,transcrib] ,note ,text emphasis is d5ot$ z ,italics & ,bold4 ,,! ,,dry ,,collodion ,,process4 ,,by ,,*>les ,a4 ,,long4 ,,?ird ,,edition4 ,,publi%$ ,,by ,,bl& ,,long1 ,,opticians1 ,,& ,,photographic ,,in/rum5t ,,mak]s ,,to ,,h] ,,maje/y1 ,illu/ration ,,by ,,appo9tm5t4 #aec1 ,,fleet ,,/reet1 ,,london4 ,,ent]$ ,,at ,,/ation]s' ,,hall1 ,price #as4 ,p] ,po/ #as4 #a;d4 #aheh4 ,h4 ,,silv]lock1 ,,pr9t]1 ,,w>drobe ,,t]race1 ,,doctors' ,,commons1 ,,london1 ,e4,c4 ,,preface ,,to ,,fir/ ,,edition4 ,! foll[+ pages %all be devot$ to ! description ( a process on ,dry ,collodion1 :i* ,i believe to be at once simple & effective4 ,! exp]im5ts connect$ ) ! p]fection ( ?is process h occupi$ my leisure "t = ! space ( two ye>s or m1 & h be5 conduct$ ) all ! c>e ( :i* ,i 0 ma/]4 ,! con/ant repetition ( !m enables me to say1 t :oev] w foll[ dilig5tly ! process /ep by /ep1 z detail$ 9 ?is ,pamphlet1 mu/ succe$ 9 produc+ pictures 9 e way su* z c\ld be requir$ by ! mo/ exact+ critic4 ,! process is simple1 clean1 & exp$iti\s2 & ! result+ ,negatives possess ! exquisite s(tness ( ,album51 ! brilliancy ( ! wet ,collodion1 & ! f9e arti/ic texture ( ! ,pap] process4 ,to dis>m criticism1 & to make peace ) my fell[ lab\r]s 9 ! art1 ,i wi% x to be und]/ood t ,i d n claim ! use ( ,collodion1 ( ,gelat9e1 ( ,metagelat9e1 or ( any ( ! ,*emicals us$ 9 ! process--mo/ ( ^! h be5 employ$ by o!rs 9 v>i\s ways2 ,i m]ely res]ve to myself ! pleasure ( plac+ 9 ! h&s ( ,photograph]s a def9ite & simple plan by :i* pictures may be tak5 on ,dry ,collodion4 ,,*>les ,a4 ,,long4 ,june #bj1 #aheg4 ,,preface ,,to ,,second ,,edition4 ,9 issu+ a second edition ( ! ,dry ,collodion process1 ,i w\ld take occasion to rem>k1 t aft] "s mon?s' practical work+1 x has n be5 f\nd necess>y to make any mat]ial alt]ation 9 ! process2 success has usually att5d$ ! adoption ( x1 & 9 ^? cases :]e good pictures h n result$1 ! failure has always be5 trac$ to ! use ( a ,collodion n suit$ to ! process4 ,i _c all[ ?is opportunity to pass1 )\t ?ank+ ^? g5tlem5 ^: op9ions possess weight 9 matt]s photographic1 = ! v c&id mann] 9 :i* !y h te/$ ! capabilities ( my process1 & = ! v flatt]+ te/imony !y h borne to its effici5cy1 simplicity1 & c]ta9ty4 ,,*>les ,a4 ,,long4 #aec1 ,fleet ,/reet1 ,septemb] #aheg4 ,,preface ,,to ,,?ird ,,edition4 ,! process describ$ 9 ! foll[+ pages has n[ be5 9 use = twelve mon?s1 & ,i h mu* satisfaction 9 /at+ t x has1 9 almo/ e in/ance :]e x has be5 adopt$ & c>ri$ out ) c>e & att5tion1 yield$ results :i* leave sc>cely any?+ to be desir$4 ,! pres5t ,edition might m prop]ly be t]m$ a repr9t1 z ! alt]ations 9 ! text d n ext5d to m ?an a few matt]s ( detail1 :i* exp]i5ce has %ewn to be desirable1 ! pr9ciples ( ! process rema9+ undi/urb$4 ,,*>les ,a4 ,,long4 #aec1 ,fleet ,/reet1 ,june #aheh4 ,,op9ions ,,( ,,! ,,press4 ,f ! ,a!num4 ,we h n m]ely exam9$ ! description giv5 by ,mr4 ,long ( 8 dry collodion process1 b we h witness$ ! results obta9$ by foll[+ c>efully 8 directions4 ,x appe>s to u t1 by x1 a collodion plate may be prep>$ at home1 wrapp$ 9 pap]1 & pack$ 9 portmanteau2 t we may j\rney to ,rome or ,v5ice1 !n place our plate 9 ! cam]a obscura1 & all[ x = a few m9utes to receive ! lum9\s image2 remove x 9 a d>k room2 re-pack x & tr\ble ourselves no m ab\t x until our return to ,engl&2 :51 9 ! room 9 :i* x 0 prep>$1 we may witness ! magic process ( developm5t1 & rejoice t we h1 )\t mu* lab\r1 secur$ a picture ( ! ,coliseum or ( ! ,bridge ( ,sighs4 ,f ! ,j\rnal ( ! ,cambrian ,ar*ological ,association4 ,new ,photographic ,process4--,mr4 ,long1 ( ! firm ( ,bl& & ,long1 ,opticians1 ,fleet ,/reet1 has rec5tly put =? a valuable pamphlet1 9 ! =m ( an essay on ! dry collodion process4 ,by means ( ?is1 plates prep>$ weeks be=eh& may be expos$ to objects1 & !n kept = weeks aft]w>ds be=e !y are develop$1 z he has prov$ x himself on ! ,cont95t4 ,! advantage ( ?is process to travell]s1 & especially to ar*ologi/s1 is imm5se2 because hi!rto ! ma9 drawback ^u photography has be5 ! tr\ble & exp5se ( c>ry+ *emicals1 t5ts1 c4 c41 besides ! cam]a1 ) its l5ses1 to ! sc5e ( op]ation4 ,n[1 h[ev]1 x w be suffici5t to c>ry m]ely ! cam]a1 ) a suitable supply ( plates prep>$ accord+ to ?is process4 ,! obs]v] c !n1 by m]ely expos+ 8 plates1 ) ! prop] precautions1 bag any numb] ( views p] diem1 & on 8 return home c develop !m--or h !m develop$--at leisure4 ,if ?is process succe$s1 x w h ! effect ( splitt+ photography into two di/9ct bran*es--! /hetic1 & ! practical4 ,! =m] w fall to ! %>e ( ! intellig5t obs]v]1 ! travell]1 ! man ( ta/e1 :o w g & se>* = objects1 comb9e !m1 or use !m1 "u ! mo/ fav\rable /hetic circum/ances1 & !n w c>ry !m home to be h&$ ov] to ! man ( practice4 ,once 9 8 h&s1 no?