors depends1 not only upon the pigment-materials used1 upon the sequence of values and colors chosen and upon the particular tones produced1 but quite as much upon the relative positions and juxtapositions given to the tones1 the quantities or measures in which they are used1 and1 lastly1 the way in which the paint is handled4 ,to find out what tones to use as ground-tones1 what tones to put upon these ground-tones1 and in what quantities or measures1 is a matter of experimental practice and of visual and imaginative discrimination4 ,having defined the word tone and its elements1 value1 color1 and color-intensity1 and having established a general classification of tones to show the possibilities of tone1 ,i must go on to describe what will be orderly in tone-relations4 ,order and ,beauty in tone-relations will be found in ,tone-,harmonies1 ,tone-,balances1 and ,tone-,rhythms4 ,,tone-,,harmony #afb4 ,by ,tone-,harmony ,i mean a relation of likeness in tones4 ,tones are in ,harmony when they resemble one another in all or in certain respects4 ,to be in ,harmony two or more tones must have at least something in common1 either value or color4 ,if they have the same color they may be in the same degree of intensity1 giving a ,harmony of ,intensities4 ,tone-,harmony resolves itself into ,value-,harmony1 ,color-,harmony1 and the ,harmony of ,intensities4 ,the ,harmony of ,intensities lies between tones of the same color1 when they are equally neutralized or neutralized in approximately the same degree4 ,when different colors are neutralized we have the ,harmony of a common neutrality or grayness of color4 #afc4 ,tones may be harmonized on the palette before they are used1 that is to say1 before any positions1 measures1 and shapes are given to them on paper or canvas1 or they may be harmonized after positions1 measures1 and shapes have been given to them4 ,to harmonize tones on the palette1 as to value1 we must bring them approximately to the same value1 with as little change of color as possible4 ,to harmonize tones on the palette as to color we must bring them approximately to the same color1 with as little change of value as possible4 ,if two or more tones have the same color they may be intensified or neutralized until they are brought approximately to the same degree of intensity4 ,the tones of ,red showing a ,harmony of ,intensities would lie on a vertical line drawn through the triangle of ,red in the ,diagram of the ,triangles4 ,as the tone-effect which we produce depends very largely upon the positions1 measures1 and shapes which we give to our tones1 we may not be satisfied with an effect which has been produced with previously prepared and harmonized tones4 ,we may wish to change the effect1 to achieve a still greater ,harmony4 ,given a certain arrangement or composition of tones1 certain tones in certain positions1 measures1 and shapes1 and given the problem to harmonize those tones1 what do we do8 #afd4 ,suppose it is ,value-,harmony which we want2 what is our procedure8 ,wt ,h,lt - ,b ,lt - ,v ,l,lt - ,y ,m - ,,ro ,,hd - ,g ,d - ,o ,,ld - ,,vr ,blk ,here1 let us say1 are the tones of a design1 certain colors in certain values4 ,what shall we do with these tones to bring them into ,value-,harmony8 ,illustration3 ,wt ,h,lt - ,b ,lt - ,v ,l,lt - ,y ,m - ,,ro ,,hd - ,g ,d - ,o ,,ld - ,,vr ,blk ,diagram #f ,for ,value-,harmony we must diminish the range of values toward one value4 ,in the above diagram ,i have shown a diminution of the range of values toward ,high ,light3 this in several degrees4 ,illustration3 ,wt ,h,lt - ,b ,lt - ,v ,l,lt - ,y ,m - ,,ro ,,hd - ,g ,d - ,o ,,ld - ,,vr ,blk ,diagram #g ,following the indications of this diagram1 we pull the colors together toward ,light in one case 7,b71 toward ,middle in another 7,a71 toward ,dark in a third 7,c74 ,as we do this we increase the ,value-,harmony4 ,in reproducing the tones in a diminished range of values1 raising the colors in value or lowering them1 we are not obliged to change the colors except in cases where they become1 possibly1 confounded with ,black or with ,white4 ,it will often happen1 however1 that the intensity of a color has to be diminished when the value is changed4 ,for example1 if ,red ,orange1 in the illustration given1 is in its greatest intensity1 the color may remain unchanged in ,system 8,a10 but its intensity will be1 necessarily1 diminished in ,system 8,b10 or ,system 8,c40 ,see ,diagram of the ,triangles4 ,for the sake of ,value-,harmony we diminish the range of values1 making as little changes of color as possible1 and only those changes of color-intensity which are inevitable4 ,a complete and perfect ,value-,harmony is1 as a rule1 undesirable because it means that all the colors are reduced to one value which gives a monotony of value4 ,approximate ,harmony of ,values is generally sufficient4 ,the range of values is narrowed1 the contrasts are diminished1 and an even tonality is secured4 ,that is all we require1 in most cases1 an approximation to one value4 #afe4 ,suppose it is ,color-,harmony which we want to achieve3 what procedure shall we follow8 ,wt ,b ,v ,y ,r ,g ,o ,blk ,here are certain tones1 certain colors in certain values4 ,what shall we do with these tones to get ,color-,harmony8 ,we must diminish the range of color-contrasts by giving predominance to one color1 either to one of the colors to be harmonized or to some other4 ,that may be done by mixing one color into all our tones4 ,wt ,wt ,b ,v ,v ,,vr ,y ,giving predominance to ,red1 we get3 ,o ,r ,r ,g ,n ,o ,,ro ,blk ,blk ,diagram #h ,the range of color-contrast is in this way diminished to the intervals between ,violet1 ,orange1 and ,neutral4 ,the process1 so far as color is concerned1 disregarding value-relations1 is fully explained in the following diagram3-- ,illustration3 ,diagram #i ,suppose1 instead of giving predominance to ,red1 as in the example above1 we give predominance to ,blue1 taking the same range of colors4 ,wt ,wt ,b ,b ,v ,,bv ,y ,giving predominance to ,blue we get3 ,g ,r ,v ,g ,,gb ,o ,n ,blk ,blk ,diagram #aj ,the range of color-contrast is in this way diminished to the intervals between ,green1 ,violet1 and ,neutral4 ,the process1 so far as color is concerned1 is fully explained in the following diagram3-- ,illustration3 ,diagram #aa ,in the diagrams which ,i have given the predominance is in the measure of one half4 ,that is to say1 the mixtures are half and half1 theoretically speaking4 ,the theoretical result is a range of intermediate colors4 ,the predominance is not necessarily in the measure of one half4 ,it may be in any measure4 ,the presence of ,red or ,blue in all the tones may be hardly noticeable or it may amount to a general redness or blueness in which other colors are distinguished with more or less difficulty4 #aff4 ,suppose it is the harmony of grayness1 a ,harmony of ,neutralization1 which we want4 ,what is