,,survey ,,department1 ,,public ,,works ,,ministry ,,egypt4 99 99 99 99 99 ,,baharia ,,oasis3 ,,its ,,topography ,,and ,,geology ,,by ,,john ,,ball1 ,,ph4 ,d41 ,a4,r4,s4,m41 ,,assoc4 ,m4 ,,inst4 ,c4,e4 ,,and ,,hugh ,j4 ,l4 ,,beadnell1 ,f4,g4,s41 ,f4,r4,g4,s4 ,decoration ,,cairo ,,national ,,printing ,,department #aijc ,,contents4 99 99 99 99 99 ,pages4 ,,preface #e ,,chapter ,i4 -- ,,introduction #g ,,ii4 -- ,,surveying ,,methods ,,and ,,general ,,results #aa ,,iii4 -- ,,the ,,roads ,,connecting ,,the ,,oasis ,,of ,,baharia ,,with ,,the ,,nile ,,valley ,,and ,,with ,,other ,,oases #ag ,,iv4 -- ,,topography1 ,,with ,,notes ,,on ,,the ,,water-,,supply1 ,,inhabitants1 ,,etc4 #cg ,v4 -- ,,geology #dg ,,vi4 -- ,,antiquities #gc ,,plates4 ,,plate ,i4 -- ,map of the ,oasis geologically coloured at end ,,ii4 -- ,sketch ,map showing ,position of the ,oasis ,,iii4 -- ,villages and ,principal ,sources of ,water ,,iv4 -- ,section through ,western ,escarpment1 #aa kilometres north of south end of ,depression ,v4 -- ,diagrammatic ,section from hill #ae kilometres north-east of ,ain el ,haiss to the ,eocene-,cretaceous junction on desert to west ,,vi4 -- ,section from ,mandisha through ,jebel ,mayesra and ,conical ,hill to ,western ,plateau ,,vii4 -- ,map of the ,synclinal fold from ,jebel ,hefhuf to its termination in the ,western ,plateau1 #ac kilometres north-west of ,ain el ,haiss ,,viii4 -- ,sketch sections of ,eastern ,scarp ,,illustrations ,,in ,,the ,,text4 ,,fig4 #a4 -- ,section across ,syncline1 #ab kilometres north-west of ,ain el ,haiss #ff #b4 -- ,sketch shewing probable relations of ,eocene and ,cretaceous in ,anticline on ,western ,desert ,plateau1 #aa kilometres north-west of ,el ,qasr #fi 99 99 99 99 99 ,,preface 99 99 99 99 99 ,the geological examination of the ,oases of the ,libyan ,desert was commenced in #ahig1 when two parties were sent out to ,baharia ,oasis1 one under the charge of ,dr4 ,ball1 who1 with ,mr4 ,g4 ,vuta as topographer1 started from ,minia and explored the eastern half of the area1 while ,mr4 ,beadnell with ,mr4 ,l4 ,gorringe as his topographer started from ,maghagha and examined the western side of the oasis4 ,the expeditions commenced work in ,october1 and mapping on the scale of the whole area was surveyed before the end of the year4 ,the return traverses were made to ,minia by the first party via ,farafra to ,assiut by the second4 ,the following chapters and maps set forth the results of this joint exploration1 certain gaps being filled from the data of ,ascherson4 99 99 99 99 99 ,,baharia ,,oasis 99 99 99 99 99 ,,chapter ,i4 99 99 99 99 99 ,,introduction4 ,the ,oasis of ,baharia 7or ,northern ,oasis71 also known as the ,little ,oasis1 lies between the parallels #bg #dh and #bh #cj of north latitude1 and between the meridians #bh #ce and #bi #aj east of ,greenwich1 being thus situated in the ,libyan ,desert about #ahj kilometres1 or four to five days' march by camel1 west of the ,nile ,valley 7,sketchmap1 ,plate ,,ii74 ,like the other oases of the ,western ,desert 7,farafra1 ,dakhla and ,kharga7 to the south1 ,baharia is a large natural excavation in the great ,libyan plateau2 it differs1 however1 from those oases1 which are open on one or more sides1 in being entirely surrounded by escarpments1 and the vast number of isolated hills within the depression form an unique topographical feature4 ,in ,baharia1 as1 with the exception of ,dakhla1 in the oases generally1 the cultivated area bears only a very small proportion to the total oasis-area1 the remainder of the floor of the natural excavation being barren desert4 ,the oasis contains four principal villages1 all situated in its northern portion1 and it is in the neighbourhood of these that water1 and consequently vegetation1 is most abundant4 ,the early history of ,baharia is shrouded in an obscurity greater even than that surrounding the history of ,kharga4 ,that it was inhabited at a very early date is shown however by a stela of the reign of ,thothmes ,,ii 7about ,b4,c4 #afjj-aejj7 found there by ,ascherson1 by a tomb of the #aith dynasty 7,b4,c4 #acjj7 and fragments of two temples1 one dating from the reign of ,king ,apries 7,b4,c4 #ehh-egj7 and the other from the reign of ,amasis 7,b4,c4 #efi-ebf71 discovered by ,steindorff in #aijj1 and by the references to it in the ,ptolemaic inscriptions of the temple of ,edfu4 ,the oasis of ,baharia is referred to in the hieroglyphic inscriptions of its newly-discovered temples as 8the northern oasis of ,amenhotep10 and as 8the oasis ,huye02 by ,strabo it is called 8the second0 and by ,ptolemy 8the small oasis40 ,the ,romans have left traces of their occupation of ,baharia in an arch near the village of ,el ,qasr#a and other ruins1 as well as in numerous wells and underground aqueducts1 which latter are still used by the present inhabitants4 ,fragmentary ruins of churches and a ,coptic village attest the fact of the occupation of the place during ,christian times4 ,at present ,baharia1 along with the neighbouring oasis of ,farafra to the south1 is administered as part of the ,mudiria of ,minia1 and is fairly prosperous1 though lacking in enterprise to an even greater extent than is shown by the two southern oases of ,dakhla and ,kharga4 ,the first ,european traveller to reach the oasis of ,baharia appears to have been ,belzoni1#b who reached it from ,beni ,suef on ,may #bfth1 #ahai1 and after spending some eleven days there returned by the same route4 ,though his observations appear to have been correctly made1 the description of his travels is largely coloured by imagination1 and his map appears only to have been a rough sketch4 ,he erroneously confused ,baharia with the oasis of ,jupiter ,ammon1 whose temple he imagined he had found in the remains of the ,roman arch near ,el ,qasr1 the chief village of the oasis4 ,it is hardly necessary to remark that the oasis of ,jupiter ,ammon is really that now known as ,siwa1 situated some #cdj kilometres west-north-west of ,baharia4 ,the earliest connected modern account of the oasis of any value is that of ,cailliaud1#c who with ,letorzec visited the place in #ahbj on his way from ,siwa to ,farafra1 and during a stay of about six weeks examined and mapped some of its principal features4 ,he drew attention to its antiquities and gave a careful description of the hot springs and ancient aqueducts1 besides taking a number of observations of latitude and noting some of the topographical and geological features1 such as the occurrence of volcanic rocks in the oasis4 ,cailliaud records his meeting in ,baharia with ,hyde1 an ,english traveller1 who1 however1 does not appear to have published any account of his wanderings4 ,in the winter of #ahbc-ahbd ,baharia was visited by ,pacho in company with ,f4 ,muller4 ,in an account of ,pacho's travels#d published after his unhappy death1 there is no reference to his observations in this oasis beyond an indication of his route on the map4 ,wilkinson#e visited the oasis of ,baharia in #ahbe4 ,the ,rohlfs' expedition of #ahgd1f with the distinguished scientists ,k4 von ,zittel and ,w4 ,jordan as geologist and topographer respectively1 added very considerably to our knowledge of ,baharia1 more especially in the way of fixing precisely the geographical positions and levels of its principal points4 ,zittel1 however1 did not visit this oasis1 and in consequence its geological structure was not studied1 the few references to it made in the publications of the ,rohlfs' expedition being based on an examination of specimens collected by ,ascherson4 ,probably the most accurate map hitherto existing of ,baharia ,oasis is that of ,ascherson1#g who spent nearly three months there in #ahgf4 ,ascherson1 who entered the oasis by the road from the ,fayum and returned to ,samalut1 chiefly directed his attention to botanical observations1 but his memoir contains some valuable topographical and geological information which supplements that of previous and later observers in important measure2 he has also the distinction of finding the stela of the reign of ,thothmes ,,iii already referred to1 and the remains of an ,egyptian temple2 the latter is probably identical with one of those discovered by ,steindorff in #aijj4 ,the short memoir by ,capt4 ,h4 ,g4 ,lyons1 ,r4,e41#h published in #ahid1 brought together a number of observations on the geology of the ,libyan ,desert generally1 and his discovery of fossils1 referred to ,exogyra ,overwegi1 for the first time established the ,upper ,cretaceous age of the clays and sandstones forming the floor and lower part of the scarp in the northern end of the depression4 ,in #ahig the ,geological ,survey carried out its examination1 the results of which are set forth in the following chapters4 ,since the survey expedition1 ,baharia has been visited by ,steindorff1#i who during his five days' stay in the oasis made important additions to our knowledge of its antiquities4 ,these will be further referred to in the chapter on the topography of the oasis4 99 99 99 99 99 ,footnote #a3 ,this ruin was described by ,,cailliaud 7,voyage ,mro4 etc41 vol4 ,i1 p4 #ahc7 who records that in his time 7#ahbj7 only the central arcade remained standing4 ,steindorff found in #aijj that even this last fragment had fallen4 ,footnote #b3 ,narrative of the ,operations and ,recent ,discoveries within the ,pyramids1 ,tombs1 and ,excavations in ,egypt and ,nubia1 and of a ,journey to the ,coast of the ,red ,sea1 in search of the ,ancient ,berenice1 and another to the oasis of ,jupiter ,ammon4--,london1 #ahbj1 pp4 #cie-dcc4 ,footnote #c3 ,voyage ,mro1 au ,fleuve ,blanc1 an-del de ,fzogl dans le midi du ,royaume de ,sennr1 ,syouah et dans cinq autres ,oasis4 ,paris1 #ahbf4 ,the work consists of four volumes1 accompanied by numerous maps and plates illustrating the antiquities4 ,footnote #d3 ,relation d'un voyage dans la ,marmarique1 la ,cyrnaique et les ,oasis d',audjelah et de ,maradh4 ,paris1 #ahbg4 7,this date is probably wrong1 as a reference is made in the work1 7p4 ,,vii7 to the suicide of ,pacho on ,jan4 #bfth1 #ahbi74 ,footnote #e3 ,modern ,egypt and ,thebes4 ,london1 #ahdc1 vol4 ,,ii1 p4 #ceg-cga4 ,footnote #f3 ,see ,g4 ,,rohlfs1 ,drei ,monate in der libyschen ,wste1 ,cassel1 #ahge2 ,,jordan1 ,physische ,geographie und ,meteorologie der libyschen ,wste1 ,cassel1 #ahgf2 and ,,zittel1 ,geologie der libyschen ,wste4 ,cassel1 #ahhc4 ,jordan appears to have been the only member of the ,rohlfs' party to actually visit ,baharia4 ,he left the other members at ,lake ,sittra 7,n4 lat4 #bh #db #dj1 long4 #bg #d #bc1 ,e4 of ,green47 and entered ,baharia from the ,n4,w4 of ,el ,qasr2 after passing about #a days in ,baharia ,oasis he journeyed southwards via ,farafra to rejoin his colleagues in ,dakhla4 ,footnote #g3 ,zeitschrift der ,gesellschaft fr ,erdkunde zu ,berlin1 ,band #bj1 ,heft ,,ii1 #ahhe4 ,also ,dr4 ,schweinfurth's summary of ,ascherson's results in 8,petermann's ,mittheilungen10 #bb4 ,band1 #ahgf1 p4 #bfd4 ,footnote #h3 ,on the ,stratigraphy and ,physiography of the ,libyan ,desert of ,egypt4 ,q4 ,j4 ,g4 ,s4 ,nov1 #ahid1 pp4 #eca-edg4 ,footnote #i3 ,vorlafiger ,bericht ber seine im ,winter #ahii-aijj nach der ,oase ,siwa und nach ,nubien unternommenen ,reisen4--,knigl4 ,schs4 ,gesellschaft der ,wissenschaften zu ,leipzig1 #aijj1 p4 #bbf4 ,steindorff entered the ,oasis from ,siwa1 and returned from it via the ,fayum4 ,he appears only to have visited the northern part of ,baharia4 ,,chapter ,,ii4 99 99 99 99 99 ,,surveying ,,methods ,,and ,,general ,,results4 ,crossing the ,libyan ,desert from ,maghagha and ,minia respectively1 the two parties of the ,geological ,survey met at a joint camp close to ,zubbo1 one of the chief villages of the oasis4 ,it was desirable to fix this meeting-point as a primary station for the subsequent plotting of the maps4 ,cailliaud#aj gave the latitude of ,zubbo as #bh #ba #dg1 and its longitude as #bf #dc #df ,e4 of ,paris1 7equivalent to #bi #c #ee ,e4 of ,greenwich74 ,jordan gave for ,bawitti the position ,n4 lat4 #bh #ba #ab1 long4 ,e4 of ,greenwich #bh #ef #de4 ,taking the difference of latitude and longitude between ,bawitti and ,zubbo as found by the ,survey1 viz41 lat4 #ee1 long4 #d #af1 we have as the equivalent of ,jordan's latitude for ,zubbo #bh #bb #g1 and for his longitude #bi #a #a ,e4 of ,greenwich4 ,thus1 while there is a fair agreement between the two authors as regards latitude1 there is a difference of #b #ed in the values of the longitude4 ,the longitude is of course always the difficult matter in the geographical determination of places not easy of access4 ,cailliaud's value rests on the method of distance and azimuths1 both roughly determined only2 ,jordan1 on the other hand1 used the absolute though not very precise method of lunar distances measured with a sextant4 ,the ,survey parties depended entirely on direct measurement by means of measuring-wheels from known points in the ,nile ,valley2 the values obtained in this way are tabulated below#aa4 ,i4--,traverse from ,maghagha to ,zubbo4 ,maghagha ,railway ,station1 long4 ,e4 of ,greenwich #cj #ej #di ,recorded west departure1 ,maghagha to ,zubbo1 #ahggg km4 #a #ef #df ------------- ,giving long4 of ,zubbo #bh #ed #c ,,ii4--,traverse from ,minia to ,zubbo4 ,minia ,railway ,station1 long4 ,e4 of ,greenwich #cj #de #ci ,recorded west departure1 ,minia to ,zubbo1 #agfcb km4 #a #dg #ej ------------- ,giving long4 of ,zubbo #bh #eg #di ,,iii4--,traverse from ,zubbo to ,minia1 via the south end of the ,oasis4 ,recorded east departure1 ,zubbo-,minia1 #agdhg km4 #a #df #de ,minia ,railway ,station1 long4 ,e4 of ,greenwich #cj #de #ci ------------- ,giving long4 of ,zubbo #bh #eh #ed ,the arithmetic mean of these three determinations is #bh #ef #ee2 owing1 however1 to the breakdown of the measuring-wheel during the outward traverse from ,maghagha1 and the consequent necessity of estimating a part of the distance traversed by the time taken in marching1 the different traverses are not equal in value1 and the longitude finally adopted by the survey1 as the best approximation after investigation of the various sources of error in the measurements1 was #bh #eh #cd4 ,it would thus appear that ,jordan's position may be a little too far east1 the difference amounting to #b #bg1 or about #c kilometres1 while ,cailliaud's value would place the position at a rather less distance west of that adopted4 ,the survey observations confirmed the accuracy of ,jordan's latitude 7#bh #bb #g71 from which the value found by ,cailliaud differs1 as already remarked1 only slightly4 ,the surveying operations within the oasis were based on a rapid plane-table triangulation from a measured base line within it1 details being simultaneously sketched in1 on a scale of 4 ,the site chosen for the base was a level stretch of ground extending between the camp at ,zubbo and an isolated clump of date-palms to the north-east2 the length of this line was found by repeated wheel-measurement to be #chh kilometres4 ,the two parties ran off their triangulations from this base to the surrounding hills1 and carried on the mapping southward by plane-table1 taking stations chiefly on the hills and prominent points of the scarps1 and not meeting again till ,ain el ,haiss1 in the southern part of the oasis1 was reached4 ,here a test was made as to agreement of the two sets of maps1 only a small difference being found4 ,the position of ,ain el ,haiss1 as found by taking the mean of the two determinations1 is latitude #bh #b #aa ,n41 longitude #bh #ci #ai ,e4 of ,greenwich2 this places the spring about #d #ah east of ,jordan's determination 7lat4 #bh #a #ee ,n41 long4 #bh #ac #dg ,e4 of ,green474 ,the two parties made a third connection at the extreme south end of the oasis-depression4 ,our observations for this point give its latitude as #bg #dh #ac ,n41 and its longitude as #bh #cb #ai ,e4 of ,greenwich1 placing it very near the position shown on ,jordan's map4 ,the plane-table method making use of the magnetic meridian1 it was imperative to determine the amount of declination of the compass4 ,this was done at one point only1 viz41 at the south end of the oasis1 the value found 7by observation of the transit of ,polaris7 being #d #ej ,w4 ,the declination is fairly constant over the entire area1 except near the eruptive dolerite masses1 the magnetite in which causes a very sensible deflection of the needle2 in the neighbourhood of these1 however1 the surveying was carried on independently of the compass4 ,with regard to the yearly change of declination1 we have as data the previous observations of ,cailliaud1 who found the declination at ,zubbo in ,january1 #ahbj1 to be #ab #ac ,w42 of ,jordan1 who obtained the value #f #ef ,w4 in ,march1 #ahgd2 and of ,capt4 ,lyons1#ab whose observations with a ,bamberg declinatorium at ,mandisha in ,april1 #ahid1 gave the value #e #hi ,w4 ,tabulating these3-- ,observer4 ,date4 ,observed ,yearly change4 ,declination ,w4 ,cailliaud ,january #ahbj #ab #ac ,jordan ,march #ahgd #f #ccf #fc ,lyons ,april #ahid #e #hi #db ,geological ,survey ,december #ahig #d #ej #ec ,in view of the magnitude of the diurnal variation1 which may range up to #aj of arc1 and our present lack of knowledge of the distribution of this diurnal variation during the twenty-four hours1 a comparison after so short an interval as that between the last two observations is not to be trusted4 ,it would seem proved from the three foregoing observations that the yearly variation is at present decreasing1 the mean from #ahbj to #ahgd being #fc as against #db for the period #ahgd-ahid4 ,this decrease is also noticeable in comparisons of the declinations observed at different times in other parts of ,egypt4 ,the altitudes above sea-level of the principal points1 more especially in the eastern half of the oasis1 were determined with a ,watkin aneroid barometer1 which had been compared with the ,cairo standard mercurial barometer4 ,a fairly long stay was made at the ,zubbo camp1 and the altitude of this point may be regarded as fairly accurately fixed by the observations tabulated below3-- ---------------------------------------- ------------------------- ,zubbo4 ,cairo4 ,date and ,time4 ,bar4 ,bar4 ,difference4 7corrected74 7corrected74 ---------------------------------------- ------------------------- mm4 mm4 mm4 ,october #ab1 #f p4m4 #geced #gfaaj #gef #ad1 #h a4m4 #gedid #gfcjd #haj #f p4m4 #gecgi #gfaec #ggd #ae1 #g4cj a4m4 #gedee #gfbfj #hje #i p4m4 #gedcj #gfbfd #hcd #ag1 #g4ae a4m4 #gedah #gfahd #gff #ah1 #g a4m4 #gecgi #gfafd #ghe noon #gebeb #gfacd #hhb #ai1 #h4cj a4m4 #gebfe #gfbca #iff ,nov41 #bf1 #c p4m4 #gedha #gfcbi #hdh #bg1 #h a4m4 #gedha #gfdab #ica ---------------------------------------- ------------------------- ,mean #hcb ---------------------------------------- ---------------------------- ,since #a mm4 of mercury corresponds at the mean temperature of observation 7#bj ,c47 to #aad metres of height1 we have height of ,zubbo camp above ,cairo observatory #hcb #aad #idg1 or say #ie metres4 ,since the observatory is #cc metres above sea-level1 the camp at ,zubbo is #abh metres above sea-level4 ,jordan's altitude for ,bawitti1 which probably lies at about the same level as ,zubbo1 is #aac metres1 and when it is remembered that the point of the ,survey's observation lay not in ,zubbo itself1 but at the camp on elevated ground some #aj or #ab metres above it1 the results show a very good agreement4 ,at ,ain el ,haiss three barometric observations were taken on different days2 the comparison of these with the ,cairo records would place this point #aef metres above sea-level4 ,jordan's value is #abb metres1 the number of observations on which this figure is based not being stated1 it is difficult to say which of the two altitudes is the more probable4 ,at the remaining camps within the oasis1 and at the camps en route between the oasis and ,minia1 corresponding observations were taken1 the number of comparisons with ,cairo varying from two to seven at an individual station4 ,these observations being reduced and corrected by comparison among themselves gave the levels of the different camps with some degree of approximation to accuracy1 and the altitudes of intermediate points were found by interpolation based on barometric readings4 ,the resulting altitudes will be found on the map 7,plate ,i72 where no