+ w rema9 b to manipulate ! plates accord+ to ! rules ( photographic sci5ce1 by means ( all ! be/ appliances t a well fitt$ laboratory c furni%4 ,"o bran* w fe$ ! o!r4 ,"o w be ! dep>tm5t ( obs]vation1 ( se>*1 ( ta/e1 ( beauty2 ! o!r w be t ( calm sci5tific developm5t1 ( improvem5t1 ( pres]vation4 ,"o man w be l ! arti/ :o pa9ts2 ! o!r l ! arti/ :o engraves4 ,"o w be l ! au?or1 ! man :o writes2 ! o!r l ! pr9t]1 ! man :o p]petuates4 ,we recomm5d memb]s to enquire c>efully ab\t ?is new process2 because if x becomes firmly e/abli%$1 any ar*ologi/ mov+ ab\t ! ,c\ntry may get views ( *ur*es1 ca/les1 cromle*s1 me9i-hirion1 seals1 c4 c41 usque ad satietatum--we _h almo/ said ad nauseam2 b t ^w c nev] be connect$ ) ar*ology6 ,! up%ot ( ?is is1--,read ,mr4 ,long's pamphlet1 & set up a portable cam]a ) 8 prep>$ plates1 z we int5d do+ ourselves6 ,f ! ,liv]pool & ,man*e/] ,photographic ,j\rnal4 ,we mu/ advise all :o are int]e/$ 9 dry processes to obta9 ,mr4 ,long's cle>ly writt5 pamphlet4 7,lead]1 ,july #ae?1 #aheg47 ,extract f ,proce$+s ( ,*>lton ,photographic ,society1 ,octob] #h?1 #aheg4 ,pap] by ,mr4 ,hoop]1--,on ! results ( 8 exp]i5ce 9 ! practice ( sev]al ,pres]vative ,processes4 ,i comm5c$ exp]im5t+ on ! process ( ,mr4 ,long4 ,! success ,i h met ) f ! fir/ has conv9c$ me t t process w ere long be g5]ally adopt$3 ! plates be+ easily & quickly prep>$1 & keep+ well1 is a great advantage4 ,extract f ,lett] f ,g4 ,r4 ,smi?1 ,esq41 to ! ,editor ( ! ,london ,photographic ,j\rnal1 ,sept #ba1 #aheg4 ,my t\r ( a =tnight's duration hav+ end$1 ,i return$ to ,london1 & began develop+ 7! dry plates74 ,to my great delight1 ,i f\nd all ,mr4 ,long _h said 9 fav\r ( 8 process fully realiz$4 ,picture aft] picture 7,i took tw5ty-eight7 came out ) great beauty1 & s f> z ! process is conc]n$1 ,i h n _h a s+le failure4 ,mr4 ,long's ,dry ,collodion ,process4 ,lett] f ,rob]t ,hunt1 ,esq41 ,f4,r4,s41 to ! ,editor ( ! ,london ,photographic ,j\rnal1 ,octob]1 #aheg4 #f1 ,gre5's ,r[1 ,*elsea4 ,sir1--,x is due to ,mr4 ,long t ,i %\ld /ate :at my exp]i5ce has be5 ) 8 dry collodion plates1 & ,i feel mu* satisfaction 9 do+ s1 be+ enabl$ fully to confirm all t ,mr4 ,smi? has said respect+ ! dry plates prep>$ z he has describ$ 7,photo4 ,j\rn4 ,sept4 #ba74 ,on ! #bf? ( ,augu/1 ,mr4 ,long1 at my reque/1 furni%$ me ) "s ( 8 dry collodion plates4 ,abs5ce f ,london1 & ! press ( (ficial engagem5ts1 prev5t$ my try+ any exp]im5ts ) ^? plates until ! #cj? ( ,septemb]4 ,al?\gh ! wea!r 0 v unfav\rable1 ! result 0 sup]ior to my expectations4 ,on ! #g? ( ,octob]1 at f\r 9 ! aft]noon1 :5 ! sky 0 cov]$ ) cl\ds & ! wea!r /ormy1 ,i expos$ a plate 9 ! cam]a obscura = t5 m9utes to ! d>k brick build+1 ,*elsea ,hospital4 ,i enclose y a positive pr9t f ! result ( ?is exp]im5t4 ,:5 we rememb] t ! s5sitive plate _h be5 kept by me = a p]iod ( =ty-two days1 & !n expos$ "u v unfav\rable circum/ances1 ,i ?9k y w admit t ! result is satisfactory4 ,i %\ld n cont5t myself ) ?is trial1 b t ,i am aga9 compell$ to leave ,london = a long p]iod1 & ,i %all h no o!r opportunity ( te/+ ^! plates = ?is ye>4 ,i feel conv9c$ t ! travell] might ) p]fect safety use plates :i* h be5 prep>$ = a mon?1 & ?us relieve himself f mu* lab\r & frequ5t annoyance1 by ! use ( ,mr4 ,long's process4 ,rob]t ,hunt4 ,f ! ,illu/rat$ ,london ,news1 ,janu>y #i1 #aheh4 ,x is b a few ye>s s9ce1 :5 we he>d ) surprise1 & "s incr$ulity1 t light c\ld be made to del9eate images ( ext]nal objects ^u *emically prep>$ tablets plac$ 9 ! cam]a obscura1--n[ photography />es u 9 ! face at e corn]1--t :i* 0 wond]ful has become famili>1--t :i* 0 my/]i\s is s+ul>ly common4 ,9 cities1 we see glass h\ses1 on at lea/ "o ro( 9 e /reet1--9 villages1 c>avans1 ) ,br[n & ,jones1 photograph]s1 are regul>ly f\nd1--on ! hills we discov] ! t5t1 & 9 ! valleys ! cam]a1--by ! riv]-side !re is ! my/]i\s head hidd5 9 ! d>k curta9s ( a d>k box1--& ^u ! sea-%ore ! tripod-/& is securely fix$ 9 ! s&s1 & a bip$ is evid5tly focus+ = ! next f9e ocean wave1--! sket*] has fl$ to 8 own especial solitudes1 & ! photograph] has usurp$ 8 place4 ,x has be5 said ( ! mo/ rec5t photographic processes1 z 0 well said ( ! octo-syllabic v]se1 t x possesses un=tunate facilities4 ,?is is true 9 _m respects ( ! positive collodion process1 by :i* ! myriads ( sad reflections on humanity are p]petrat$4 ,n s1 h[ev]1 is x ) ! negative process1 by :i* alone we c multiply ! beautiful ?+s :i* ! sol> p5cil traces ) su* fidelity4 ,! lab\r att5dant ^u a photographic t\r is great1 & real en?usiasm alone c>ries ! amateur =w>d4 ,! cam]a obscura & ! /& are a burd51 & ) ! t5t & *emical box1 !y become a real load4 ,!n !re is ! unc]ta9ty att5dant ^u ! processes4 ,we deal ) ! nice/ *emical adju/m5ts4 ,! balance is arrang$ ) caution = a c]ta9 set ( conditions1--alt] b "o ( ^!1 & all goes wrong4 ,we leave home 9 ! morn+1 we "w 9 ! d>k all day1 & we return jad$ at night1 to f9d we h obta9$--no?