the procedure to follow8 ,illustration3 ,diagram #ab ,the procedure is shown in this diagram4 ,we see here what is meant by a ,harmony of ,neutralization1 without changes of value4 ,the neutralization is in the measure of one half in each case4 ,red ,orange and ,green are the only colors which exist in their maximum intensities4 ,their intensities are diminished to the half-point1 without change of value1--from ,,ro to ,,ro in one case1 and from ,g to ,g in the other4 ,the other colors are reduced in their intensities proportionally4 ,the value in each case remains unchanged4 #afg4 ,having considered the methods of getting ,value-,harmony and ,color-,harmony separately1 ,i must now describe the method of getting the combination of ,value-,harmony with the ,harmony of ,neutralization4 ,to do this we must set the colors in positions regarding the ,scale of ,neutral ,values1 which will indicate their several values1 and in each case the degree of intensity4 ,we must then decide whether to neutralize the several tones toward ,black or ,white1 or toward some neutral value between these extremes4 ,illustration3 ,diagram #ac ,this illustrates the method of a neutralization toward ,black in the measures of one quarter1 one half1 and three quarters4 ,illustration3 ,diagram #ad ,this illustrates the method of a neutralization toward ,white in the measures of one third and two thirds4 ,illustration3 ,diagram #ae ,this illustrates the method of a neutralization toward the ,middle ,neutral1 between ,black and ,white1 a neutralization in the measures of one quarter1 one half1 and three quarters4 ,in bringing tones into harmony1 by one or another or all of these various methods1 we must remember that when we have diminished the contrast of value and of color beyond a certain point the result is monotony1 a monotony which may be undesirable4 ,it is easy to get into a state of mind in which we dislike all contrasts4 ,in this state of mind we find no sthetic satisfaction except in monotony4 ,such a state of mind should be avoided4 ,monotony is the ,nirvana of stheticism4 #afh4 ,we may have a ,harmony in the repetition and recurrence of two or more contrasting1 even strongly contrasting1 tones4 ,we may have ,harmony in the repetition and recurrence of a contrast in which there is perhaps no ,harmony4 ,for example3 ,i may repeat the contrast ,orange-,blue any number of times in a certain composition4 ,there is no ,harmony of ,value or of ,color in the contrast1 but in repeating the contrast ,i have the ,harmony of a ,repetition1 just as ,i have a ,harmony in the repetition of a certain line or outline in which there is no order of any kind4 ,the ,harmony lies solely in the repetition or recurrence4 ,in this way ,i may repeat1 at equal intervals all over a certain space1 the various contrasts indicated by the following diagram3-- ,illustration3 ,diagram #af ,there is no ,harmony in the relation of tones here indicated1 but we shall get ,harmony in the repetition of this relation4 ,illustration3 ,diagram #ag ,the ,harmony here indicated will lie in the repetition of certain contrasts in which there is no ,harmony4 ,the ,harmony of a repeated contrast1 or contrasts1 is a very important form of ,tone-,harmony4 ,it means that a certain effect of light due to the juxtaposition or association of certain tones recurs repeatedly1 let us say at equal or approximately equal intervals1 all over a certain space4 ,the result is sure to be harmonious1 no matter how strong the tone-contrasts are in the group or series1 provided that the repetitions are well within the range of vision so that they may be compared1 and the recurrence of the same effect of light appreciated4 ,we must not be too near to the arrangement1 for in that case the contrasts of the repeated group will be more noticeable than the even tonality of the all-over repetition4 ,every even1 all-over effect of light1 no matter what the contrasts are which produce it1 gives us the feeling of ,harmony4 #afi4 ,in such compositions as the one indicated in ,diagram #ag predominance may be given to one tone by having it recur in larger spots in each group or in a greater number of spots1 two or more in each group4 ,in this way1 in a composition of many colors in different values1 predominance may be given to ,middle ,blue or ,light ,orange or ,dark ,blue-,violet1 or any other particular tone4 ,predominance may be given to neutral gray of a certain value1 by having it recur in larger spots or in numerous small spots4 #agj4 ,neutral gray may be made to predominate in another way2 by so composing the tones1 in the group to be repeated1 that they neutralize one another at a certain distance1--the point of view of the observer4 ------------------ ,y ,g ,y ,g ,y ,g ------------------ ,r ,v ,r ,v ,r ,v ------------------ ,y ,g ,y ,g ,y ,g ------------------ ,r ,v ,r ,v ,r ,v ------------------ ,diagram #ah ,in this case ,yellow and ,violet will neutralize one another and ,red will neutralize ,green4 ,the effect of the repetition of these complementary oppositions ought to be1 at a certain distance1 a very lively neutral4 ,it has been the idea of certain painters of our time to subject every tone-impression to analysis1 and to produce the effect of the tone by an arrangement or composition of its elements4 ,many interesting and some beautiful results have been produced in this way4 ,illustration3 ,diagram #ai ,in this case we have a repetition of the triad ,red-,yellow-,blue1 which1 at a certain distance1 ought to produce the effect of a middle neutral4 ,the principle of these arrangements is one of the most important in tone-composition4 #aga4 ,there is another consideration which ought to keep us from any morbid interest in harmonious monotonies1 which ought to reconcile us to contrasts1 even strong contrasts1 and to a great variety in tones4 ,harmony is only one principle of composition in ,design2 we have two others which are equally important1--the principle of ,balance and the principle of ,rhythm4 ,the principles of ,balance and ,rhythm are consistent with the greatest possible contrasts of tone4 ,the tone-contrasts in forms of ,balance and ,rhythm may be strong1 even harsh1 and the appreciation and enjoyment of the ,balance or of the ,rhythm in no degree diminished4 ,we will now proceed to the consideration of ,tone-,balance and ,tone-,rhythm4 ,,tone-,,balance #agb4 ,tones1 simply as tones1 disregarding the positions1 measures1 and shapes which may be given to them1 balance1 when the contrasts which they make with the ground-tone upon which they are placed are equal4 ,we have an indication of such a balance of tones1 simply as tones1 in the following formula3-- ,,ld - ,v -------------------- ,h,lt - ,y ,h,lt - ,y ,two spots of ,high ,light ,yellow occur on a ground-tone of ,low ,dark ,violet4 ,the two spots of ,yellow make equal contrasts with the ground-tone1 and for that reason balance