altitudes have been taken by the ,survey1 the values given by ,ascherson on his map have been inserted4 ,the statistics relating to the oasis1 and the methods of cleaning out wells1 are based on information supplied by the ,government officials at ,bawitti1 and may be taken as fairly reliable4 ,the particulars regarding water-supply are of course based mainly on direct observation during the survey of the villages4 ,the botany of the oasis having been fully studied by ,ascherson#ac no attempt was made by the ,survey to collect or describe the plants met with4 ,the abundant growths of the beautiful maiden-hair fern 7,adiantum ,capillus ,veneris7#ad will not1 however1 fail to strike even the casual visitor to the old ,roman aqueducts1 which still serve as the principal water-channels of the oasis4 ,nor were the animals of the oasis made the subject of any detailed observations1 although the existence of several of the species of lizards and snakes common to the ,nile ,valley was recorded1 and specimens collected when easily obtainable4 ,baharia is not rich in archological remains1 and1 with few exceptions1 even those existing were not examined by the ,survey1 though the positions of all ruins met with during the work were mapped4 ,in a later chapter will be found a connected though brief account of all the antiquities noted1 the publications of previous authors being referred to wherever the descriptions cannot be given from personal observations4 ,the principal point attended to in the topographical mapping by the survey was the accurate delineation of the bounding scarps of the oasis and of the large number of hills within it4 ,these features1 of which an accurate map was essential for any proper consideration of the geology1 had been only rapidly sketched by previous travellers1 and the precise shape of the oasis was still unknown4 ,in the cultivated spots1 on the other hand1 much had been done by ,cailliaud1 ,jordan and ,ascherson towards mapping the detail4 ,hence1 beyond re-determining the precise positions of the main points and the general limits of the cultivated areas1 no attempt at detailed mapping in these areas was undertaken by the ,survey parties1 it being felt that it would be preferable in the limited time available to concentrate attention on the almost totally unknown features1 so essential to any geological consideration1 rather than to devote considerable time to the details of the inhabited spots4 ,thus1 while the field maps resulting from the survey represented the oasis for the first time in its true shape1 and the hills within it in their true relative magnitudes and positions1 they fell somewhat short of the maps of ,ascherson and ,cailliaud in the number of springs1 ruins1 etc41 shown4 ,the more important ruins overlooked by the survey have1 however1 been inserted approximately from existing maps1 and the whole result 7,plates ,i1 ,,iii and ,,vii71 is an advance on the existing representations4 ,the geology of the oasis was very carefully investigated1 this being a field in which comparatively little had been done1 and a number of very interesting results were obtained4 ,the principal points in this connection worthy of note resulting from the detailed examination of the scarps and hills are-- 7i7 ,the existence of a marked unconformity between the ,upper ,cretaceous and ,eocene strata1 thus confirming the unconformity between these two great systems which had been noted#ae earlier at ,abu ,roash2 this unconformity has now been remarked in many parts of ,egypt4#af ,the palontological proofs of this unconformity were obtained from the western scarp1 the beds of the eastern side1 though they show the same thickening1 being much poorer in fossils2 7ii7 ,the occurrence of an extensive series of ,upper ,cretaceous beds of ,cenomanian to ,danian age within the depression and forming a large part of the desert to the west2 7iii7 ,the precise extent and relations of the dolerite capping some of the sandstone hills in the north of the depression2 7iv7 ,the existence of well-marked folding having an important bearing on the origin of the oasis2 7v7 ,the presence of ferruginous sandstone deposits of later origin than the primary formation of the oasis-hollow1 though long anterior to the date when the work of excavation1 which gave the oasis its present form1 took place4 ,these points will be found discussed at some length in the chapter on the geology of the oasis4 99 99 99 99 99 ,footnote #aj3 ,op4 cit41 vol4 ,,iv4 ,footnote #aa3 ,the positions of the two points of connection in the valley were determined by ,capt4 ,lyons in #ahif4 ,the return traverse via ,farafra to ,assiut is left out of consideration owing to its great length and consequent low value in the determination of the longitude of ,zubbo4 ,it agrees however1 very closely with the others1 owing to compensation of errors4 ,footnote #ab3 ,,lyons1 ,proceedings of the ,royal ,society1 vol4 #ga4 ,footnote #ac3 ,op4 cit4 ,footnote #ad3 ,the occurrence of this fern in the ravines of the ,fayum may also be recorded here4 ,footnote #ae3 ,,beadnell1 ,h4 ,j4 ,l41 ,geological ,magazine4 ,jan41 #aijj1 ,no4 #dbg1 pp4 #df-dh2 ,the ,cretaceous ,region of ,abu ,roash1 near the ,pyramids of ,giza4 ,geol4 ,surv4 ,egypt1 ,report #aijj1 ,part ,,ii1 #aijb4 ,footnote #af3 ,see ,reports of the ,geological ,survey on ,farafra1 ,kharga and the ,eastern ,desert4 ,,chapter ,,iii4 99 99 99 99 99 ,,the ,,roads ,,connecting ,,the ,,oasis ,,of ,,baharia ,,with ,,the ,,nile ,,valley ,,and ,,other ,,oases4 ,the roads traversed by the ,survey parties between ,baharia and other places are three in number1 viz41 from near ,maghagha and from ,minia in the ,nile ,valley1 and from ,baharia to ,farafra ,oasis4 ,other well-known routes run from the ,fayum1 from ,bahnessa1 ,samalut 7,ascherson7 and ,delga1 in the ,nile ,valley1 from ,alexandria1 via ,mogara1 and from ,siwa 7,jordan1 ,cailliaud74 ,the ,survey's return traverse to ,minia from the south end of ,baharia did not follow any defined road1 but kept on the open plateau on a course computed from the known positions of the points of departure and destination4#ag ,sidenote3 ,road from ,feshn and ,maghagha to ,baharia4 ,the road from ,feshn and ,maghagha to ,baharia leaves the edge of the ,nile ,valley cultivation at ,qasr el ,lamlum ,bey1 which bears #ea west of true north from ,maghagha railway station1 and is distant #aed kilometres4 ,from this point the road is well-defined and easily followed right into the oasis4 ,in the following description the distances are given from the edge of the ,nile ,valley cultivation4 ,the road at first leads over a strip of drift sand1 half a kilometre broad1 with short prickly scrub1 passing a white mosque on the left and then turning off somewhat to a direction #bf south of west1 and continuing in a straight line for #ae kilometres over an undulating gravelly plain4 ,the high prominent cliffs1 about #g or #h kilometres to the north-west1 are the flanks of ,jebel ,muailla1 and a valley known as ,wadi ,muailla leads through them to the ,wadi ,rayan in the ,fayum depression4#ah ,at #ai kilometres the valley scarp1 with a number of isolated peaks1 is approached on the right1 while ridges and low mounds form the plain below1 well-marked lines of drainage running from here in a south-east direction towards the cultivation4 ,at #bc kilometres the scarp runs back1 enclosing a large bay1 across which the road runs and ascends to the plateau beyond at #bgh kilometres4 ,numerous isolated parallel sand-dunes in the form of small ridges are seen running out into the bay from the cliff at the far end1 all lying slightly west of north and east of south1 or parallel to the normal wind direction4 ,the escarpment bounding the ,nile ,valley at this point is only some #ae metres in height1 being thus quite insignificant compared with the cliffs on the east side4 ,the plateau here was found to be about #adj metres above the cultivation1 the road having risen gradually throughout4 ,the latter continues for about #a kilometres across the strip of plateau when it again descends1 making a slight detour to the left for easy descent4 ,it then continues #i south of west1 slightly winding1 over gravelly undulating ground4 ,at #ca-cb kilometres a line of low hills is passed on the right1 while a dark well-marked range lies #f-g kilometres to the left4 ,a ridge of sandstone1 known as ,jebel el ,ghudda1 is passed on the right at #de kilometres1 from the end of which a small dune runs out2 beyond1 the plain resumes its monotonous undulating character1 a low ridge being crossed at #fa kilometres4 ,there1 the road1 consisting of a number of more or less parallel well-marked narrow paths worn by camels1 which have a somewhat general habit of marching in line one behind the other1 changes its direction to #cf south of west1 falling gradually in level until a patch of scrub is reached #f kilometres further on4 ,this scrub was dead at the time of the visit1 and furnished a useful supply of fuel4 ,from this point the course is #g south of west 7true71 which direction is maintained for the next #db kilometres over a remarkably monotonous undulating gravel-covered desert1 the typical 8serir0 of the ,arabs4 ,at #ib and #ic kilometres some more patches of dead scrub were passed on the right1 while logs of silicified wood were noticed strewing the plain on the left4 ,an ,arab grave was met with at #if kilometres1 while skeletons of camels lie about near the roadside at frequent intervals2 at #aaj kilometres the eye of the traveller is relieved by a small grove of green thorny flat-topped acacia trees 7,acacia nilotica1 or 8sunt0 of the ,arabs7 with a patch of coarse grass2 four gazelle 7probably ,gazella dorcas7 were observed browsing on the scrub here4 ,the course now continues #ab south of west1 over gently undulating gravelly 8serir01 until the eastern scarp of ,el ,bahr is reached at #abe kilometres from the cultivation of the ,nile ,valley4 ,the 8serir0 or undulating gravelly type of desert then ceases4 ,el ,bahr is a depression1 some #fj-gj metres deep1 cut out in white limestone rocks2 its breadth at the point crossed by the road was #h