+4 ,s5sitive z ! collodion process is1 & *>m+ z are ! results1 :5 all goes on successfully1 x has n hi!rto be5 a process :i* c be practis$ out ( doors1 )\t _m extraord9>y1 exp5sive1 & tr\blesome appliances4 ,x is1 !re=e1 ) v mu* satisfaction t we h wat*$ ! progress ( ! s-call$ dry collodion processes4 ,ne>ly all ! processes t h be5 publi%$1--! gelat9e1--! oxymel1--! glyc]9e1 & o!rs1--h mu* t is excell5t 9 !m2 b x appe>s to u t a dry collodion process devis$ by ,mr4 ,long1 ( :i* he has rec5tly publi%$ a description1 is m simple & effective ?an any o!r4 ,we h se5 beautiful pictures obta9$ 9 ,belgium ^u plates prep>$ 9 ,engl&1 & :i* plates 7 br\ght to ?is c\ntry aga9 be=e ! pictures 7 develop$4 ,any man may1 previ\sly to />t+ on 8 j\rney1 prep>e1 or pur*ase prep>$1 a /ock ( glass plates4 ,arm$ ) ^! & 8 cam]a1 he may proce$ to ,:]e ! bleak ,swiss _! /ormy mansion tread4 ,& =ce a *urli% soil = scanty bread2 or to t ------sea ,cybele fre% f ocean ,ris+ ) h] ti>a ( pr\d t[]s1-- &1 re/+ on 8 way1 he may adju/ 8 cam]a & 8 plate1 & 9 ! few m9utes :i*1 "u any circum/ances1 he w\ld sp5d 9 obs]vation1 he secures a picture = future /udy1--a photograph to give him pleasure 9 ! quiet ( 8 home4 ,mr4 ,long has publi%$ a little treatise1 ) :i* we head ?is article1 & by foll[+ out ! simple directions :i* he gives1 all may succe$ 9 obta9+ ! important desid]atum1--a p>cel ( highly s5sitive plates1 :i* c be pack$ 9 pap] & /[$ away 9 a portmanteau1 to be drawn out z occasion may require1 to be return$ aga9 to ! same package 7)\t hav+ any ( ! annoyances att5dant ^u a box ( liquid *emicals71 & a plate :i* c be kept ) its dormant picture q un9jur$ until ! photograph]1 on 8 arrival home1 at 8 p]fect leisure1 9 8 own op]at+ room1 c develop ! photograph :i* he has obta9$4 ,su* are ! facilities (f]$ by ?is improvem5t1 t we may expect almo/ e travell] w avail himself ( x1 & ?us secure = 8 own portfolio1 & ! portfolios ( 8 fri5ds1 views ( sc5es hall[$ by _! hi/orical association1--( ru9s r5d]$ sacr$ f ! sacr$ memories :i* /ill wrap !m 9 _! %ad[s1 z ! mantl+ ivy clo!s _! crumbl+ walls4 ,,! ,,dry ,,collodion ,,process4 ,be=e describ+ 9 detail ! manipulations ( ! process on ,dry ,collodion plates1 x w be necess>y to say a few words on ! mat]ials & app>atus to be employ$1 & also to give an acc\nt ( ! means ( prep>+ ! v>i\s solutions us$ 9 ! process4 ,fir/1 ,,! ,,collodion4 ,?is be+ ! pr9cipal mat]ial we h to use1 we mu/ ex]cise great c>e 9 ! selection ( a sample t possesses all ! *>act]i/ics :i* fit x = a dry process4 ,we mu/ reject all samples t possess great t5acity & contractile p[]3 ! ,collodion mu/ n be too ?ick1 & x mu/ fl[ ev5ly ov] ! plate1 & n set 9 ridges4 ,! be/ condition = ! ,iodiz$ ,collodion is t kn[n z p[d]y1 t is1 be+ spread on ! plate & p>tially dry1 x _c be remov$ z a film1 b crumbles up on be+ press$ by ! f+] 9 its passage across ! plate2 9 fact1 su* a condition z w\ld arise f us+ gun cotton prep>$ ) acids at a high temp]ature4 ,! foll[+ =mula w be f\nd to answ] mo/ admirably3 ,gun ,cotton #fj gra9s4 ,absolute ,alcohol #e ounces4 ,sulphuric !r1 sp4 gr4 #gcj #ae ounces4 ,! cotton is to be %ak5 up ) ! mixture ( alcohol & !r1 & :5 dissolv$1 ! bottle conta9+ x mu/ be /ood aside1 9 ord] t any undissolv$ p>ticles ( cotton may subside4 ,! cle> liquid may !n be decant$ into a clean bottle = use4 ,x w be z well to te/ ! quality ( ! ,collodion ?us prep>$ be=e coat+ any numb] ( plates ) x1 =1 al?\gh ! above proportions are v excell5t1 "s little latitude mu/ be all[$ = ! diff]5t degrees ( solubility ( ! v>i\s samples ( cotton us$ f "t to "t4 ,! film1 :5 spread1 on ! glass plate & p>tially dry1 %\ld n be capable ( be+ remov$ 9 ! =m ( a sk91 b %\ld give be=e ! f+] & crumble up on its be+ rubb$ across ! plate4 ,%\ld any difficulty1 h[ev]1 occur1 x w\ld be bett] to obta9 a sample ( ! ,collodion made by an exp]i5c$ h&1 9 ord] t a fair trial may be giv5 to ! process4 ,if ! ,collodion be too contractile x w give rise to bli/]s 9 ! film1 & w wa% (f ! plate dur+ developm5t4 ,! ,iodiz+ ,solution t ,i h f\nd to give ! be/ results 9 ?is process is made 9 ! mann] foll[+3-- ,absolute ,alcohol #h ounces4 ,iodide ( ,cadmium #fd gra9s4 ,iodide ( ,ammonium #fd gra9s4 ,! iodides are to be dissolv$ by agitation 9 ! alcohol1 & ! result+ solution is to be c>efully filt]$1 & pres]v$ 9 a well /opp]$ bottle4 ,! ,iodiz$ ,collodion consi/s (-- ,iodiz+ ,solution #b drams #a ounce ,pla9 ,collodion #f drams ,! ,collodion %\ld always be iodiz$ at lea/ twelve h\rs be=e x is requir$2 ?is int]val all[s any insoluble matt]s ei!r f ! iodiz+ solution or f ! ,collodion itself to fall to ! bottom1 & enables ! op]ator to p\r (f ! cle> solution into a p]fectly clean bottle = use4 ,next 9 importance to ! ,iodiz$ ,collodion comes ,,! ,,pres]vative ,,solution4 ,"s c>e is requir$ 9 ! prep>ation ( ?is solution1 9 ord] t x may be cle> & bright :5 f9i%$1 & n conta9 p>ticles t w\ld be deposit$ 9 its passage ov] ! ,collodion film :5 be+ us$4 ,! *ief precaution to be obs]v$ is n to all[ x to boil too rapidly1 & n to conduct ! op]ation ov] too fi]ce a fire2 att5tion to ?is w prev5t _m failures1 & ensure a solution 9 e way suit$ = ! process4 ,take "o ounce ( ! be/ transp>5t gelat9e1 & ?r[ x into a pipk9 9 :i* has be5 previ\sly plac$ "o p9t ( di/ill$ wat]2 set ?is on a sl[ fire1 or ov] a lamp1 until ! gelat9e is completely melt$2 !n weigh out half ounce ( pure citric acid & dissolve x 9 two ounces ( di/ill$ wat]2 add ?is to ! solution ( gelat9e1 /irr+ x dur+ ! addition ) a glass rod4 ,! solution 9 ! pipk9 is n[ to be g5tly boil$ = ab\t half an h\r3 remove x f ! fire1 & add suffici5t di/ill$ wat] to make up ! bulk ( liquid to "o p9t4 ,:5 q cold1 ! liquid 9 ! pipk9 is to be filt]$ ?r\gh two ?icknesses ( pure :ite blott+ pap] into a bottle p]fectly dry & clean4 ,we n[ add to e p9t ( filt]$ pres]vative solution1 two ounces ( alcohol ( ! specific gravity ( #hdj4 ,! solution ?us prep>$ is ready = use1 & %\ld be ( a pale amb] col\r1 )\t any signs ( insoluble p>ticles float+ 9 x2 %\ld any appe> aft] x has be5 prep>$ = "s days1 a second filtration w remove !m1 & r5d] ! liquid aga9 bright & cle>4 ,x w be f\nd bett] to prep>e ?is solution only 9 ! quantity indicat$ above1 unless ! consumption be l>ge1 =1 al?