as tones1 no matter what positions1 measures1 and shapes are given to them4 ,the value-contrast is that of the interval of the seventh in the ,scale of ,values2 the color-contrast is that of the interval of the seventh in the ,scale of ,colors4 ,we must assume that the intensities are so adjusted as not to disturb the balance4 ,m - ,v ----------------- ,lt - ,o ,d - ,o ,in this case the values making the contrasts differ4 ,the contrasts are1 nevertheless1 equal because the value-intervals are equivalent intervals4 ,the value difference between ,light and ,middle is equivalent to the value difference between ,dark and ,middle4 ,though the contrasting elements differ1 the contrasts are equal4 ,in this case the contrasting colors are the same and the color-contrasts correspond4 ,we must assume that the intensities are so adjusted as not to disturb the balance4 ,,ld - ,v -------------------- ,l,lt - ,o ,l,lt - ,g ,in this case the contrasting colors differ1 but the contrasts are equal because the color-interval between ,orange and ,violet is the same as the color-interval between ,green and ,violet4 ,in this case the value-contrasts correspond4 ,we must assume here1 as before1 that there is no difference of color-intensity to disturb the balance4 ,d - ,r ------------------ ,,hd - ,o ,,ld - ,v ,in this case the two tones which balance on the ground-tone differ both in value and in color4 ,they balance1 nevertheless1 because both the value and the color-contrasts are of the interval of the third4 ,again we must assume that there is no disparity of intensities to disturb the balance4 #agc4 ,the reader will find the ,diagram of ,values and ,colors 7,no4 #e7 very useful in making calculations for tone-balances1 so far as value-contrasts and color-contrasts are concerned1 leaving out considerations of color-intensity4 ,taking any tone indicated on the ,diagram as a ground-tone1 any tones at equal distances in balancing directions will balance on that ground-tone4 ,illustration3 ,diagram #bj ,the various types of tone-balance are shown in the above diagram4 ,the tones which balance1 one against the other1 on the ground-tone of ,blue-,violet1 are the tones marked by the same number4 ,the value and color-balances being achieved1 the intensities may be adjusted1 increased or diminished1 until the balance is perfect4 #agd4 ,as you increase the color-intensity in any tone it attracts more attention1 and unless you increase the intensity in the opposite tones there will be a disparity which will disturb your balance4 ,when the intensity in any tone is too great1 you can increase the color-contrast or the value-contrast of the opposite tones until the balance is achieved4 #age4 ,up to this point ,i have been speaking of ,tone-,balance in the abstract1 of ,tone-,balance as such4 ,i have spoken of ,tone-,balance as something apart from ,position1 ,measure1 and ,shape-,balance1 as if tones could balance without having any positions1 measures1 or shapes assigned to them4 ,the fact is that a tone does not exist until you give it a position1 a measure1 and a shape4 ,it follows that ,tone-,balance is1 in all cases1 more or less complicated by considerations of position1 measure1 and shape4 #agf4 ,the principle of balance being that equal attractions balance at equal distances and unequal attractions at distances inversely proportional to them1 it follows1 that if the attraction of a tone is increased by quantity1 the attraction of quantity may be balanced against the attraction of contrast4 ,the calculation of such balances may be made on the ,diagram of ,values and ,colors4 ,illustration3 ,diagram #ba ,in this case1 for example1 we have the indication of a possible balance of two parts of ,light ,red and one part of ,dark ,green on a ground-tone of ,middle ,violet1 the difference of contrast in one case making up for a difference of quantity and of contrasting edge in the other4 #agg4 ,so far as ,tone-,balance depends upon positions1 measures1 and shapes1 the problem is the problem of ,position1 ,measure1 and ,shape-,balance1 which we have already considered4 ,given certain tones in certain measures and shapes1 the inversion of the measures and shapes involves an inversion of the tones1 so we have a ,tone-,balance as well as a ,measure and ,shape-,balance4 ,the inversion in any case may be single or double4 ,illustration3 ,diagram #bb ,in this case we have an instance of single inversion1 which gives us a ,symmetrical ,balance1 of tones1 as well as of measures and shapes4 ,illustration3 ,diagram #bc ,in this case we have an instance of double inversion of tones1 as well as of measures and shapes4 #agh4 ,the tones and tone-contrasts on one side of a center or axis are not necessarily the same as those on the other side4 ,we may have a ,tone-,balance in which very different tones and tone-contrasts are opposed to one another4 ,this brings us to the consideration of ,occult ,balance in ,tones1 ,measures1 and ,shapes4 ,a balance of any tones and of any tone-contrasts1 in any measures and in any shapes1 is obtained when the center of tone-attractions is unmistakably indicated1 either by the symmetrical character of the balance or by a symmetrical inclosure which will indicate the center4 ,given any combination of tones1 measures1 and shapes1 and the problem to find the balance-center1 how shall we solve the problem8 ,it cannot very well be done by reasoning4 ,it must be done by visual feeling4 ,the principle of ,balance being clearly understood1 finding the center of any tone-contrasts is a matter of experimental practice in which those persons succeed best who are most sensitive to differences of tone1 and who make the greatest effort to feel the centers and to indicate them accurately4 ,experience and practice are necessary in all cases4 ,illustration3 ,fig4 #bbh ,here1 within this circle1 are the attractions to be balanced4 ,the problem is to find the balance-center1 and to indicate that center by a symmetrical inclosure which will bring the tones1 measures1 and shapes into a ,balance4 ,the center is here indicated by the circle4 ,whether it is correctly indicated is a matter of judgment in which there may be a difference of opinion4 ,there is a center somewhere upon which the attractions are balancing4 ,the question is1 where is it8 ,the illustration which ,i have given is in the terms of the ,scale of ,neutral ,values4 ,differences of color and color-intensity would complicate the problem1 but would not in any way affect the principle involved4 ,i know of no more interesting problem or exercise than this3 to achieve ,tone-,balance where there is no ,tone-,symmetry4 #agi4 ,it will sometimes happen1 that a gradation of tones or measures will draw the eye in a certain direction1 toward the greater contrast1 while a larger mass or measure of tone1 on the other side1 will be holding it back4 ,in such a case we may have a mass balancing