kilometres4 ,within it are several high prominent hills1 one of which near the centre on the left side of the road is called ,jebel ,gar ,marzak4 ,the bottom of the depression was quite green with vegetation2 sufficient water is said to fall every year to keep these plants alive1 and in #ahid rain is said to have fallen to such an extent that a pool of considerable size was formed2 the silt deposited by this is plainly visible at the present time4 ,a good deal of blown sand occurs within the depression4 ,el ,bahr evidently corresponds to the ,bahr ,bela ,ma1 7river without water7 figured on some authors' maps1 which has been frequently but erroneously referred to as an old river-course2 although this idea was shown to be untenable by ,zittel#ai and ,ascherson#bj it has subsequently been maintained by non-scientific writers4 ,no traces of any river deposit occur in the depression1 which consists simply of a series of unconnected depressions1 eroded by wind-borne sand4#ba ,the track leaves the depression at #acd kilometres1 rising over heavy sand2 it then continues #c north of west4 ,the character of the desert has now completely changed1 and instead of the smooth undulating gravelly 8serir10 its surface is rough and hummocky1 being formed of hard bare limestone1 cut up into sharp knobs and grooved into furrows by the powerful action of wind-borne sand2 it resembles closely the surface of the rough open sea4 ,this type of desert is spoken of as 8kharafish0 by the ,arabs4 ,while the 8serir0 forms an ideal surface for travelling over1 the 8kharafish0 is the worst imaginable1 the innumerable hillocks necessitating incessant small deviations1 while the hard rough surface is in some places very troublesome to camels2 moreover1 an extensive view is out of the question and no tracks are visible on the surface1 so that the road is easily lost except where marked by frequent cairns built of loose stones4 ,occasional patches of blown sand are here met with1 and the first well-marked dunes were crossed at #ada kilometres4 ,from here onwards for kilometres the whole area was more or less sandy with occasional narrow well-marked ridges or dunes1 running almost due north and south1 and varying in breadth from that of a single line to a number of parallel ridges side by side half a kilometre broad4 ,the largest dune of this group at #adf kilometres is known as ,ghard el ,shubbab4 ,the steepest sides are those facing west where the angle may reach #cj4 ,at the particular locality crossed by this road the sand area is very easily crossed1 a circuitous route being followed in order to take advantage of the flatter dunes with the easiest slopes when crossing the steeper ridges4 ,probably the road crosses at one of the easiest points4 ,this remarkable line of dunes1 known as the ,abu ,moharik1 has its origin in the neighbourhood of the oasis of ,mogara and runs southward1 almost without a break1 across the desert until ,kharga is reached1 whence with a slight break owing to the broken character of the ground it continues southward within the oasis-depression4 ,the total width of the sand-belt on the road under description is about #f kilometres4 ,at #aec to #aef kilometres a number of black conical hills1 ,gar el ,hamra1 are situate from #a to #b kilometres from the road on the south side4 ,one or two more sand-dunes were crossed and then the road1 maintaining its direction of #b-c north of west1 lay over a more or less uneven dark-coloured limestone desert broken up into a number of small hills4 ,at #afi kilometres a broad ridge of sand-dunes was encountered1 running #ah west of true north4 ,these light yellow dunes afford a beautiful and remarkable sight1 running northwards away to the horizon over a dark brown-coloured desert in an almost perfectly straight line and with a sharply maintained junction-line between the edge of the sand and the desert surface adjoining4 ,within a few hundred metres of the western side of the sand-dunes the road commences the descent from the plateau into the oasis-depression4 ,the road enters at the most northerly extremity of the oasis1 the descent being particularly easy at this point1 passing the large dark-coloured hill1 ,jebel ,horabi 7or ,morabi871 on the right almost immediately afterwards4 ,a fine view of the depression is obtainable from the top of the escarpment1 a broad low-lying expanse1 bounded by steep escarpments or walls1 stretching away to the south1 its monotony relieved by several large flat-topped hill-masses1 near which1 on the lowest portions of the floor1 dark areas1 the cultivated lands and palm-groves can be distinguished4 ,the road crosses the depression in a south-westerly direction1 passes a spring known as ,ain el ,gidr1 the first watering place1 and divides in front of the great hill-masses separating the two groups of villages1 the eastern branch keeping close under the eastern scarp of ,jebel ,mayesra1 to avoid a large area of soft salty ground1 and leading to the villages of ,zubbo and ,mandisha1 ,while the western branch continues its course to the cultivation surrounding ,el ,qasr and ,bawitti4 ,the distance by this road from ,qasr el ,lamlum ,bey to the village of ,zubbo is #aij kilometres and to ,bawitti #aie kilometres4 ,sidenote3 ,geology of the ,feshn-,baharia ,having now described the topographical features of this road1 the chief geological characters may be noticed4 ,the plain between the ,nile ,valley cultivation and the scarp of the plateau is covered with sandy gravel1 partly downwash from the higher ground in ,recent times1 and partly the remains of definite gravel deposits belonging to the ,nile ,valley ,pleistocene series4#bb ,the pebbles now found strewn over the plain consist chiefly of flints1 doubtless derived from the ,eocene limestones forming the deserts on both sides of the ,nile ,valley1 and occasional pebbles of hard felspar porphyry which must have originally been derived from the igneous massifs of the ,red ,sea ,hills4 ,both are well rounded1 although the former are frequently broken up into angular fragments by temperature changes4 ,white granular beds of gypsum1 of various degrees of impurity1 crop out on the plain in places1 and in all probability there was in ,pleistocene times an extensive deposit of this mineral all over the surface of the low-lying country4 ,in the desert lying between the ,fayum and the ,nile ,valley further to the north1 these gypseous beds occur of great thickness and wide extent1 and the deposits crossed on this road are doubtless part of the same series4 ,the cliffs of ,jebel ,muailla to the north are capped by a hard dark bed of limestone1 which weathers with a vertical face1 while the more gentle slopes1 generally more or less hidden with sand1 are doubtless formed of softer limestones1 marls1 and clays4 ,during the survey of the ,fayum 7see foot-note1 p4 #ag7 the hills surrounding ,wadi ,muailla were found to be formed of ,lower ,mokattam beds 7,middle ,eocene7 and the hills seen from this road are doubtless composed of the same beds4 ,the ridges crossed at #bj kilometres are formed of hard1 compact1 close-grained crystalline limestone1 covered with more or less gypsum and flint gravel2 the limestone beds forming these ridges show dips which suggest the existence of a fault running ,n4,e4-,s4,w41 parallel to the trend of the cliff behind1 and this may be part of the extensive faults and folds of the ,nile ,valley4 ,in one small hill 7#bb kilometres7 shales with ,ostrea were noticed at the base1 with occasional hard oyster-limestone bands2 the upper part was formed of #aj metres of gravel consisting of well-rounded limestone pebbles4 ,this superficial deposit must be classed as ,pleistocene and may be a sea-beach1 though no conclusive evidence was obtainable on this point4 ,the escarpment passed at #bc kilometres is capped by a bed of white limestone1 shales forming the slope1 but was not examined at close quarters4 ,the floor of the bay formed by the receding cliff shows outcropping brown limestone with ,ostrea1 and the escarpment on the far side is capped by a hard white crystalline limestone with much flint1 the latter forming bands4 ,on the surface is a thin calcareous gypseous gravel deposit1 doubtless of the same age as the gypseous beds already mentioned as occurring on the plain below4 ,the flanks of the scarp are hidden by downwash4 ,the cliff bounding this strip of plateau1 #a kilometres further on1 is composed of the same beds1 the limestone being here silicified1 with large silicified ,conid4 ,with regard to the age of these limestones and clays they are probably equivalent to part of the ,lower ,mokattam series already mentioned as forming the hill-masses round ,wadi ,rayan1 although no ,nummulites gizehensis beds were observed in the sections examined4 ,a conspicuous black knob among the low gravelly hills left two kilometres on the right at #cb kilometres1 was found to be a neck of hard dark andesitic basalt1 one of the few occurrences of igneous rocks in the ,western ,desert4 ,several other similar looking dark hills were in sight1 but time did not admit of their examination4 ,the dark well-marked range #f-g kilometres to the left of the road is probably identical with a range of hills occurring #aj kilometres west of ,bahnessa1 which was mapped#bc during the survey of the ,nile ,valley in #ahii1 and found to consist of a mass of andesitic basalt similar to that forming the small neck on this road4 ,doubtless they are both parts of the same intrusion4 ,the surface of the plain is still composed in part of gypseous deposits1 with occasional outcrops of the underlying limestone1 the surface being covered with a certain amount of loose sand with rounded flints and their broken fragments4 ,in the neighbourhood of ,jebel el ,ghudda the plain consists of limestone with numerous individuals of the large ,nummulites gizehensis1 and are thus of ,lower ,mokattam age4 ,much of the limestone is crystalline4 ,the hills of ,jebel el ,ghudda are formed by younger overlying beds consisting of hard silicified sandstones and grits 7quartzites71 which lithologically are very similar to the beds of ,jebel ,ahmar near ,cairo1 of ,oligocene age4 ,they may1 however1 belong to the ,upper ,eocene series1 so well developed above the ,upper ,mokattam in the escarpments to the north of the ,fayum1 as this series contains similar beds with similar silicified wood4 ,they enclose bands of coarse conglomerate and have a peculiar blackish burnt colour4 ,occasional patches of these grits are here and there met with right up to the depression of ,el ,bahr1 and the silicified wood passed at #ib kilometres belongs to the same series of beds4 ,from the scrub area at #ic kilometres till the road approached ,el ,bahr there was hardly a sign either of the grits or of section anywhere met with on this road4 ,the depression is cut down through the upper series of sandstones and grits into the fossiliferous white limestones and sandstones below4 ,the eastern scarp showed the following beds3-- ,top4 ,soft white ,sandstone4 ,limestone with ,nummulites gizehensis4 ,,middle ,lower ,,eocene4 ,limestone with ,ostrea1 ,exogyra and ,mokattam4 ,lucina1 etc4 ,the floor is covered in places with numerous weathered out individuals of ,n4 gizehensis and large oysters4 ,some of the hills occurring within the depression showed brown siliceous limestone overlying white limestones with beds containing ,nummulites gizehensis1 ,ostrea1 etc41 below4 ,in some of these hills the beds show evidences of folding1 which like that within the ,baharia ,oasis may have partly caused the formation of the depression by bringing the softer beds to the surface within the reach of the agents of denudation4 ,on ascending the western scarp1 beds with ,ostrea1 ,turritella1 etc41 were crossed1 and near the top thick yellowish sandstones crowded with ,ostrea occur4 ,two of the species of ,ostrea were afterwards examined by ,dr4 ,blanckenhorn1 one of which he regarded as nearly related to ,o4 ,fraasi1 and the other as a new species with affinities to ,o4 ,hess1 ,may-,eym4 ,probably the whole of these fossiliferous beds belong to the ,middle ,eocene ,mokattam ,series2 the lower beds with ,n4 gizehensis1 are certainly ,lower ,mokattam1 and probably the upper1 although the latter may represent the base of the ,upper ,mokattam4 ,whether the upper bed of sandstone capping the eastern scarp belongs to the same series or is equivalent of the silicified grits with silicified wood passed further back is open to some doubt4 ,beyond the ,bahr the desert is formed of a hard limestone much cut up by the action of wind-borne sand as already mentioned4 ,this limestone is very unfossiliferous1 occasional obscure nummulites seen on fractured or smooth surfaces being the only indications of its ,eocene age4 ,the conical-peaked hills of ,gar el ,hamra on the left of the road at #aea kilometres were so striking that a detour was made specially to examine them4 ,they were found to be composed of black ferruginous silicified sandstone or quartzite at top1 with false-bedded sandstones below4 ,they overlie nummulitic limestones forming the surrounding plain1 and are not improbable ,post ,eocene lacustrine deposits1 similar to those within ,baharia ,oasis 7see pp4 #fj-fb74 ,from here onwards up to the oasis-depression the plateau consists of hard brown limestone1 more or less silicified1 and contains nummulites and oysters4 ,the ,eocene strata1 thus extend right up to the escarpment of the depression on the north side of the oasis4 ,the geological structure within the depression will be found discussed in ,chapter ,v4 ,sidenote3 ,road from ,minia to ,baharia4 ,road from ,minia to ,baharia4--,the cultivated land extends for some #i or #aj kilometres west of ,minia town1 and at the time of the ,survey expedition 7early in ,october1 #ahig7 this area was mostly covered by flood-water4 ,boats were therefore taken to the edge of the desert1 and the march west was commenced from ,nasl ,nadiub ,lengat1 a small village on the cultivation-limit in lat4 #bh #f #bd1 long4 #cj #ci #de ,e41 bearing from ,minia railway station #i north of west1 distance very nearly #aj kilometres4 ,the road westward being ill-defined1 and the party knowing that any course followed a little north of west would surely lead to the oasis1 no attempt was made to follow the track precisely1 the course being rather chosen to take advantage of commanding points so as to map as much topography as possible en route4 ,as will be seen further on1 however1 the road was struck some distance before reaching the oasis1 and was thence followed to ,zubbo4 ,on leaving ,nasl ,nadiub ,lengat the course first taken was about #cb north of west4 ,the desert here rises very gradually from the flood-level1 7i4e4 about #dj metres above sea-level71 there being no cliff bounding the ,nile ,valley on the ,west at this point4 ,for about #f kilometres the ground was sandy1 with occasional patches of flood-water and some grass2 then came a stretch of level gravelly ground1 and at #aa kilometres some low sand-dunes were crossed4 ,the course was now changed to about #c south of west1 and at #ad kilometres a descent was made from the gravel-plain into a limestone-depression1 with gravel-capped eminences on either side4 ,at #bb kilometres the gravel-strewn plain was again come on1 a few low mounds1 also gravelly1 being passed at #ca kilometres1 and camel-tracks1 doubtless part of the ,minia-,baharia road1 being noticed coincident with the survey line at #cg kilometres4 ,continuing following these tracks1 another camel-road was found to branch off at #df kilometres to the north-west4 ,the march was continued along the same track going a little more south of west1 over a monotonous gravelly plain1 with limestone showing through it in small patches1 till at #gh kilometres from ,nasl ,nadiub ,lengat a conspicuous though small mass of fissile gritty limestone was come on1 which afforded a good survey-station4 ,north and west of this are low gravel-covered hills4 ,turning a little north of west1 a large extent of low table-like hills was seen on the south4 ,at about #ij kilometres low plateaux of limestone1 capped by gravel1 closed in so as to form a defile about a kilometre wide1 through which the line of survey passed1 and at #ih kilometres a large sandy and gravelly depression1 bounded by limestone scarps and containing numerous large limestone hills1 was entered4 ,within the depression the course followed was about #cj north of west1 so as to map roughly the escarpments on either hand4 ,about #aj kilometres from the point where the depression is entered a long stretch of heavy sand was crossed beyond which tracks going west were come on1 and the edge of the limestone plateau on the left curved round so as to cross the road4 ,ascending this low scarp at #aaf kilometres1 the course lay over white limestone1 with sharp angular flints on its surface1 and low limestone hills on either side4 ,at #abd kilometres the broad belt of sand-dunes1 the ,abu ,moharik1 was reached4 ,the dunes1 which are of considerable height1 run nearly north and south1 and have a total width of some #d kilometres2 they formed the most serious obstacle of the entire journey4 ,beyond the dunes is a hard limestone plain1 crossed by a low ridge 7forming part of a higher plateau7 at #acf kilometres4 ,beyond this ridge are low limestone-hills on either side1 the floor being generally of hard white limestone4 ,at #aea kilometres an oval depression in the limestone plateau1 with its longer axis 7about #d kilometres7 running ,w4,n4,w41 was entered2 this depression is full of hills of white chalk1 which also forms the floor here4 ,ascending the opposite scarp of the depression at #aei kilometres1 a narrow strip of higher plateau of much harder limestone was crossed1 the edge of the scarp of the oasis of ,baharia being reached at #afj kilometres1 after marching for #eg hours from ,nasl ,nadiub ,lengat4 ,up to this point there had been a gradual rise of the ground1 from #dj metres at the ,nile ,valley to #bfe metres above sea-level at the edge of the oasis4 ,the descent into the oasis is not difficult1 the scarp being sandy and the fall gradual4 ,at about #d kilometres ,w4,n4,w4 from the edge of the scarp is the first well or spring of the oasis1 ,ain ,gelid 7lat4 #bh #ai #bh ,n41 long4 #bi #h #dj ,e4 of ,greenwich71 a small pool surrounded by grasses and with a tree growing near it4 ,the barometric observations gave for this point the level #acd metres above sea1 so that the total drop from the edge of the scarp is about #acj metres4 ,from ,ain ,gelid the village of ,zubbo bears about #ae north of west1 and is some #ag kilometres distant1 but owing to the hills between the two places necessitating a slight detour1 the actual distance to be traversed is a few kilometres greater4 ,sidenote3 ,geology of the ,minia-,baharia ,road4 ,the road from ,minia to ,baharia shows essentially the same geological features as the one from ,maghagha already described4 ,the gravel which strews so large a portion of the road to the east is mainly composed of quartzite and flint pebbles1 of a prevailing brown colour4 ,some of the rounded flints show a concentric structure1 and are evidently segregation-nodules derived from chalk-beds2 a very fine specimen of these1 measuring some #bj c4m4 in diameter1 of almost perfectly spheroidal form1 was obtained4 ,the gravelly covering is frequently very thin1 the limestones underlying it showing through in numerous places4 ,no evidences of the precise age of this gravel have come to the authors' knowledge1 but it is certainly ,post-,eocene4 ,it appears to be the same formation which is found covering the edge of the plateau west of ,girga#bd and south of ,assuan 7east bank7 and at various other points of the ,nile ,valley4 ,it overlies beds of every age from the ,nubian ,sandstone to the ,lower ,mokattam4 ,the limestones which underlie the gravel near the ,nile1 and which are well exposed in the depression crossed #ad kilometres from the edge of the cultivation1 are crowded with nummulites of various species1 ,n4 gizehensis and ,n4 curvispira being specially common2 these rocks belong therefore to the ,lower ,mokattam ,series 7,middle ,eocene74 ,the limestone underlying the gravel further west 7from about #cj to #hj kilometres west