\gh x w keep good = a mon? or m1 my exp]i5ce po9ts to ! fact1 t ! mo/ successful results foll[ ! use ( ,pres]vative ,solution fre%ly prep>$4 ,,! ,,nitrate ,,( ,,silv] ,,ba?4 ,! ba? = r5d]+ ! plates s5sitive does n diff] f t recomm5d$ = tak+ negatives ) wet ,collodion4 ,! =mula = its prep>ation may n be out ( place1 h[ev]1 & may assi/ ^? ^: k ( ! matt] is n p]fect4 ,nitrate ( ,silv] 7fus$7 #a ounces4 ,di/ill$ ,wat] #a p9t4 ,iodide ( ,cadmium #c gra9s4 ,dissolve ! nitrate ( silv] 9 half ! wat] & !n add ! iodide ( cadmium2 ?or\ghly agitate ! mixture = five or t5 m9utes1 !n add ounce ( alcohol1 sp4 gr4 #hdj1 & fill up ) ! rema9+ half ( ! di/ill$ wat]2 fur!r agitation1 & subsequ5t filtration ?r\gh two ?icknesses ( :ite bibul\s pap]1 w put u 9 possession ( a negative ba?4 ,! nitrate ( silv] be+ fus$1 & consequ5tly1 pure & neutral1 & z x is ess5tial to obta9 clean pictures t ! ba? %\ld be slightly acid 9 its reaction1 we f9d x necess>y to add #e or #f m9ims or drops ( pure glacial acetic acid to a ba? ( #bj ounces1 9 ord] t ! above condition may obta94 ,,! ,,develop+ ,,solution ,is v simple 9 its nature1 be+ m]ely a saturat$ solution ( gallic acid 9 di/ill$ wat]1 to :i* has be5 add$ a small proportion ( alcohol ( sp4 gr4 #hdj4 ,! exact =mula is z foll[s3-- ,di/ill$ ,wat] #a p9t4 ,alcohol sp4 gr4 #hdj #a ounce4 ,gallic ,acid ounce4 ,! gallic acid w n be entirely dissolv$1 b t left at ! bottom ( ! bottle w ensure ! solution be+ saturat$2 x is bett] n to filt] ! develop+ solution until x is requir$ = use1 z x is pref]able to all[ x to /& ov] an excess ( gallic acid1 ?an = x to be )drawn aft] a slight agitation ) ! cry/als2 x is a great error to suppose t we obta9 a saturat$ solution ( gallic acid by m]ely agitat+ ! cry/als ) wat] = a few mom5ts4 ,! develop+ solution prep>$ z above direct$ w keep good & 9 work+ ord] = "s weeks1 b :5 x becomes ( a d>k color1 x w\ld be saf] to reject x & prep>e a fre% quantity ?an to run ! risk ( a failure f an impure & imp]fect develop+ ag5t4 ,,nitrate ,,( ,,silv] ,,solution1 ,= add+ to ! gallic acid dur+ developm5t1 is compos$ ( ,fus$ ,nitrate ( ,silv] #cj gra9s4 ,di/ill$ ,wat] #a ounce4 ,,! ,,fix+ ,,solution ,consi/s ( a solution ( hyposulphite ( soda 9 wat]1 7filt]$17 9 ! foll[+ proportion3-- ,hyposulphite ( ,soda 9 cry/als #h ounces4 ,ra9 or ,filt]$ ,wat] #a p9t4 ,! ,app>atus1 c4 requir$ 9 ! ,dry ,collodion process is ( ! mo/ simple k9d1 & consi/ ( ! foll[+ items ,glass plates4 ,pneumatic plate hold]s4 ,plate hold]1 = clean+ ! plates4 ,glass or porcela9 di%es4 ,glass or gutta p]*a dipp+ ba? & dipp]4 ,silv] hook1 = lift+ plates4 ,levell+ /&4 ,measures1 #a1 #b1 & #d ounce4 ,glass funnels4 ,wa% lea!r4 ,"s clean clo?s & broad camel's hair bru%4 ,cotton wool4 ,bibul\s pap]4 ,a ,! ,*emicals are-- ,nitrate ( silv] 7fus$47 ,glacial acetic acid4 ,iodiz$ ,collodion 7dry47 ,gelat9e4 ,citric ,acid4 ,alcohol4 ,sulphuric !r4 ,gallic acid4 ,hyposulphite ( soda4 ,iodide ( cadmium4 ,b5zo9 v>ni%4 ,a ,! dry ,collodion & ! v>i\s solutions1 ready = use1 may be obta9$ ( ! ,publi%]s4 ,9 ! above ,li/ we presume t ! op]ator is 9 possession ( a suitable cam]a & l5s1 & ! usual adjuncts ( cam]a tripod1 c4 c4 ,^! %\ld all be ( ! be/ k9d1 o!rwise x w be impossible to obta9 good results4 ,illu/ration ,,! ,,manipulation4 ,! process ( obta9+ a picture on ,dry ,collodion plates is 9 itself a mo/ simple & easy matt]1 b !re are "o or two precautions t appe> necess>y to ensure success t _c be lightly neglect$4 ,9 ! fir/ place1 x is absolutely c]ta91 t if we want a clean & bright picture1 we mu/ h a plate p]fectly free f all extrane\s matt]s1 su* z soap1 grease1 c4 ,v>i\s plans = clean+ ! glass plate h be5 propos$1 all m or less successful1 b 9 mo/ ( !m !re is "o great fault1 namely1 t ( us+ a p[d]1 z tripoli1 rott5-/one1 c4 to rub (f ! dirt )4 ,n[ we f9d t 9 practice ?is w n answ]1 f ! almo/ impossibility ( gett+ rid ( ! float+ p>ticles ( ! p[d] :5 ! plate is r5d]$ slightly electrical by rubb+1 & z ea* ( ^! p>ticles if x become envelop$ 9 ! ,collodion film1 w\ld produce a spot on ! f9i%$ picture1 we f9d x necess>y to se>* 9 ano!r direction = a det]g5t = ! glass plate to :i* ?is objection w\ld n apply4 ,"o soon pres5ts itself 9 ! =m ( old wa/e ,collodion--?is spread on ! glass plate & rubb$ (f aga9 ) cotton wool1 makes ! be/ & mo/ p]fect cleans] hi!rto propos$1 )\t any ( ! objections usually app5d$ to o!r mat]ials us$ = ! same purpose4 ,! next precaution necess>y to be obs]v$ is1 t all ! solutions %\ld be p]fectly bright & cle>2 !y %\ld be absolutely free f float+ p>ticles ( any k9d4 ,?is is ess5tial1 z x is impossible to obta9 clean pictures )\t att5tion to x2 ! float+ bodies 9 ! solution settle on ! plate1 & =m s _m nuclei1 ar\nd :i*1 9 ! developm5t ( ! picture1 ! silv] is deposit$ 9 an opaque mass1 =m+ spots & blemi%es on ! surface ( ! plate4 ,!re is "o precaution t _c be disp5s$ )1 & t is1 to be sure t ! *emicals employ$ are ( absolute purity2 )\t ?is1 success is v problematical1 & vexation & disgu/ ! sure rew>d ( its neglect4 ,! process may = conv5i5ce be divid$ into ! foll[+ /ages3-- #a4--;,clean+ ! plate4 #b4--;,coat+ x ) ,collodion4 #c4--,r5d]+ ! plate s5sitive4 #d4--;,apply+ ! ,pres]vative solution4 #e4--;,exposure 9 ! cam]a4 #f4--;,developm5t ( ! picture4 #g4--;,fix+ ! develop$ image4 #h4--,v>ni%+ ! f9i%$ negative4 ,,clean+ ,,! ,,plate4 ,illu/ration3 ,fig4 #a4 ,! glass plate is fir/ to be ?or\ghly wa%$ ) an abundance ( wat]1 & dri$ on clean clo?s2 x is !n to be plac$ 9 ! plate hold] 7,fig4 #a71 & h p\r$ ov] its upp] side a small quantity ( old ,collodion4 ,n[ take a tuft ( cotton wool & rub ! ,collodion all ov] ! plate1 giv+ ! h& a circul> motion at ! "t3 keep rubb+ until ! ,collodion is v ne>ly dry1 !n turn ! plate 9 ! hold] & repeat ! same treatm5t ) ! opposite side2 !n lean ! plate ?us treat$ aga9/ a wall1 :ile ano!r1 or any numb] are put ?r\gh ?is /age4 ,:5 a suffici5t numb] h be5 s f> clean$1 ! plate hold] is to be c>efully wip$1 & ! fir/ plate--! edges ( :i* h also be5 c>efully wip$ ) a clean clo?--is to be replac$1 & treat$ ) a sm>t rubb+ ) a wa% lea!r1 ! op]ator at int]vals g5tly brea?+ on ! plate4 ,bo? sides ( ! plate be+ clean$ 9 ?is way1 x may be remov$1 aft] aga9 wip+ ! edges c>efully1 to ! plate box1 to await ! subsequ5t /eps ( ! process4 ,plates clean$ 9 ?is mann] %\ld look p]fectly transp>5t1 & free f any m>ks ( ! clo? or lea!r1 & :5 brea!d ^u %\ld cond5se ! moi/ure ( ! brea? 9 "o uni=m degree ov] ! :ole surface4 ,if pat*es ( unev5 cond5sation appe>1 a repetition ( ! process mu/ be _h rec\rse to4 ,! plate be+ clean1 we proce$ to ! next /ep1 ,,coat+ ,,! ,,plate4 ,lay a piece ( clean blott+ pap] on ! table1 l>g] ?an ! plate we are ab\t to use2 place ! clean plate on ?is1 & !n br+ ! pneumatic plate hold] to be> on ! c5tre ( ! glass1 mak+ sure t x has laid hold firmly4 ,we !n raise ! plate ) ! left h&1 & br+ ! surface upw>ds :i* 0 previ\sly on ! blott+ pap]2 x w no d\bt be f\nd t small p>ticles ( du/ h atta*$ !mselves to ! plate1 ^! mu/ be remov$ by a broad & s(t camel's hair bru%1 kept = ?is purpose only4 ,illu/ration3 ,fig4 #b4 ,! ,collodion is !n to be p\r$ on1 z %[n 9 ! diagram 7,fig4 #b71 & ! sup]flu\s quantity return$ to ! bottle f "o ( ! corn]s ( ! plate4 ,x does n matt] :i* ( ! corn]s is us$ = ?is purpose1 t :i* is mo/ conv5i5t to ! op]ator assum+ ! pref]5ce4 ,if ! ,collodion %\ld h a t5d5cy to set 9 ridges across ! plate1 a rock+ motion1 :ile ! deliv]y corn] is 9 ! m\? ( ! bottle1 may be giv5 to x1 /ill keep+ ! plate 9 a v]tical plane4 ,?is w re/ore ! film to p]fect ev5ness & fre$om f irregul>ity ( any sort4 ,! plate %\ld be held 9 ! v]tical position = a few mom5ts be=e be+ plac$ on ! dipp] to und]go ! next op]ation ( ,,r5d]+ ,,! ,,plate ,,s5sitive4 ,illu/ration3 ,fig4 #c4 ,! plate be+ plac$1 coat$ side outw>ds1 on ! dipp]1 is to be plung$ )\t hesitation into ! nitrate ( silv] ba? 7,fig4 #c74 ,?is mu/ be done )\t /opp+1 o!rwise a l9e across ! plate w indicate1 on developm5t1 ! position ( ! plate 9 ! ba? at ! "t ?is /oppage took place2 s t if we 7 to imm]se ! plate by a s]ies ( j]ks1 we %\ld h z a result1 s _m b&s ( unequal developm5t 9 ! f9i%$ picture2 %[+ ! importance ( plung+ ! plate into ! ba? )\t any /oppage dur+ its desc5t4 ,illu/ration3 ,fig4 #d4 ,:5 ! plate has re/$ = half a m9ute 9 ! ba?1 x may be )drawn1 & quickly re-imm]s$4 ,?is wa%+ mu/ be cont9u$ at int]vals1 until ! greasy appe>ance goes (f1 g5]ally = ! space ( two m9utes1 :5 ! plate is to be tak5 out ( ! ba? & plac$ ) its l[] edge on a pad ( blott+ pap]1 9 a position z %[n 9 ! cut 7,fig4 #d47 ,a fragm5t ( blott+ pap] is !n to be us$ to absorb ! moi/ure f ! back ( ! plate1 & a pneumatic plate hold]--:i* %\ld only be us$ = ?is purpose--is appli$ to x to =m a support :ile ,,apply+ ,,! ,,pres]vative ,,solution4 ,illu/ration3 ,fig4 #e4 ,tak+ ! plate 9 ! left h& by means ( ! pneumatic hold]1 incl9e x z %[n 9 ! diagram 7,fig4 #e72 !n hav+ p\r$ into a p]fectly clean measure r m ( ! pres]vative solution ?an is necess>y to cov] ! plate twice1,b p\r half ( x along ! upp] edge 7,a ,b7 9 su* a mann]1 t a wave ( ! solution may fl[ uni=mly f "o end ( ! plate to ! o!r2 all[ ?is to fl[ (f into ! wa/e pan or s9k1 & !n br+ ! plate to ! horizontal position1 & p\r on ! rema9d] ( ! pres]vative solution1 eight times at lea/1 all[+ x to fl[ back into ! measure f ea* corn] 9 succession1 9 ord] t ! :ole plate may be br\ght uni=mly "u its influ5ce4 ,! plate is to be aga9 plac$ on a piece ( clean blott+ pap] 7z %[n at ,fig4 #d71 & its back once m wip$ ) a fragm5t ( blott+ or papi] ,joseph1 9 ord] to remove any ( ! pres]vative solution t may h run f ! surface to ! und]side 9 ! previ\s op]ation4 ,! plate ?us pres]v$ is to be re>$ on a piece ( blott+ pap] ) its face aga9/ ! wall until dry1 & is !n to be /[$ away 9 a plate box1 p]fectly light-tight to await ! ,b ,a plate1 #i in*es by #g1 takes ab\t #a ounce ( solution4 ,,exposure ,,9 ,,! ,,cam]a4 ,collodion plates pres]v$ z above direct$1 w keep p]fectly good & s5sitive = #ab