a motion4 ,illustration3 ,fig4 #bbi ,in this case the eye is drawn along1 by a gradation of values1 to the right1 toward the edge of greater contrast1 away from a large dark mass of tone in which there is no movement4 ,the tendency of the dark mass is to hold the eye at its center4 ,the problem is to find the balance-center between the motion and the mass4 ,i have done this1 and the balance-center is indicated by the symmetrical outline of the diagram4 #ahj4 ,some shapes hold the eye with peculiar force1 and in such cases the attractions of tone or measure or shape on the other side have to be increased if we are to have a balance4 ,symmetrical shapes have a tendency to hold the eye at centers and on axes4 ,given certain attractions on the other side1 we must be sure that they are sufficient to balance the force of the symmetry in addition to the force of its tone-contrasts1 whatever they are4 ,illustration3 ,fig4 #bcj ,in this case we have an approximate balance in which the force of a symmetry1 with contrasting edges1 on one side1 is balanced by contrasts and certain movements on the other4 ,if ,i should turn down the upper spot on the right1 we would feel a loss of balance due to the turning of two movements1 which combine to make one movement to the right1 into two movements down to the right4 ,if ,i should increase the force of the symmetry1 by filling in the center with black1 it would be necessary either to move the symmetry nearer to the center or to move the opposite attractions away from it4 ,an unstable attitude in the symmetry would have to be counteracted1 in some way1 on the other side4 ,intricate shapes from which the eye cannot easily or quickly escape often hold the eye with a force which must be added to that of their tone-contrasts4 ,illustration3 ,fig4 #bca ,in this case the shape on the right requires a pretty strong dark spot to balance its contrasts and its intricacy4 ,the problem is further complicated when there are1 also1 inclinations1 to the right or to the left1 to be balanced4 ,illustration3 ,fig4 #bcb ,in this case ,i have tried to balance1 on the center of a symmetrical inclosure1 various extensions and inclinations of tone-contrast1 the movement of a convergence1 and the force of a somewhat intricate and unstable symmetry4 ,these occult forms of ,balance are not yet well understood1 and ,i feel considerable hesitation in speaking of them4 ,we have certainly a great deal to learn about them4 ,they are far better understood by the ,chinese and by the ,japanese than by us4 #aha4 ,when any line or spot has a meaning1 when there is any symbolism or representation in it1 it may gain an indefinite force of attraction4 ,this1 however1 is a force of attraction for the mind rather than for the eye4 ,it affects different persons in different measures4 ,the consideration of such attractions1 suggestions1 meanings1 or significations does not belong to ,pure ,design but to ,symbolism or to ,representation4 ,,tone-,,rhythm #ahb4 ,the idea of ,tone-,rhythm is expressed in every regular and perfect gradation of ,tones2 of values1 of colors or of color-intensities1 provided the eye is drawn through the gradation in one direction or in a series or sequence of directions4 ,this happens when there is a greater tone-contrast at one end of the gradation than at the other4 ,when the terminal contrasts are equal there is no reason why the eye should move through the gradation in any particular direction4 ,according to our definition of ,rhythm1 the gradation should be marked in its stages or measures1 and the stages or measures should be regular4 ,that is certainly true1 but in all regular and perfect gradations ,i feel that corresponding changes are taking place in corresponding measures1 and ,i get the same feeling from such a gradation that ,i get from it when it is marked off in equal sections4 ,though the measures in regular and perfect gradations are not marked1 they are1 it seems to me1 felt4 ,they seem sufficiently marked by the regularity and perfection of the gradation1 any irregularity or imperfection being appreciable as a break in the measure4 ,i am inclined1 therefore1 to say of any regular and perfect gradation that it is rhythmical provided the direction of movement is unmistakable4 ,the direction1 as ,i have said1 depends upon the relation of terminal contrasts4 ,the eye is drawn toward the greater contrast1 whatever that is and wherever it is4 ,a few examples will make this clear4 ,m ----------------------------------- ,blk ,,ld ,d ,,hd ,m ,l,lt ,lt ,h,lt ,wt ,in this case we have the gradation of the ,scale of ,values set on a ground-tone of the middle value4 ,here there are two opposed gradations with equal contrasts at the opposite ends4 ,the result is ,balance1 not ,rhythm4 ,wt ----------------------------------- ,blk ,,ld ,d ,,hd ,m ,l,lt ,lt ,h,lt ,wt ,in this case we have a gradation of values beginning with ,white on ,white1 no contrast at all1 and reaching ultimately the contrast of ,black and ,white4 ,the eye is drawn through the tones of this gradation in the direction of this contrast1 that is to say1 from right to left4 ,it is a clear case of ,rhythm4 ,if1 instead of white1 we had black1 as a ground-tone1 the movement of the rhythm would be in the opposite direction1--from left to right4 ,wt ,h,lt ,lt ,l,lt ,m ,,hd ,d ,,ld ,blk ------------------------------------- ,blk ,,ld ,d ,,hd ,m ,l,lt ,lt ,h,lt ,wt ,in this case1 as in the first1 we have equally great contrasts at the ends and no contrast at the middle4 ,the result is ,balance1 not ,rhythm4 ,v ------------------- ,y ,,yg ,g ,,gb ,b ,,bv ,in this case1 disregarding possible differences of value and color-intensities1 there will be a color-rhythm proceeding from right to left4 ,the contrast to which the eye will be drawn is the color-contrast of ,yellow and ,violet4 ,,ld-,v ------------------------------------- ,d-,y ,,hd-,,yg ,m-,g ,l,lt-,,gb ,lt-,b ,h,lt-,,bv ,in this case1 disregarding possible differences of intensity1 there will be a rhythm of color moving from right to left and a rhythm of values moving from left to right4 ,assuming that we are equally attracted by corresponding value and color-contrasts1 these two rhythms1 when produced1 will neutralize one another and we shall have an illustration of ,tone-,balance rather than ,tone-,rhythm4 ,if corresponding color and value-contrasts are not equally attractive we shall have an unequal tug-of-war between the two rhythms4 ,,ld-,v ------------------------------------- ,h,lt-,y ,lt-,,yg ,l,lt-,g ,m-,,gb ,,hd-,b ,d-,,bv ,in this case we have two rhythms1 one of values and one of colors1 in a ,harmony of ,direction4 ,the direction of movement will be from right to left4 ,h,lt-,y ---------------------------------------- --------------- ,h,lt-,y ,h,lt-,y ,h,lt-,y_/ ,h,lt-,y ,h,lt-,y_/ ,h,lt-,y ,in this case we have no change of color and no change of value1 