of the cultivation-limit7 is only seen in small patches2 it varies in character1 being in some places loose and tufaceous in texture1 and in others gritty and fissile1 passing into a calcareous grit4 ,the mass of gritty limestone at #gh kilometres1 noted above1 is about #f metres in length by #b metres high and broad2 it shows a peculiar stalagmitic structure1 the layers always parallel to the free surface4 ,several smaller masses found around all show a similar structure1 and where the rock is exposed on the floor concentric fissuring is frequently seen4 ,the sand which strews the surface here is largely calcareous1 being doubtless in part derived from the gritty limestones4 ,the eastern part of the low hills lying to the left of the track at about #he kilometres from the cultivation-limit show the following section 7total height about #ac metres73-- ,top4 #a4 ,flinty gravel1 the flints containing nummulites4 #b4 ,tufaceous white limestone4 #c4 ,hard pink siliceous limestone4 #d4 ,fissile sandy marls and gritty limestones4 ,on the western part of the hills the gravel covering is absent1 the succession here seen being3-- ,top4 #a4 ,sandy marls1 #fj centimetres4 #b4 ,very hard pink calcareous grit1 #a metre4 #c4 ,white sandy marl1 fissile1 #b metres4 #d4 ,soft red and white marls1 #aj metres4 ,no fossils were seen in these beds except the nummulites in the gravel1 which prove the latter to be at least in part derived from ,eocene deposits4 ,the hills left of the road a little further on show the following section3-- ,top4 #a4 ,flinty gravel2 thin deposit unconformably overlying the limestone below4 #b4 ,tufaceous white limestone 7thin bed74 #c4 ,hard grey crystalline limestone1 #ab m4 #d4 ,slope of sand and debris1 doubtless covering soft marly beds4 ,on entering the depression at #ih kilometres a band of earthy reddish limestone with ,bryozoa is crossed1 this bed appearing to overlie the fissile sandy limestone already mentioned4 ,from here a good view of the numerous limestone hills is obtained1 the top beds of hard limestone showing out sharply from the lower sand-covered slopes2 the beds show a stratigraphical depression here in addition to the eroded surface depression4 ,the floor of the depression is covered with sandy gravel and ,ostrea shells2 an examination of the left scarp1 about #c kilometres after entering the hollow1 showed the following succession of beds 7total height of section #bj metres73-- ,top4 #a4 ,hard white limestone with numerous shell-casts and containing some shaly layers1 #c m4 #b4 ,debris-covered slope of softer beds with ,ostrea shells1 #af m4 #c4 ,red earthy limestone with shells at base of hill4 ,one of the hills within the depression1 to the left of the track about #f kilometres further on1 showed in a face of about #bh metres the following beds3-- ,top4 #a4 ,hard white limestone1 sand-eroded4 #b4 ,brown fossiliferous limestone4 #c4 ,white limestone with many small fossils4 ,the slopes of this hill were covered with large black ,ostrea shells4 ,the floor of the depression further west showed limestones of varying character1 frequently highly fossiliferous4 ,beyond the depression the ground passed over was mainly white limestone1 strewn with large sharp angular flints1 and many spheroidal flint-masses derived from the limestones4 ,the surrounding hills show that we have here two white limestones with brown beds between1 the floor and the hillcaps being white1 while the feet of the hills are brown4 ,the plateau-rock near the great belt of sand-dunes is a hard white limestone with large ,conid4 ,just beyond the dunes this rock is very siliceous1 the exposed surfaces showing a smoky-black colour2 the rock is however quite white on fracture4 ,the hills rising from the plateau here consist entirely of limestone1 beds of white chalk alternating with harder yellowish and brown limestones1 in which no fossils were noticed4 ,further on the plateau rises1 so that at the entrance to the depression the surface is formed of the same brown limestone-beds which are seen in the hills behind4 ,the hills within the oval depression here are composed of alternations of chalky with harder limestones4 ,the narrow ridge which separates the depression just described from the oasis-depression is of very hard horny siliceous limestone4 ,on the descent into the oasis the following beds are passed through3-- ,top4 #a4 ,very hard yellowish and reddish-brown siliceous limestone1 in part crystalline4 #b4 ,fissile sandy limestone4 #c4 ,soft yellow ochreous marly limestone4 #d4 ,greyish-white chalky limestone1 with ferruginous layers4 #e4 ,sand-covered slope1 mainly consisting of clays4 ,it seems probable that the entire mass of the limestones forming the surface of the plateau are ,eocene1 occupying an horizon in and below that of the ,mokattam series4 ,that the fissile sandy limestone and calcareous grit cannot be the equivalent of the ,post ,eocene sandstone deposits encountered on the road from ,maghagha is proved by their being intercalated in the ,eocene limestones of the plateau4 ,sidenote3 ,traverse from south end of ,baharia to ,minia4 ,the return journey from ,baharia ,oasis to ,minia was made1 as already mentioned1 across the open desert1 not following any road4 ,the starting-point was the point on the southern scarp of the oasis1 where the ,farafra road leaves ,baharia4 ,our observations give for the position of this point#be lat4 #bg #df #ac ,n4 long4 #bh #cb #dg ,e4 of ,greenwich2 height above sea level1 #bdg metres4 ,the course was shaped so as to reach the village of ,nasl ,nadiub ,lengat1 whence the outward traverse had started1 so as to give a closed polygon of survey-lines4 ,the following topographical and geological notes were taken on the journey4 ,the first #b kilometres of the way1 going about ,s4,s4,e41 lay over a plateau of sandy limestone1 often mammilated and strewn with limonite-fragments4 ,sand-dunes of small size were passed on the left4 ,an ascent was then made of some #ce metres on to a flat-topped ridge1 consisting of white and yellow marls and clays1 capped by a horizontal bed of hard brown calcareous grit1 passing into brown crystalline limestone with calcite shell-casts4 ,on this ridge1 which is about #fjj metres in width at the place seen1 a turn was made so as to go almost due east4 ,the descent from the ridge on the other side is on to a plain strewn with whitish-brown laminated and mammilated limestone and some limonite1 and from the plain rise hills showing the same structure as the ridge just crossed4 ,a camel-road running south was crossed #g kilometres from the starting-point1 and beyond this1 the ground having gradually risen to the level of the brown calcareous grit1 we came among numerous low hills2 these consist of white chalk beds1 capped by sandy greyish limestone and then by thick beds of harder greyish-white limestone1 weathered grey on the surface4 ,no fossils were seen here1 but continuing the journey east1 over uneven ground of white and greyish limestone of considerable hardness1 a small hill was met with1 at about #ab kilometres from the starting-point1 and found to consist of limestone with ,nummulites1 and these foraminifera were found in great abundance a little further on4 ,the finding of these forms1 so distinctively ,eocene1 is important as showing that whatever the age of the limestones at the actual edge of the south part of the oasis may be1 the beds forming the plateau only a few kilometres east of the oasis are1 like those which form the top of the northern scarp1 of undoubted ,eocene age4 ,the nummulites were visible in the rocks of the plateau till about #ag kilometres from the starting-point1 none being noticed further on till the neighbourhood of the great sand-dunes was reached4 ,at #be kilometres a slight depression containing numerous hills of white chalk was entered4 ,the floor of this depression1 #bfg metres above sea-level1 is strewn with fragments of crystalline calcite1 probably derived from veins or druses in the chalk4 ,the beds here dip slightly to the south4 ,about #c kilometres further on the beds dip about #e ,e4,s4,e41 so that higher beds were come on2 the dip however soon diminished4 ,at #bi kilometres the plateau rock consisted of porous siliceous limestone1 generally white1 but in places yellow1 closely resembling that found capping the scarp in the northern parts of the oasis4 ,the march was continued over white limestones of varying hardness1 with flints and fragments of chalcedony on the surface1 and numerous low limestone-hills4 ,at #cf kilometres a chalky area was entered on1 covered with countless small rounded hills of chalky limestone2 these hills1 of which there are literally millions1 cover the ground like haycocks in a field2 they are generally about #bj metres high1 and up to #ajj metres in diameter4 ,no fossils were seen in the rocks4 ,at #gj kilometres the hills began to get smaller1 becoming presently mere chalk-mounds4 ,a slight depression1 about a kilometre wide1 with larger chalk hills1 was crossed at #gc kilometres1 beyond which was a long stretch of flat ground composed of snow-white limestone1 chalky to fairly hard1 unfossiliferous1 with thin siliceous bands4 ,at #hc kilometres occasional low limestone hills were seen on ground otherwise fairly level1 strewn with flints4 ,a camel-road going south-east was crossed at #gg kilometres4 ,at #ib kilometres numerous small gasteropod casts were noticed in the chalk1 but no other fossils4 ,the plateau further on was seen to be formed of a hard thin bed of siliceous limestone1 with chalk below2 it shows occasional depressions with low hills within them4 ,at #ajc kilometres the great belt of sand-dunes running ,n4,w4-,s4,e4 was entered on4 ,close to the dunes and in the interspaces between them the plateau-rock is hard semi-crystalline white to brownish limestone1 with nummulites and small gasteropod-casts4 ,the sand contains a good deal of calcareous matter in addition to the grains of quartz4 ,the dunes have a total width of about #c kilometres1 some of them are of great height1 and the passage with heavily laden camels is not without some difficulty4 ,beyond the dunes the