mon?s at lea/2 & f ! appe>ance ( ! develop$ image on a plate t has be5 kept t "t1 ,i see at pres5t no reason :y1 if pres]v$ f ! damp1 !y w\ld n keep indef9itely4 ,9 my exp]im5ts1 ,i h nev] f\nd ! lea/ diff]5ce 9 s5sitiv5ess1 :e!r ! plate be us$ )9 a few h\rs ( ! "t ( its prep>ation1 or has be5 kept = mon?s2 until1 h[ev]1 we h _h m exp]i5ce 9 ! matt]1 x w\ld be saf] n to rely on plates m ?an #ab mon?s old4 ,! "t ( exposure 9 ! cam]a1 ( c\rse v>ies 9 ?is process1 "u ! same circum/ances z x does ) ! wet ,collodion2 b ,i h f\nd z a g5]al rule1 t x is bett] to give ! plate a full exposure ?an to fall into ! opposite extreme3 t is to say1 x is pref]able to expose ! plate suffici5t "t = ! deepe/ %ad[s to make an impression ?an to close ! d>k slide at an e>li] p]iod1 ! mode ( developm5t all[+ consid]able latitude 9 ?is p>ticul>4 ,) a #c-;in* s+le l5s1 #af-;in* focus1 ) a -in* /op1 ! usual "t = a bright l&scape w be ab\t #e m9utes2 ?is ( c\rse is m]ely an approximation to ! "t ( exposure1 ! exact "t c only be arriv$ at by exp]i5ce4 ,i d n ?9k ,i c d bett] ?an foll[ ! plan adopt$ 9 my ,practical ,photography1 ( giv+ in/ances ( "u & ov] exposure1 z a means ( educat+ ! tyro 9 ! appe>ances t result f ^! conditions ( ! plate4 ,if ! exposure has be5 ( too %ort duration1 ! image w come out "u ! develop+ solution ) difficulty2 & aft] a cont9u$ imm]sion 9 x w only pres5t ! high lights1 ! deep %ad[s n be+ repres5t$1 or1 if s1 9 s fa9t a mann] z to be useless 9 ! picture4 ,an ov] expos$ plate1 :5 treat$ ) ! develop+ solution1 w almo/ imm$iately give indications ( ! picture2 & 9 a few m9utes1 ! :ole ( ! picture1 deep %ad[s & all1 w come put 9 unnatural =ce2 on look+ ?r\gh ! picture ?us produc$1 we %all obs]ve a great flatness 9 x1 !re is a want ( contra/ betwe5 ! v>i\s p>ts1 & al?\gh by cont9u+ ! developm5t we might obta9 a tol]ably int5se negative1 ! result+ picture w\ld be flat1 meagre1 & unsatisfactory3 on ! contr>y1 a plate t has be5 expos$ = ! correct "t1 w comport itself v diff]5tly "u developm5t f ! =ego+4 ,! sky & high lights w fir/ appe>1 !n ! half tones1 & la/ly1 ! p>ts ( ! picture t 7 9 deep %ad[ w %[ !mselves2 ?is effect %\ld take place 9 ab\t five m9utes f ! "t ( imm]sion 9 ! develop+ ba?3 a picture t comes out soon] ?an ?is1 is1 z a g5]al rule1 ov] expos$2 & "o t is mu* aft] ! five m9utes be=e x makes its appe>ance1 may be consid]$ z "u expos$4 ,we tru/ t ! above in/ances may be ( s]vice 9 indicat+ ! av]age "t requir$ = an exposure ( ! plate1 b we mu/ ask ! read] n to take ! figures giv5 z actual values1 b m]ely z v close approximations to ! tru?4 ,we w imag9e ! plate to h be5 prop]ly expos$1 & proce$ to ,,! ,,developm5t ,,( ,,! ,,picture4 ,x is n necess>y t ! picture %\ld be develop$ imm$iately aft] exposure 9 ! cam]a2 any "t t is conv5i5t to ! op]ator may int]v5e betwe5 ! processes1 provid$ ! aggregate "t be=e & aft] exposure does n exce$ ! limits ( keep+ p[] ( ! plate4 ,! developm5t ( ! picture may be conduct$ 9 two ways1 ei!r by imm]s+ ! plate 9 ba?s or di%es1 or by plac+ x on ! levell+ /& & treat+ x ) ! solutions1 9 _! prop] ord]1 z detail$ bel[4 ,ea* plan possesses c]ta9 advantages1 b x is ( little consequ5ce :i* "o is foll[$4 ,p]haps !re is less dang] ( ! film wa%+ (f if ! plate be treat$ on ! levell+ /&1 & on ! o!r side ) l>ge plates x is m difficult to cov] !m ev5ly ) ! develop+ solution ?an x is simply to imm]se !m 9 a pan ( solution4 ,we say to ! read]1 try bo? ways1 & make y\r own selection4 ,! plate ^u be+ remov$ f ! cam]a is plac$ face upw>ds 9 a porcela9 or glass di% ( a conv5i5t size 7n too l>ge71 & suffici5t di/ill$ wat] is to be p\r$ ov] x to cov] ! surface ?or\ghly--?is is = ! purpose ( s(t5+ ! pres]vative solution1 & mu/ be all[$ to rema9 on ! plate = five m9utes2 ! plate is !n to be lift$ 9 & out ( ! wat] by means ( ! silv] hook4 ,?is done1 remove ! plate to a p]fectly clean di%1 & p\r c>efully ov] x ! develop+ solution1 compos$ ( ,saturat$ ,solution ( ,gallic ,acid 7p4 #aj7 #h ounces4 ,solution ( ,nitrate ( ,silv] 7p4 #aj7 #b drams4 ,,?or\ghly ,,mix$4 ,9 a few m9utes ! picture w beg9 to make its appe>ance1 & w gradually unfold its details "u ! influ5ce ( ! develop]1 until ! :ole ( !m are app>5t2 on rais+ ! plate1 h[ev]1 :5 ?is /age ( developm5t is rea*$1 & view+ x by transmitt$ light1 ! picture w appe> weak & poor2 we mu/ n[ remove ! plate f ! ba?1 & add #b drams m ( ! nitrate silv] solution1 & hav+ ?or\ghly mix$ x ) ! gallic acid already 9 ! di%1 we return ! p>tially develop$ plate1 :i* 9 ! c\rse ( a few m9utes w h acquir$ a great am\nt ( int5sity1--! exact degree c be regulat$ by ! "t ( imm]sion3 :5 ! picture appe>s suffici5tly int5se1 x is to be remov$ f ! develop+ di%1 & a g5tle /ream ( wat] is p\r$ ov] x1 9 ord] to remove any adh]+ develop+ solution1 & /op all fur!r r$uc+ action on x4 ,dur+ ! :ole "t ( ! developm5t1 ! gallic acid %\ld rema9 q cle>2 x w become slightly discol\r$ be=e ! end ( ! developm5t1 b x ought n at any "t to become muddy1 or x w deposit a sort ( s&y s$im5t on ! surface ( ! plate1 :i* _c be remov$ by subsequ5t wa%+4 ,! usual "t occupi$ 9 ! developm5t ( a successful picture is f #bj to #cj m9utes1 x might be develop$ mu* quick] by