but a rhythm of the intensities of one color1 in one value4 ,the movement will be from right to left4 ,the ground-tone might be ,neutral ,high ,light1 the zero-intensity of ,yellow4 ,that would not change the direction of the movement4 ,,ld-,y ---------------------------------------- --------- ,h,lt-,y ,lt-,y ,l,lt-,y_/ ,m-,y ,,hd-,y_/ ,d-,y ,in this case ,i have indicated a combined movement of values and color-intensities4 ,the direction of the movement will be from right to left4 ,the tone-rhythms which ,i have described are based upon the repetition at regular intervals of a certain change of value1 of color or of color-intensity4 ,we have ,harmony1 of course1 in the repetition of equal changes1 though the changes are not the same changes4 ,the change of value from ,middle to ,low ,light is equal to the change from ,low ,light to ,light1 though these changes are not the same changes4 ,the ,harmony is1 therefore1 the ,harmony of equivalent contrasts which are not the same contrasts4 #ahc4 ,we have more or less movement in every composition of tones which is unbalanced1 in which the eye is not held between equivalent attractions1 either upon a vertical axis or upon a center4 ,in all such cases1 of tones unbalanced1 the movement is in the direction of the greatest contrast4 ,unless the movement is regular and marked in its measures1 as ,i think it is in all regular and perfect gradations1 the movement is not rhythmical4 ,we get ,rhythm1 however1 in the repetition of the movement1 whatever it is1 in equal or lawfully varying measures1 provided the direction of the movement remains the same or changes regularly or gradually4 ,if the line of the movement is up-to-the-right forty-five degrees we have rhythm in the repetition of the movement at equal or lawfully varying intervals1 without changes of direction2 but we should have ,rhythm1 also1 if the direction of the movement1 in its repetitions1 were changed1 regularly or gradually2 if1 for example1 the direction were changed first from up-right forty-five degrees to up-right forty degrees1 then to up-right thirty-five degrees1 then to up-right thirty degrees1 this at equal or at lawfully varying intervals4 ,in this way the movement of the composition repeated may be carried on and gradually developed in the movement of the series4 ,a reference to ,fig4 #afa1 p4 #id1 and to ,fig4 #aai1 p4 #fh1 will help the reader to understand these statements4 #ahd4 ,when any unbalanced composition of tones is singly inverted upon a vertical axis and the movement of the composition follows the axis1 either up or down1 and this movement1 up or down1 is repeated1 up or down1 we get forms of ,tone-,rhythm which are also forms of ,symmetrical ,balance4 ,in the inversions and repetitions of the tone-composition we have ,tone-,harmony4 ,as the tones in the repeated composition have certain positions1 measures1 and shapes1 the ,harmony1 the ,balance1 and the ,rhythm are of ,positions1 ,measures1 and ,shapes as well as of ,tones2 so we get the combination of all the terms of ,design in all the three modes of ,design4 ,,composition ,,three ,,general ,,rules #ahe4 ,it is quite impossible for me1 in this discussion of terms and principles1 to indicate1 in any measure1 the possibilities of composition1 in lines and spots of paint1 in tones1 measures1 and shapes4 ,this is in no sense a ,book of ,designs4 ,all ,i have undertaken to do is to give a few very simple examples and to indicate the kind of reasoning to be followed1 recommending the same kind of reasoning in all cases4 ,there are three general rules1 however1 which ,i must state4 ,first4 ,given a certain outline and certain tones1 measures1 and shapes to be put into it1 it is the ,problem of ,pure ,design to do the best we can1 getting as many connections making unity as possible4 ,the process is one of experimenting1 observing1 comparing1 judging1 arranging and rearranging1 taking no end of time and pains to achieve ,order1 the utmost possible ,order1 if possible the ,beautiful4 ,second4 ,when only an outline is given and we can put into it lines and spots of paint1--tones1 measures1 and shapes1--ad libitum1 we must be sure that in the addition and multiplication of features we do not get less ,order than we had in the simple outline with which we started1 when it had nothing in it4 ,as we proceed to add features we must be sure that we are not diminishing the order of the composition as a whole4 ,if the composition as a whole is orderly1 we do not want to make it less so by cutting it up and introducing additional attractions which may be disorderly and confusing4 ,it may be harder to achieve ,order with a greater number and variety of terms4 ,we may deserve credit for overcoming this difficulty1 but it is a difficulty which confronts us only when the terms are given and we have to make the best of them4 ,when no terms are given1 only a perfectly orderly outline1 we should hesitate before we put anything into it4 ,if we add anything we must be sure that it does not diminish1 in the slightest degree1 the order we had before1 when we had nothing but the outline4 ,the order of the whole must never be diminished4 ,third4 ,when we have an outline with certain tones1 measures1 and shapes in it1 the question is3 whether we can increase the order by adding other tones1 other measures1 or other shapes4 ,illustration3 ,fig4 #bcc ,arrangement 8a0 is less orderly than arrangement 8b10 so ,i have acted wisely in adding the other outlines4 ,illustration3 ,fig4 #bcd ,in this case1 however1 ,i have added features without achieving any increase of ,order in the composition4 ,the order is less than it was before4 ,the additions have no interest from the point of view of ,pure ,design4 ,i may add features for the sake of variety or novelty1 to give a change of feeling1 a new sensation1 but such motives are not the motives of ,pure ,design4 ,in ,pure ,design our motive is1 always1 to achieve ,order1 in the hope that in so doing we may achieve a supreme instance of it which will be beautiful4 ,illustration3 ,fig4 #bce ,consider these illustrations4 ,arrangement 8b0 is more orderly than arrangement 8a10 so ,i am justified in making the additions4 ,the additions have brought occult balance into the composition with ,direction and ,interval-,harmony4 ,arrangement 8c0 is less orderly than 8b10 less orderly than 8a40 ,it has1 therefore1 no value for us4 ,there is no merit in the multiplication of features which it exhibits4 ,the surface is 8enriched0 at the expense of ,direction-,harmony1 ,interval-,harmony1 and ,shape-,harmony4 ,there may be an approximation to an occult balance in arrangement 8c10 but you cannot feel it unmistakably as you do in 8b40 ,its value is1 therefore1 less4 #ahf4 ,i object to the word 8decoration10 as commonly used by designers1 because it implies that additions are likely to be improvements1 that to multiply features1 to enrich