limestone is frequently siliceous1 weathered smoky-grey on surface1 and crowded with nummulites2 the surface of the ground is generally sandy and flint-strewn4 ,at #aac kilometres a narrow band of highly silicified1 superficially blackened1 limestone is crossed4 ,this band1 which is only a few centimetres broad1 running north and south1 stands up like a vein above the plateau1 and is evidently caused by infiltration of siliceous solutions in a crack4 ,in the silicified part of the limestone here the fossils can be easily seen2 they are chiefly corals4 ,further on1 the plateau consists of hard semi-crystalline and horny white limestone in which fossils are not seen4 ,at #abc kilometres the course1 hitherto nearly eastward1 was changed about #cj to the north1 over the same hard semi-crystalline limestone1 with hillocks showing alternations of soft chalky beds with harder ones4 ,some large flat-topped hills passed at #acj kilometres consist of horizontal limestone-beds1 the lower ones being chalky1 the upper ones hard1 grey1 and somewhat porous4 ,beyond this small rounded flints are seen on the plain1 and these continue1 increasing in number1 till a low plateau in front is reached4 ,at #acd kilometres a broad camel-road going south-east was crossed1 and at #ace kilometres the scarp of a higher plateau was ascended4 ,the lower plain has an altitude of #abg metres above sea-level1 the top of the plateau being some #gj metres higher2 the ground however rises gradually before reaching the escarpment1 so that the actual rise at the scarp is only about #dj metres4 ,the beds passed through on the ascent are-- ,top4 #a4 ,gravels of rounded flints and pebbles1 thin covering4 #b4 ,white chalk1 #b metres4 #c4 ,earthy limestone1 #fj centimetres4 #d4 ,red and white clays and marls1 about #cj metres4 #e4 ,sandy limestone1 #bj centimetres4 #f4 ,clayey limestone1 #ae centimetres4 #g4 ,sandy limestone1 #fj centimetres4 #h4 ,limestone conglomerate1 #a metre4 #i4 ,red and yellow clays at base4 ,these beds appear to dip slightly eastward4 ,no fossils were seen4 ,the top of the plateau is a huge level gravel-plain1 with white chalky limestone showing through occasionally4 ,sometimes this rock shows a loose tufaceous texture2 at other places it is sandy and fissile1 and now and again it encloses small pebbles4 ,a broad camel-road going south-east was crossed at #ade kilometres1 and another in the same direction was crossed at #aeg kilometres4 ,at #afb kilometres1 the gravelly ground having gradually fallen to #agi metres above sea-level1 a turn so as to take again an eastward course was made1 and a long stretch of gently undulating gravelly ground1 with white limestone showing through in small patches1 was traversed4 ,a camel-road going east was crossed obliquely at #ahe kilometres4 ,at #aif kilometres1 low gravel-covered hills of some extent were passed4 ,the pebbles range up to #aj or #ae centimetres in diameter1 and are well-rounded4 ,in the lower part of one of these hills1 sandy chalky limestone is seen cropping out through the gravel which covers the slope4 ,then a little further on are other low hills of white and grey nummulitic limestone1 only thinly sprinkled with pebbles and sand4 ,some of the beds here contain cylindrical nearly vertical holes1 one being measured and found to be #h centimetres diameter and #de centimetres deep4 ,beyond the hills just mentioned is a further stretch of gravel1 till at #aii kilometres a broad low ridge of white and creamy limestone1 crowded with large nummulites 7,n4 gizehensis7 is reached4 ,the beds of this ridge dip slightly west4 ,the hollows of the ridge are full of blown sand4 ,beyond is a flat depression1 the floor of which is strewn with small nummulites 7,n4 curvispira71 and with ,ostrea and other shells2 then another small nummulitic ridge is crossed1 after which comes some hard smoky-grey silicified limestone1 with much sand on the surface4 ,at #bjb kilometres from the starting-point a slight descent was made from the limestone on to a shelving gravelly tract with some sand-dunes4 ,some #d kilometres further on the wide belt of low sand-dunes fringing the cultivated area west of ,minia was entered4 ,this sandy tract has a width of about #d kilometres2 it contains some patches of grassy land with pools of water4 ,the village of ,nasl ,nadiub ,lengat1 at the edge of the valley-cultivation1 was reached after covering #bab kilometres from the south point of the oasis1 the march having occupied about #fj hours4 ,to summarise the geology of the area crossed in the traverse just described1 it will be clear that although the beds which form the top of the scarp at the south end of the oasis are probably of ,upper ,cretaceous age1 yet these beds are overlain by ,eocene limestone with nummulites at a short distance 7about #aj kilometres7 east of the ,baharia-,farafra road4 ,it is probable that the entire stretch of limestone-plateau between this point and ,minia is ,eocene1 nummulites being recorded both from near the centre of the tract and from the edge of the desert near ,minia4 ,the softer chalky beds traversed appear stratigraphically lower than the ,nummulite-limestone1 and would seem to correspond to the chalky-limestones with ,operculina libyca and ,lucina thebaica which occur so constantly near the base of the ,eocene in ,kharga ,oasis4 ,the gravels1 as already remarked in referring to the ,minia-,baharia road1 are of uncertain age1 but are certainly ,post-,eocene4 ,the sand-dune belt crossed near the centre of the tract is the same as that crossed on the outward journey from ,minia1 and extends for a great distance north and south4 ,sidenote3 ,baharia-,farafra road4 ,the road from ,baharia to ,farafra1 traversed by ,cailliaud in #ahbj1bf and by ,jordan in #ahgdbg1 was taken by a party of the ,geological ,survey in proceeding to ,farafra after surveying the west side of ,baharia4 ,the start was made from the same point as the return traverse to ,minia1 viz41 the point of ascent of the ,farafra road at the south scarp of ,baharia 7lat4 #bg #dh #ac ,n41 long4 #bh #cb #di ,e4 of ,greenwich71 and the general course taken was in a direction #cj-dj west of south4 ,a second1 almost disused1 road from ,baharia to ,farafra ascends the western escarpment from the depression #c kilometres further north1 follows a narrow plateau at the base of the chalk escarpment and joins the main road some distance south of the extreme end of the oasis-depression4 ,the main road after ascending the scarp at the extreme south end of the depression1 at the point mentioned1 proceeds at first in a direction about #cj west of south1 over a limestone plateau1 with sandstones and clays below4 ,after #d kilometres hard concretionary grey sandstones are noticed1 and #c kilometres further on a small hill of hard false-bedded grey sandstone is passed4 ,the escarpment of the ,white ,chalk now approaches within #b kilometres of the road on the right hand1 on the left being slightly further away4 ,these escarpments run parallel with the road for some #e kilometres1 forming a large bay1 until at #ab kilometres the road passes through a narrow pass with the cliffs of white chalk quite close on either side4 ,almost immediately the cliffs again recede1 forming a small bay opening into another still larger at #ad kilometres4 ,at this point an isolated chalk stack1 with great masses of fibrous calcite at the base1 is passed1 and this hill makes a convenient point for a survey-station4 ,several more isolated hills are now passed and then the chalk scarps on either side close up and join1 the road passing up the escarpment at the end of the bay and gaining the summit of the white chalk at #bj kilometres4 ,the beds forming the plateau between the end of the oasis-depression and this escarpment of white chalk belong to the middle series of the ,upper ,cretaceous1 the 8variegated clays and sandstones10 fully described in ,chapter ,v4 ,from the top of the white chalk escarpment the road continues in a well-maintained direction of about #dj west of south1 over a more or less level gravelly plain with outcrops of hard crystalline limestone or chalk4 ,another1 less used1 road to ,farafra1 via the bay to the north-east of ,ain el ,wadi 7in ,farafra ,oasis71 probably branches off about this point4 ,at #ce kilometres a small hill of siliceous limestone is passed and the chalk forms a slight escarpment a little way to the left4 ,about a kilometre further on a ridge of dark brown ferruginous sandstone is crossed and almost immediately afterwards1 at #di kilometres1 the road descends through snow-white chalk cliffs into the depression of ,farafra4 ,the chalk forming the cliffs weathers in places to a smoky-black colour4 ,at the bottom of the descent1 which is gentle and presents no difficulties1 an isolated hill occurs on the left and from this the dark clump of palms of ,ain el ,wadi is plainly visible bearing #i west of south and distant about #af kilometres4 ,from ,ain el ,wadi to ,farafra village is another day's march of #dc kilometres1 the road bearing about #ce west of south1 but for details the reader is referred to the report on ,farafra ,oasis4#bh ,with regard to the geology of the road across the plateau separating ,baharia and ,farafra1 the age of the beds first passed over has already been mentioned4 ,after rising on to the white chalk the surface of this formation is followed right up to the descent into ,farafra4 ,although occasional crystalline limestones are crossed1 these1 with the surface accumulations of flinty material1 are only skin deep and the former probably represents the upper part of the chalk itself4 ,no ,eocene beds were observed1 and it is extremely doubtful if any exist2 in the latter case they would be patches of ,operculina-nummulitic limestone from the base of the ,esna ,shales1 as this limestone is sometimes left capping the surface of the white chalk after complete denudation of the shales above1 as in the bay to the north-east of ,ain el ,wadi4 ,we thus see that the ,cretaceous of ,baharia is continuous with that of ,farafra and that the intervening desert is not formed of the ,nummulitic limestones of the ,eocene as formerly