us+ pyrogallic acid1 b at pres5t ,i give ! pref]5ce to ! develop] ,i h describ$1 z ,i believe x to be m c]ta91 & m "u ! control ( ! op]ator ?an ! pyrogallic acid2 & fur!r1 z x is n necess>y to wat* ! developm5t all ! "t x is go+ on1 !re c be v little sav+ ( "t 9 ! m rapid me?od ( br++ out ! lat5t picture4 ,! picture be+ wa%$ free f ! adh]+ develop+ solution1 is to be plac$ on ! levell+ /&1 & subject$ to ! sev5? "p ( ! process-- ,,fix+ ,,! ,,develop$ ,,image4 ,?is is accompli%$ by p\r+ ov] ! surface ( ! plate suffici5t solution ( hyposulphite ( soda 7p4 #ae7 to ?or\ghly cov] x1 ?is w dissolve out ! unalt]$ iodide ( silv]1 & give u a cle> & bright picture1 9 :i* ! deep %ad[s %\ld be z transp>5t z ! glass itself1 & ! high lights z d5se z a piece ( metal1 ! int]m$iate tones assum+ _! prop] positions accord+ to ! int5sity ( ! light t 0 conc]n$ 9 _! =mation4 ,:5 ! :ole ( ! yell[ iodide ( silv] is remov$1 ! fix+ solution may be ?r[n (f1 & ! plate mu/ be treat$ ) an abundance ( wat]2 too mu* _c well be giv5 at ?is /age1 z ! hyposulphite adh]es ) great t5acity to ! plate1 ev5 aft] a good wa%+4 ,! back ( ! plate mu/ be wa%$ z well z ! front1 = ,i h f\nd t a neglect ( ?is precaution has ru9$ _m a f9e negative2 ! hyposulphite rema9+ at ! back f9d+ its way by capill>y attraction to ! surface1 & once !re1 its de/ructive qualities are sure1 soon] or lat]1 to r5d] !mselves evid5t4 ,! picture be+ ?or\ghly wa%$1 & ei!r dri$ spontane\sly or by ! fire1 has only to be cov]$ ) a film ( v>ni%4 ,& n[ comes ! la/ op]ation1 ( ,,v>ni%+ ,,! ,,f9i%$ ,,negative4 ,b5zo9 v>ni% is ! be/ coat+ t c be giv5 to a ,collodion negative4 ,x resi/s ! action ( pieces ( grit2 x does n crack2 &1 above all1 x does n1 l amb] v>ni%1 split (f ! picture on ! slighte/ friction4 ,! application ( ?is v>ni% is a v simple matt]4 ,! negative is to be aga9 plac$ on a pneumatic plate hold]1 & ! v>ni% is to be p\r$ on to ! surface 9 precisely ! same mann] z ! ,collodion 0 at ! comm5cem5t ( ! process1 ! sup]flu\s quantity be+ return$ to ! bottle3 9 a few mom5ts ! v>ni% w be q dry & h>d1 & ! plate may be h&l$ ) p]fect safety4 ,i may m5tion1 z a precaution1 9 v>ni%+ ! plate1 t x is bett] to p]=m t op]ation 9 a /ill atmosph]e2 z ! solv5t ( ! gum be+ *lor(orm & v volatile1 if x 7 conduct$ 9 a curr5t ( air1 !re might be "s difficulty 9 obta9+ an ev5 coat+ to ! picture4 ,9 conclud+ ?is description ( a process1 :i* is at once simple & c]ta91 ,i w\ld ask ! pati5t att5tion ( ^? :o may d me ! honor ( repeat+ my exp]im5ts4 ,i h endeav\r$ to r5d] ! details ( ! process z intelligible z possible1 & if ,i h succe$$ 9 advanc+ ! art ( ,photography only "o /ep by s do+1 ,i consid] t x is an ample return = h\rs & days sp5t 9 anxi\s ?\ght & labori\s exp]im5t4 ,,f9is4 ,,special ,,li/ ,,( ,,requisites ,,= ,,! ,,dry ,,collodion ,,process1 ,,suppli$ ,,by ,messrs1 ,,bl& ,,long1 ,opticians1 ,photographic ,in/rum5t ,mak]s ,,to ,,! ,,que51 #aec1 ,,fleet ,,/reet1 ,,london4 99 99 99 99 99 ,,bl& ,,long',s ,,iodiz$ ,,dry ,,collodion4 ,?is prep>ation w keep = an indef9ite p]iod1 & c be export$ to any climate1 )\t risk ( det]ioration4 ,half-p9ts1 #ajs42 ,p9ts1 #ahs4 99 99 99 99 99 ,,bl& ,,long',s ,,pres]vative ,,solution1 ,,ready ,,= ,,use4--#as4 p] p9t4 ,,bl& ,,long',s ,,b5zo9 ,,v>ni%1 ,,= ,,protect+ ,,! ,,f9i%$ ,,negative4 #as4 p] oz4 ,?is v>ni% does n require ! plate to be w>m$2 b dries in/antly1 leav+ a p]fectly h>d transp>5t coat+ on ! picture4 99 99 99 99 99 ,,nitrate ,,( ,,silv] ,,ba?1 ,,= ,,bl& ,,long',s ,,dry ,,collodion1 ,ready = imm$iate use4--#gs4 #f;d4 p] p9t4 99 99 99 99 99 ,,pure ,,*emicals4 s4 d4 ,fus$ ,nitrate ( ,silv]1 absolutely pure #d #f p] oz4 ,glacial ,acetic ,acid #a #j ,pure ,gelat9e #j #f ,pure ,citric ,acid #j #f ,gallic ,acid1 pure #a #f ,iodide ( ,cadmium #c #j ,hyposulphite ( ,soda #a #j p] lb4 ,pure ,sulphuric !r #j #f p] oz4 ,absolute ,alcohol #j #f 99 99 99 99 99 ,,= ,,! ,,prices ,,( ,,app>atus ,,see ,,bl& ,,long',s ,illu/rat$ ,catalogue ( ,photographic ,app>atus ,s5t free by po/1 on application4 ,,s5sitive ,,dry ,,collodion ,,plates1 ,,ready ,,= ,,exposure ,,9 ,,! ,,cam]a4 7,,long',s ,,process47 99 99 99 99 99 ,messrs4 ,bl& ,long are n[ prep>$ to supply ^! plates1 c>efully secur$ 9 seal$ cases1 ) full directions = exposure & developm5t1 ( all sizes & 9 any quantity1 at ! foll[+ prices3-- ,p] ,doz4 ,p] ,doz4 s4 d4 4 s4 d4 #d #c #e #j #g #f #j #ad #j #e #d #f #f #h #f #j #ah #j #e #c #f #j #i #g #a #a #j #f #c #h #f #aj #h #a #f #j #f #d #h #f #aa #i #a #ac #f #f #c #h #i #ab #aj #b #j #j #f #e #h #f #ae #ab #d #j #j ,,l>g] ,,or ,,o!r ,,sizes ,,to ,,ord]4 ,! advantages ( a c]ta9 & simple ,dry ,collodion ,process are s obvi\s to ^? :o h practis$ ,photography 9 ! op5 air1 t we feel x is m]ely necess>y to introduce ! above li/ to _! notice ) z few rem>ks z possible4 ,we w\ld1 h[ev]1 m5tion a few p>ticul>s connect$ ) ! process = ! in=mation ( ^? :o h n hi!rto practis$ ! ,dry ,collodion process1 z detail$ by ,mr4 ,long4 ,! plates z prep>$ = sale1 are h]metically seal$ 9 an envelope p]fectly imp]vi\s to air & moi/ure1 !y c !re=e be export$ to any climate )\t risk ( det]ioration4 ,plates prep>$ by ,mr4 ,long's process w keep