surfaces1 is worth while or desirable4 ,the fact is1 that additions are1 as a rule1 to be avoided4 ,there is no merit in the mere multiplication of features4 ,it is a mistake4 ,the rule of ,pure ,design1 and it is the rule for all ,design1 is simplification rather than complication4 ,as designers we ought to avoid additions1 if possible4 ,we ought to make them only when in so doing we are able to increase the order of the whole4 ,we make additions1 indeed1 to achieve the greater simplicity of ,order1 and for no other reason4 ,our object in all cases is to achieve ,order1 if possible a supreme instance of ,order which will be beautiful4 ,we aim at ,order and hope for ,beauty4 ,,the ,,study ,,of ,,order ,,in ,,nature ,,and ,,in ,,works ,,of ,,art #ahg4 ,in connection with the practice of ,pure ,design1 as ,i have described it1--the composition and arrangement of lines and spots of paint2 of tones1 measures1 and shapes3 this in the modes of ,harmony1 ,balance1 and ,rhythm1 for the sake of ,order and in the hope of ,beauty1--the student should take up the study of ,order in its three modes1 as revealed in ,nature and achieved in ,works of ,art4 #ahh4 ,the method of study should be a combination of analysis with synthetic reproduction4 ,taking any instance of ,order1 whether in ,nature or in some work of ,art1 the first thing to do is to consider its terms1--its positions1 its lines1 its areas1 its measure and space-relations1 its tones and tone-relations1--bringing every element to separate and exact definition4 ,the next thing to do is to note every occurrence of ,harmony1 of ,balance1 of ,rhythm1--every connection making for consistency1 unity1 ,order4 ,in that way we shall get an exact knowledge of the case4 ,we shall know all the facts1 so far as the terms and the principles of ,design are concerned4 ,that is what ,i mean by analysis4 ,by a synthetic reproduction ,i mean a reproduction of the effect or design1 whatever it is1 following the images which we have in mind as the result of our analysis4 ,the reproduction should be made without reference to the effect or design which has been analyzed4 ,there should be no direct imitation1 no copying4 ,we must not depend so much upon the memory as upon the imagination4 ,having reproduced the effect or design in this way1 following the suggestions of the imagination1 the reproduction should be brought into comparison with the effect or design reproduced and the differences noted4 ,differences should be carefully observed and the previous analysis should be reviewed and reconsidered4 ,when this is done another attempt at reproduction should be made4 ,this process should be repeated until the effect or design is thoroughly understood and imaginatively grasped4 ,the evidence of understanding and comprehension will be seen in the reproduction which is made1 which ought to have an essential but not a literal correspondence with the original4 ,analysis should precede2 synthesis should follow4 ,i hope1 in another book or books1 to be published later1 to give some examples of ,order in natural objects or effects1 also examples of ,order in ,works of ,art1 with a careful analysis of each one1 showing how the points1 lines1 and areas1 the measure and the space-relations1 the tones and tone-relations come together in the forms of ,harmony1 ,balance1 and ,rhythm1 in the modes of ,order1 in instances of ,beauty4 ,in the mean time1 as the methods of analytic study and of synthetic practice are clearly indicated in the preceding pages1 the student who has taken pains to understand what he has read will find himself well prepared for the work4 ,he can take up the study of ,order in ,nature and of ,design in ,works of ,art without further assistance4 ,,conclusion #ahi4 ,it does not follow1 even when our minds1 in consequence of the study and the practice which ,i have described1 are richly stored with the terms and the motives of ,design1 that we shall produce anything important or remarkable4 ,important work comes only from important people4 ,what we accomplish1 at best1 is merely the measure and expression of our own personalities4 ,nevertheless1 though we may not be able to produce anything important1 it is something to appreciate and enjoy what is achieved by others4 ,if our studies and our work bring us to the point of visual discrimination1 to sthetic appreciation and enjoyment1 and no farther1 we are distinguished among men4 ,the rarest thing in the world is creative genius1 the faculty which creates great works4 ,next to that comes the faculty of appreciation4 ,that1 too1 is rare4 ,we must not believe that appreciation is easy4 ,it is true that the recognition of ,order is instinctive and spontaneous1 but untrained people recognize it only in a few simple and obvious forms4 ,order in its higher forms--the order of a great number and variety of terms and of different principles in combination--lies altogether beyond the appreciation of untrained people4 ,it is only as we are trained1 exercised1 and practiced in the use of terms and in following principles that we rise to the appreciation of great achievements4 ,the sense of order1 which we all have1 in a measure1 needs to be exercised and developed4 ,the spontaneity of undeveloped faculty does not count for much4 ,it carries us only a little way4 ,let no one believe that without study and practice in ,design he can recognize and appreciate what is best in ,design4 ,appreciation and enjoyment are the rewards of hard thinking with hard work4 ,in order to appreciate the masterpiece we must have some knowledge of the terms which the artist has used and the principles which he has followed4 ,we know the terms only when we have ourselves used them1 and the principles when we have tried to follow them4 ,the reason why the appreciation of excellence in speech and in writing is so widespread is due to the fact that we all speak and write1 constantly1 and try1 so many of us1 to speak and write well4 ,the reason why there is so little appreciation of excellence in other forms of art is due to the fact that the terms are not in general use and the principles are not understood1 as they should be1 in the light of personal experience and effort4 ,it is for this reason that ,i am anxious to see the teaching and practice of ,design introduced into the schools1 public and private1 everywhere1 and into our colleges as well as our schools4 ,i have no idea that many able designers will be produced1 but what ,i expect1 as a result of this teaching1 is a more general understanding of ,design1 more interest in it1 and more appreciation and enjoyment of its achievements4 ,among the many who will appreciate and enjoy will be found the few who will create and produce4 ,the purpose of what is called art-teaching should be the production1 not of objects1 but of faculties1--the faculties which being exercised will produce objects of ,art1 naturally1 inevitably4 ,instead of trying to teach people to produce ,art1 which is absurd and impossible1 we must give them a training which will induce visual sensitiveness with sthetic discrimination1 an interest in the tones1 measures1 and shapes of things1 the perception and appreciation of ,order1 the sense of ,beauty4 ,in these faculties we have the causes of ,art4 ,inducing the causes1 ,art will follow as a matter of course4 ,in exercising and developing the faculties which ,i have named1 which naturally and inevitably produce ,art1 we are doing all that can be done by teaching4 ,there is no better training for the visual and sthetic faculties than is found in the practice of ,pure ,design1 inducing1 as it does1 discrimination in tones1 measures1 and shapes1 and the appreciation of what is orderly and beautiful4 ,the result of the practice will be a wide spread of visual and sthetic faculty which will have1 as its natural and inevitable result1 the appreciation and the production of ,works of ,art4 ,our object1 then1 in the study and practice of ,pure ,design is1 not so much the production of ,works of ,art1 as it is to induce in ourselves the art-loving and art-producing faculties4 ,with these faculties we shall be able to discover ,order and ,beauty everywhere1 and life will be happier and better worth living1 whether we produce ,works of ,art1 ourselves1 or not4 ,we shall have an impulse which will lead us to produce ,works of ,art if we can4 ,at the same time we shall have the judgment which will tell us whether what we have done is or is not beautiful4 ,,paragraph ,,index #a1 p4 #a4 ,the ,meaning of ,design4 #b1 p4 #a4 ,the ,order of ,harmony4 #c1 p4 #a4 ,the ,order of ,balance4 #d1 p4 #b4 ,the ,order of ,rhythm4 #e1 p4 #b4 ,relations of ,harmony1 ,balance1 and ,rhythm4 #f1 p4 #d4 ,beauty a supreme instance of ,order4 #g1 p4 #d4 ,the ,arts as different modes of ,expression4 #h1 p4 #e4 ,drawing and ,painting4 #i1 p4 #e4 ,two modes of ,drawing and ,painting4 #aj1 p4 #e4 ,pure ,design4 #aa1 p4 #f4 ,applied ,design4 #ab1 p4 #g4 ,representation4 #ac1 p4 #g4 ,representation in ,forms of ,design4 #ad1 p4 #i4 ,the ,definition of ,positions4 #ae1 p4 #i4 ,the ,relation of ,directions and ,distances4 #af1 p4 #aj4 ,directions defined4 #ag1 p4 #aa4 ,distances defined4 #ah1 p4 #aa4 ,positions determined by ,triangulations4 #ai1 p4 #aa4 ,intervals4 #bj1 p4 #ab4 ,scale in ,relations of ,position4 #ba1 p4 #ab4 ,harmony of ,positions4 #bb1 p4 #ab4 ,harmony of ,directions4 #bc1 p4 #ac4 ,harmony of ,distances4 #bd1 p4 #ad4 ,harmony of ,intervals4 #be1 p4 #af4 ,intervals in any series of ,positions4 #bf1 p4 #ag4 ,positions and their possibilities4 #bg1 p4 #ag4 ,balance of opposite ,directions4 #bh1 p4 #ag4 ,balance of ,distances in opposite ,directions4 #bi1 p4 #ah4 ,balance of ,directions not opposite4 #cj1 p4 #ah4 ,balance of ,distances in ,directions not opposite4 #ca1 p4 #ai4 ,positions in ,balance4 #cb1 p4 #ai4 ,stable equilibrium of vertical and horizontal directions4 #cc1 p4 #bj4 ,symmetry defined4 #cd1 p4 #ba4 ,the central axis should predominate in symmetrical ,balances4 #ce1 p4 #bb4 ,balance in ,relations of ,position1 when inverted4 #cf1 p4 #bb4 ,finding the center of equilibrium in unbalanced relations of position4 ,indication of centers by symmetrical inclosures4 #cg1 p4 #bd4 ,tendency of symmetrical inclosures1 when sufficiently attractive1 to prevent movement4 #ch1 p4 #be4 ,how unstable equilibrium suggests movement4 #ci1 p4 #bf4 ,rhythmic movement in a gradual increase in the number of attractions through a series of visual angles4 #dj1 p4 #bg4 ,the possibilities of rhythmic movement in relations of position4 #da1 p4 #bg4 ,balanced attractions at equal intervals give no movement1 consequently no ,rhythm4 #db1 p4 #bh4 ,the gradual increase of attractions in a series of visual angles1 as produced by gradual changes of scale1 causes rhythmic movement4 #dc1 p4 #bh4 ,how unbalanced groups of positions being repeated at equal intervals produce rhythmic movement4 #dd1 p4 #bi4 ,rhythmic movements produced by the repetition of unbalanced relations of position and by a gradual diminution of scale4 #de1 p4 #cj4 ,rhythmic movements produced by the repetition of a balanced relation of positions with a gradual diminution of intervals1 causing a gradual increase of attractions through a series of visual angles4 #df1 p4 #cj4 ,rhythmic movements produced by the repetition of a balanced relation of positions with diminution of intervals and of scale4 #dg1 p4 #ca4 ,rhythmic movements produced by the repetition of an unbalanced relation of positions with a crowding due to gradual diminution of intervals4 #dh1 p4 #ca4 ,rhythmic movements produced by the repetition of an unbalanced relation of positions with a diminution of measure in the intervals and of scale in the groups4 ,the combination of two or more rhythms4 #di1 p4 #cb4 ,the combination of two or more rhythms4 #ej1 p4 #cb4 ,relations of position in different attitudes4 #ea1 p4 #cc4 ,principal ,attitudes4 #eb1 p4 #cd4 ,harmony in ,attitudes4 #ec1 p4 #ce4 ,harmony in the repetition of any relation of attitudes4 #ed1 p4 #ce4 ,balance in ,attitudes4 #ee1 p4 #cf4 ,rhythm in ,attitudes4 #ef1 p4 #cg4 ,the ,line4 #eg1 p4 #cg4 ,changes of ,direction in a line4 ,angles4 #eh1 p4 #ch4 ,gradual changes of ,direction in a line4 ,curves4 #ei1 p4 #da4 ,curves regarded as compositions of circular arcs4 #fj1 p4 #db4 ,differences of scale in lines4 #fa1 p4 #db4 ,differences of attractive force in lines4 #fb1 p4 #dd4 ,harmony of ,direction in lines4 #fc1 p4 #dd4 ,harmony of ,angles in lines4 #fd1 p4 #de4 ,harmony in ,legs of ,angles4 #fe1 p4 #de4 ,harmony in ,curvatures4 #ff1 p4 #df4 ,harmony in ,arcs when they have the same radius4 #fg1 p4 #df4 ,harmony in ,arcs when they have the same angle4 #fh1 p4 #dg4 ,linear ,progressions4 #fi1 p4 #dg4 ,variations of scale in ,linear ,progressions4 #gj1 p4 #dh4 ,changes of ,direction in ,linear ,progressions4 #ga1 p4 #di4 ,inversions in ,linear ,progressions4 #gb1 p4 #ej4 ,balance in a ,line4 #gc1 p4 #ea4 ,appreciation of ,balance in a line depends very much on its attitude4 #gd1 p4 #eb4 ,balance of ,inclinations in a line4 #ge1 p4 #ed4 ,finding the center of equilibrium of a line and indicating that center by a symmetrical inclosure4 #gf1 p4 #ef4 ,rhythm in a ,line4 #gg1 p4 #ef4 ,rhythm requires more than movement4 ,the movement must be in regular and marked measures4 #gh1 p4 #eg4 ,the number of repetitions required in a ,rhythm4 #gi1 p4 #eg4 ,contrary movements in ,rhythms4 #hj1 p4 #eh4 ,regular alternations in space not necessarily rhythmical4 ,that depends upon the character of the motive4 #ha1 p4 #ei4 ,repetition and alternation without ,rhythm4 #hb1 p4 #ei4 ,rhythm due to gradation of scale4 #hc1 p4 #fj4 ,rhythm due to the gradual increase in the number of attractions from measure to measure4 #hd1 p4 #fa4 ,rhythm in ,spiral ,concentrations4 #he1 