s5sitive = almo/ an indef9ite p]iod1 & c be develop$ at any "t )\t reg>d to ! date ( exposure2 ?is1 x w be se51 is ( imm5se advantage to ! t\ri/1 z he c delay ! developm5t ( ! :ole ( 8 plates until 8 return4 ,to ^? ,photograph]s ^: incl9ations or want ( leisure w n admit ( _! c>ry+ ?r\gh ! fir/ prep>ation ( ! plate1 ^! ,dry ,s5sitive ,plates w be f\nd invaluable1 enabl+ _! :ole en]gy to be direct$ to ! m c>eful selection ( subject4 ,! plates be+ dry1 !re is no dang] ( du/ settl+ on _! surfaces2 ?is po9t w be appreciat$ by e ,photograph]4 ,! developm5t ( ! pictures c be conduct$ 9 any room :5ce ! light c be exclud$--z ! process is simple & clean--?ree di%es be+ ! only requisites 9 po9t ( app>atus4 ,to ,(fic]s1 ,eng9e]s1 & ,ar*itects1 ^! ,dry ,plates (f] a desid]atum ( no small value1 z !y are always ready = use1 occupy v little room 9 travell+1 & c be us$ "u circum/ances :i* w\ld preclude ! adoption ( any process t _h to be c>ri$ out on ! spot4 99 99 99 99 99 ,,bl& ,,long1 ,photographic ,in/rum5t ,mak]s to ! ,que5 #aec1 ,,fleet ,,/reet1 ,,london4 ,,! ,,dry ,,collodion ,,processes4 99 99 99 99 99 ,messrs4 ,,bl& ,,long h inv5t$ ! foll[+ simple means ( ,,*ang+ ,,! ,,dry ,,collodion ,,plates :ile work+ 9 ! fields4 ,! plan has be5 9 use = "s "t1 & answ]s p]fectly4 99 99 99 99 99 ,price accord+ to size4 ,adapt$ to ,/]eoscopic ,cam]a1 #aes4 99 99 99 99 99 ,illu/ration ,,description ,,& ,,directions ,,= ,,use4 ,no matt] :at process we employ to reta9 ! s5sitiv5ess ( our plates1 x is mo/ objectionable t ! glasses %\ld be made to slide by _! gravity f ! plate-box to ! slide2 = if we employ ei!r honey1 glyc]9e1 or oxymel z pres]vative ag5ts1 ! *ances are consid]ably 9 favor ( an am\nt ( du/ settl+ on ! surface1 ! du/ be+ 9 a great "p =m$ by ! attrition ( ! r\gh5$ edges ( ! plate aga9/ ! plate-box4 ,ano!r inconv5i5ce att5d+ ! use ( a box :5 ! plate has to slide1 is ! dang] t exi/s "u t arrangem5t ( ripp+ ! film f ! edges ( ! plate by ! friction aga9/ ! groove 9 ! box :i* holds x4 ,^! may appe> v trivial matt]s1 b !y are nev]!less great drawbacks to successful op]ations4 ,we may m5tion t ! plan we are ab\t to describe is equally applicable to all ,cam]as ( mod]ate size4 ,we w1 h[ev]1 take our description f ! =m ( app>atus adapt$ to a d\ble l5s ,/]eoscopic ,cam]a4 ,! ,cam]a 7,a7 is furni%$ at its back ) two wires 7,b74 ,on ^! wires slides ! plate-box 7,c71 :i* has previ\sly be5 fitt$ at its sides ) two sockets 7,d74 ,j inside ! back ( ! ,cam]a box is a spr+ 7,e71 & on ! top ( ! ,cam]a is a button 7,f71 :i* secures ! d>k slide 9 its place4 ,we n[ slide ! box ( prep>$ plates 7,c7 on to ! wires 7,b71 ! lid ( ! box op5+ f ! ,cam]a2 we !n /ret* ov] ! :ole affair1 ! black light pro( cov]+ 7,g72 ?is completes ! arrangem5t1 & n[ = ! mode ( op]at+4 ,! opaque cov]+ is furni%$ at its side ) two ela/ic r+s4 ,into ^! ?ru/ ! h&s1 s t ! r+s may firmly encompass ! wri/4 ,!n op5 ! plate-box1 & ?r[ ! lid q back4 ,next unbutton ! door ( ! d>k slide1 & raise x until ! spr+ 7,e7 flies und]nea? x1 & reta9s x 9 a horizontal position4 ,?is we w presume to be done ) ! "r h&2 ! left h& be+ engag$ z soon z ! door is op5$1 9 hold+ ! plate t is already 9 ! back 9 its place4 ,! "r h& be+ n[ at lib]ty1 comes to ! assi/ance ( ! left1 & ! plate t has und]gone exposure is safely transf]r$ to ! vacant groove 9 ! plate-box4 ,?is accompli%$1 ! next plate is to be plac$ 9 ! back1 & ! same op]ations gone ?r\gh 9 ! inv]se ord]1 ! left hold+ ! plate 9 its place1 :ile ! "r releases ! door f ! influ5ce ( ! spr+ 7,e71 & re-buttons x1 leav+ ! plate q safe 9 ! d>k slide4 ,:5 we require to focus = a fre% picture1 x is only necess>y to remove ! d>k cov]+ f t "p ( ! ,cam]a :]e ! gr\nd glass is plac$4 ,! picture c be se5 )\t remov+ ! plate-box or ! :ole ( ! cov]+4 ,x is obvi\s t !re is no limit to ! numb] ( glasses t c be tak5 to ! field ( op]ations4 ,9 ?is way1 sev]al boxes hold+ a doz5 ea*1 c be /rapp$ toge!r & plac$ on ! ,cam]a1 "o by "o1 z occasion or opportunity may direct4 99 99 99 99 99 ,h4 ,silv]lock1 ,pr9t]1 ,doctors' ,commons4 ,,practical ,,photography1 ,,on ,,glass ,,& ,,pap]1 ,a ,manual1 ,,conta9+ ,,simple ,,directions ,,= ,,! ,,production ,,( ,,portraits1 ,,views1 c4 ,,by ,,! ,,ag5cy ,,( ,,light1 ,,includ+ ,,! ,collodion1 ,album51 ,calotype1 ,wax$ ,pap]1 & ,positive ,pap] ,processes4 ,by ,,*>les ,a ,,long4 ,f\r? ,edition1 price #as42 p] ,po/1 #as4 #b;d4 99 99 99 99 99 ,,illu/rat$ ,,photographic ,,catalogue1 ,,free ,,by ,,po/4 99 99 99 99 99 ,,spectacles3 ,,:5 ,,to ,,we> ,,& ,,h[ ,,to ,,use ,,!m4 ,,address$ ,,to ,,^? ,,:o ,,value ,,_! ,,sight4 ,by ,,*>les ,a4 ,,long1 ,,?ird ,,edition4 ,,po/ ,,free1 ,,sixp5ce4 99 99 99 99 99 ,,also1 ,a ,,descriptive ,,& ,,g5]al ,,catalogue ,,( ,,sci5tific ,,educational ,,in/rum5ts ,,& ,,*emical ,,prep>ations1 ,manufactur$ & ,sold by ,,bl& ,,long1 ,,opticians1 ,,philosophical1 ,,photographical1 ,,& ,,*emical ,,in/rum5t ,,mak]s1 ,,& ,,op]ative ,,*emi/s4 ,free by ,po/4 ,,publi%$ ,,by ,,bl& ,,long1 ,opticians1 ,philosophical & ,photographical ,in/rum5t ,mak]s to ! ,que51 #afc1 ,,fleet ,,/reet4 99 99 99 99 99 ,transcrib] ,note ,m9or typos correct$4 ,images mov$ to prev5t splitt+ p>agraphs4