p4 #fc4 ,direct and ,contrary ,motion in ,spiral lines4 #hf1 p4 #fd4 ,the ,balance of corresponding but opposed ,rhythms4 #hg1 p4 #fd4 ,lines in different ,attitudes4 #hh1 p4 #fe4 ,harmony in ,attitudes of lines4 #hi1 p4 #ff4 ,harmony in the repetition of any relation of attitudes4 #ij1 p4 #ff4 ,balance in ,attitudes of ,lines4 #ia1 p4 #fg4 ,rhythm in ,attitudes of ,lines4 #ib1 p4 #fh4 ,recapitulation4 #ic1 p4 #fh4 ,the ,composition of ,lines4 #id1 p4 #fi4 ,harmony in the ,composition of ,lines4 #ie1 p4 #gj4 ,measure-,harmony of ratios and of proportions4 #if1 p4 #gj4 ,elements making for ,harmony in dissimilar lines4 #ig1 p4 #gc4 ,balance in the ,composition of ,lines4 #ih1 p4 #gd4 ,shape-,harmony without ,measure-,harmony4 #ii1 p4 #gd4 ,measure-,balance without ,shape-,balance4 #ajj1 p4 #gf4 ,the centers of equilibrium in mere measure-balances should be indicated by symmetrical inclosures4 #aja1 p4 #gf4 ,balance of ,inclinations4 #ajb1 p4 #gi4 ,measure-,rhythm in the ,composition of ,lines4 #ajc1 p4 #hj4 ,the combination of various types of rhythmic movement4 #ajd1 p4 #hf4 ,rhythm not necessarily inconsistent with ,balance4 #aje1 p4 #hi4 ,the ,composition of various lines4 #ajf1 p4 #if4 ,outlines4 #ajg1 p4 #if4 ,harmony1 ,balance1 and ,rhythm in ,outlines4 #ajh1 p4 #ajb4 ,interior ,dimensions of an ,outline4 #aji1 p4 #ajb4 ,harmony of ,interior ,dimensions4 #aaj1 p4 #ajd4 ,convergence as a cause of movement4 #aaa1 p4 #ajh4 ,rhythm of ,convergence4 ,contrary ,motion in ,convergences4 #aab1 p4 #aji4 ,changes of ,direction in ,convergences4 #aac1 p4 #aaj4 ,ideas of association in rhythmic movements4 ,rhythm in changes of shape4 #aad1 p4 #aab4 ,outlines in different ,attitudes4 #aae1 p4 #aab4 ,harmony1 ,balance1 and ,rhythm in the ,attitudes of ,outlines4 #aaf1 p4 #aab4 ,the ,composition of ,outlines4 #aag1 p4 #abd4 ,the purpose of designing to induce the sense of ,beauty which is the cause of all that is fine in ,design4 #aah1 p4 #abe4 ,areas4 #aai1 p4 #abe4 ,linear ,areas4 #abj1 p4 #abe4 ,changes of width-measure in ,linear ,progressions4 #aba1 p4 #abi4 ,areas defined by outlines1 and also by tone-contrasts4 #abb1 p4 #aca4 ,the ,composition of ,areas as defined by tone-contrasts4 #abc1 p4 #aca4 ,difference between drawing and painting1 if there is any4 #abd1 p4 #aca4 ,definition of the word ,tone4 #abe1 p4 #acb4 ,tone-,analysis4 #abf1 p4 #acb4 ,the study of ,tones and ,tone-,relations4 #abg1 p4 #acc4 ,pigment-,materials4 #abh1 p4 #acc4 ,the ,scale of ,neutral ,values4 #abi1 p4 #acd4 ,contrasts of the ,scale of ,values4 #acj1 p4 #ace4 ,definition of ,value-,relations4 #aca1 p4 #acf4 ,scales of ,colors in ,different ,values4 #acb1 p4 #acg4 ,definition of the terms used to describe different ,colors4 #acc1 p4 #ach4 ,color-,intensities found in different values4 #acd1 p4 #aci4 ,value-,relation of different ,colors shown in the ,spectrum4 #ace1 p4 #aci4 ,the ,spectrum a sequence not a circuit2 a circuit in pigments only4 #acf1 p4 #adj4 ,the ,complementaries4 #acg1 p4 #adj4 ,a ,general ,classification of ,tones as to ,value1 ,color1 ,color-,intensity1 and ,color-,neutralization4 #ach1 p4 #ada4 ,the distinction between ,color-,intensities and ,color-,neutralizations4 #aci1 p4 #ada4 ,definition of particular tones4 #adj1 p4 #ada4 ,theoretical character of our classification of tones4 #ada1 p4 #adb4 ,definition of particular tone-relations4 #adb1 p4 #adc4 ,sequences of ,values and ,colors4 #adc1 p4 #adc4 ,the ,sequence of ,neutral ,values4 #add1 p4 #add4 ,vertical ,sequences4 #ade1 p4 #add4 ,horizontal ,sequences4 #adf1 p4 #add4 ,diagonal ,sequences4 #adg1 p4 #ade4 ,diagonal ,sequences of the ,right and ,left ,modes4 #adh1 p4 #adf4 ,different ,intervals in ,diagonal ,sequences4 #adi1 p4 #adf4 ,peculiar value of the ,diagonal ,sequence of ,colors at the interval of the ,fifth4 ,the four ,triads4 #aej1 p4 #adg4 ,sequences in which a certain relation of intervals is repeated4 #aea1 p4 #adg4 ,the combination of two or more ,vertical ,sequences4 #aeb1 p4 #adh4 ,the combination of two or more ,horizontal ,sequences4 #aec1 p4 #adi4 ,the ,combination of ,diagonal ,sequences of the same and different modes4 #aed1 p4 #aea4 ,alternations in ,vertical ,sequences4 #aee1 p4 #aea4 ,alternations in ,horizontal ,sequences4 #aef1 p4 #aea4 ,alternations of different value-intervals in color-sequences of equal intervals4 #aeg1 p4 #aec4 ,alternations of different color-intervals in value-sequences of equal intervals4 ,particular ,sequences recommended4 #aeh1 p4 #aec4 ,possibility of extending the classification of values and colors to a scale of seventeen values1 including ,black and ,white4 #aei1 p4 #aed4 ,the method of using the ,sequences described4 ,possible extension of the sequence by mixtures4 #afj1 p4 #afe4 ,the value of the sequences found in the more definite thinking which they make possible1 and in the ,harmony of repetitions4 #afa1 p4 #aef4 ,considerations of position1 measure1 and shape in tone-relations4 #afb1 p4 #aeh4 ,tone-,harmony4 #afc1 p4 #aeh4 ,tones harmonized on the palette or by changes in the design4 #afd1 p4 #aei4 ,value-,harmony4 #afe1 p4 #afa4 ,color-,harmony4 #aff1 p4 #afc4 ,harmony of proportional neutralizations4 #afg1 p4 #afd4 ,value-,harmony and the ,harmony of ,proportional ,neutralizations combined4 #afh1 p4 #afg4 ,harmony in the repetition of a certain relation of tones not in itself harmonious4 #afi1 p4 #agj4 ,harmony of a predominant tone in the repetition of a certain relation of tones4 #agj1 p4 #agj4 ,the ,harmony of a grayness induced by the opposition of tones which neutralize one another in the sense of vision4 #aga1 p4 #aga4 ,strong contrasts1 inconsistent with ,harmony1 may be perfectly consistent with both ,balance and ,rhythm4 #agb1 p4 #agb4 ,tone-,balance in the abstract4 #agc1 p4 #agc4 ,use of the ,diagram of ,values and ,colors for the calculation of tone-balances4 #agd1 p4 #agd4 ,element of ,color-,intensity in tone-balances4 #age1 p4 #agd4 ,tone-,balances always connected with ,measure and ,shape-,balances4 #agf1 p4 #age4 ,tone and ,measure-,balance4 #agg1 p4 #age4 ,tone-,relations in ,single and in ,double ,inversions4 #agh1 p4 #agf4 ,occult ,tone1 ,measure and ,shape-,balances4 #agi1 p4 #agh4 ,further considerations on the same subject4 #ahj1 p4 #agh4 ,further considerations on the same subject4 #aha1 p4 #aha4 ,the effect of ,representations in ,tone-,balances4 #ahb1 p4 #ahb4 ,tone-,rhythm4 #ahc1 p4 #ahd4 ,attitudes in ,tone-,rhythms4 #ahd1 p4 #ahe4 ,inversions in ,tone-,rhythms4 #ahe1 p4 #ahf4 ,composition of tones1 measures1 and shapes4 ,three general rules4 #ahf1 p4 #ahh4 ,design and 8,decoration40 #ahg1 p4 #aij4 ,the study of ,order in ,nature and in ,works of ,art4 #ahh1 p4 #aij4 ,method of study by ,analysis with ,synthetic ,performance4 #ahi1 p4 #aib4 ,conclusion4 ,the practice of ,pure ,design4 ,its purpose and end4 ,the ,riverside ,press ,,cambridge ,,massachusetts ,u ,s ,a