supposed and shown on the ,rohlfs ,expedition map4#bi ,sidenote3 ,other ,roads4 ,besides the routes already mentioned1 there are several other roads connecting ,baharia with ,siwa ,oasis1 the ,fayum1 and the ,nile ,valley4 ,of the principal of these we have a fairly accurate knowledge from the records of scientific travellers1 such as ,jordan and ,ascherson1 and it may be well to mention briefly the chief points concerning them4 ,the road from ,siwa#cj was traversed by ,jordan in #ahgd1 the march occupying ten days4 ,leaving ,siwa 7,n4 lat4 #bi #ab #j1 long4 #be #ca #j ,e4 of ,greenwich1 altitude #be metres below sea-level71 the road follows an east-south-east course for about #hj kilometres2 it then turns slightly more southwards1 rounding the corner of the plateau 7,pacho ,mt4 of ,rohlfs7 and afterwards passing through the deep depressions of ,aradj 7- #gj m47 and ,uttiah 7- #bj m47 to the south side of ,lake ,sittra 7- #be m41 ,n4 lat4 #bh #db #dj1 long4 #bg #d #bc ,e4 of ,greenwich1 #agj kilometres distant from ,siwa74 ,from ,sittra an easterly course is taken for some #eb kilometres1 when another slight turn to the south is made1 the oasis of ,baharia being entered by descending the scarp some #c kilometres slightly north of west of ,el ,qasr4 ,between ,sittra and the edge of the oasis the ground1 which is of nummulitic limestone1 rises gradually but steadily1 the level at the edge of the oasis being #aid metres above sea4 ,the distance from ,sittra to ,el ,qasr is about #ahj kilometres1 making the total distance along the route taken from ,siwa about #cej kilometres4 ,the road from the ,fayum to ,baharia1 taken by ,belzoni in #ahai1 ,pacho in #ahbc1 and ,ascherson in #ahgf1 has a total length of about #bdj kilometres1 and occupies some six days in marching4 ,leaving ,medinet el ,fayum the road proceeds south-west via ,gharag to ,wadi ,rayan 7#bi m4 below sea-level1 about #ge kilometres from ,medinet el ,fayum7 where a supply of water is obtainable from several different springs4 ,from ,ain ,rayan the road proceeds south-west over a rising nummulitic limestone plateau1 crossing the so-called ,bahr bela ,ma a little north of the ,maghagha-,baharia road4 ,at 8,el ,bahr0 7#ajj kilometres from ,ain ,rayan7 a turn is made to the ,w4,s4,w42 the sand-dunes of ,abu ,moharik are crossed a little further on1 and the oasis is entered at the northern extremity by the same 8agaba0 as that taken by the ,maghagha road4 ,within the oasis the road branches as already described1 the west branch leading to ,el ,qasr and the east one to ,zubbo4 ,another route making use of the same point of entry into the oasis as that just described is marked on ,ascherson's map as coming from ,bahnessa1 a large village on the ,bahr ,yusuf1 near the western edge of the ,nile ,valley4 ,this road1 which is some #aij kilometres in length1 leads almost due west over a monotonous plateau till near the oasis1 where it joins the roads from the ,fayum and ,maghagha4 ,the road between ,baharia and ,samalut1 traversed on his return journey by ,ascherson in #ahgf1 appears to be the shortest connection between the oasis and the ,nile ,valley4 ,its course is due west1 and its total length to ,mandisha about #ahj kilometres4 ,leaving ,samalut the cultivation is crossed via ,mangatin to ,rubi2 this latter village is on the edge of the desert1 about #e kilometres west of ,samalut4 ,the road proceeds over a monotonous rocky and gravelly plateau1 crossing the great sand-dune belt of ,abu ,moharik about #abb kilometres west of ,samalut1 and entering the oasis near ,ain ,gelid by the same descent as that used by the ,survey party from ,minia4 ,the journey from ,bawitti to ,samalut occupied ,ascherson four days4 ,still another road from the ,nile ,valley1 likewise entering the oasis near ,ain ,gelid1 is marked on ,ascherson's map as coming from ,delga1 a village near the west edge of the valley-cultivation4 ,this road has a ,n4,n4,w4 course1 and a total length from ,delga to ,mandisha of about #aij kilometres4 ,it crosses the sand-dunes of ,abu ,moharik about #acj kilometres from ,delga1 i4e41 about #dj kilometres before reaching the edge of the oasis4 ,several other roads start from points still further south1 such as ,der el ,maragh1 ,beniadi1 ,assiut1 etc41 and most of the villages along the west side of the ,nile ,valley between ,assiut and the ,fayum have branch tracks which join the main roads at different points4 99 99 99 99 99 ,footnote #ag3 ,for remarks on the surveying of desert roads1 and on the possibility of traversing the open desert1 see ,,ball ,kharga ,oasis 7,reports of the ,geolog4 ,survey for #ahii1 ,part ,,ii7 ,cairo1 #aija1 p4 #af4 ,footnote #ah3 ,for details of these hills and ,wadi ,muailla see ,,beadnell1 ,the ,topography and ,geology of the ,fayum1 etc41 ,survey ,dept4 ,p4 ,w4 ,m4 ,cairo1 7in the press74 ,footnote #ai3 ,op4 cit4 p4 ,,cxxxvi4 ,footnote #bj3 ,see ,schweinfurth in 8,pet4 ,mitt40 #ahgf1 p4 #bfe2 also ,ascherson in 8,zeitschrift d4 ,gesellschaft fr ,erdkunde0 zu ,berlin1 #ahhe1 p4 #aae4 ,footnote #ba3 ,,beadnell1 ,dcouvertes ,gologiques ,rcentes dans la ,valle du ,nil et le ,dsert ,libyen1 compte rendu1 ,v,i,i,ie ,congrs ,gologique international1 #aijj2 ,paris #aija1 p4 #hdg4 7,recent ,geological ,discoveries in the ,nile ,valley and ,libyan ,desert1 ,london1 #aijj47 ,footnote #bb3 ,for a brief description of these deposits see ,dcouvertes ,gologiques1 etc41 pp4 #hfc-hfe4 ,footnote #bc3 ,geolog4 ,mag4 ,jan4 #aijj1 ,no4 #dbg1 p4 #ah1 and op4 cit4 7,dcouvertes gologiques71 p4 #hdg4 ,footnote #bd3 ,,ball4 ,kharga ,oasis1 p4 #bc1 ,cairo #aijj4 ,these gravels were examined and mapped in the ,survey of the ,nile ,valley in #ahif4 7,h4 ,j4 ,l4 ,b47 ,footnote #be3 ,jordan's position for this point is approximately lat4 #bg #df #bj ,n41 long4 #bh #cf #bj ,e4 of ,greenwich1 altitude #aic metres above sea-level4 ,footnote #bf3 ,voyage ,mro1 etc41 vol4 #a1 p4 #aif4 ,footnote #bg3 ,physische ,geographie der libyschen ,wste1 p4 viii4 ,footnote #bh3 ,,beadnell1 ,farafra ,oasis1 its ,topography and ,geology1 ,geol4 ,surv4 ,egypt ,report1 ,pt4 ,,iii1 ,cairo1 #aija4 ,footnote #bi3 ,dcouvertes ,gologiques ,rcentes etc41 p4 #hej4 ,footnote #cj3 ,see the geological map accompanying ,zittel's ,geologie der libyschen ,wste1 ,cassel #ahhc4 ,,chapter ,,iv4 99 99 99 99 99 ,,topography ,,of ,,the ,,oasis4 ,as already mentioned in the ,introduction1 ,baharia ,oasis is a large natural excavation in the ,libyan ,desert plateau4 ,previously existing maps frequently indicate this depression as being open towards the east1 but one of the results of the survey expedition has been to show that such a representation is erroneous1 ,baharia differing from the southern oases in being entirely surrounded by an escarpment1 for the most part steep and difficult of ascent4 ,in plan the oasis is of highly irregular outline1 more particularly on its western side2 but the general shape of the excavation is that of a large oval1 with its major axis running north-east and south-west1 and with a narrow blunt pointed extension at each end4 ,the extreme length 7,n4,e4-,s4,w47 is about #id kilometres1 and its greatest width1 measured at right angles to its length1 some #db kilometres4 ,the average depth from the general desert plateau-level to the floor of the excavation is rather less than a hundred metres4 ,thus1 though commonly called the 8little oasis0 in contradistinction to the still larger areas of ,farafra1 ,kharga and ,dakhla1 ,baharia is of considerable size1 covering in all over #a1hjj square kilometres4 ,within the excavation1 and rising up from its floor1 in some cases to a greater height than the bounding scarps1 are numerous hills1 the larger generally having flat tops and the smaller ones being more or less conical4 ,the cultivated lands1 which lie almost entirely around the villages in the north part of the oasis1 bear only a very small ratio to the entire oasis-area1 probably not exceeding in all1 including palm-groves1 #aa square kilometres2 the remainder of the floor is1 however1 by no means absolutely waterless or totally devoid of vegetation1 as numerous springs exist in certain areas1 outside the cultivation-limits1 and desert grasses and scrub cover considerable tracts2 extensive salines1 now mostly nearly dried up1 are found in some localities4 ,it will be convenient to consider the topography of the oasis under the following principal heads3-- #a4 ,the bounding escarpments2 #b4 ,the hills within the oasis2 #c4 ,the floor of the oasis1 including the villages1 hamlets and springs4 ,i4--,the ,bounding escarpments4--,at the most northerly point of the oasis is a narrow extension some #d kilometres wide1 enclosing a large black hill1 ,jebel ,horabi4 ,the portion of the scarp1 or wall1 which bounds this extension is lower and less steep than that further south1 as the level of the oasis-floor rises considerably towards the hill just mentioned4 ,the roads from ,feshn1 ,maghagha and the ,fayum enter at the north-east point of the extension2 the descent is easy1 the fall from the plateau into the oasis-area being about #gj metres1 with a further drop of some #cj metres just after passing ,jebel ,horabi4 ,at this latitude the depression opens out considerably1 the escarpment on the one side trending to the south-west1 while that on the other side turns a little east of south2 about #h kilometres further on there is a sudden widening of the excavation1 the scarps retreating respectively east and west1 so that before the latitude of the villages is reached the oasis has a width of some #bh kilometres4 ,between the latitude of the villages and ,ain el ,haiss a marked difference in the two scarps is noticeable2 both curve round so as to enclose a wide oval area1 but while that on the east side shows a comparatively smooth outline1 broken only by a few small projecting headlands and gullies1 the western bounding wall displays a highly irregular shape1 long irregular tongues of plateau being separated by wide or narrow 8bays40 ,on the east side1 the most considerable irregularity is near ,ain ,gelid2 south-east of this spring the road from ,minia enters down a gently-falling open sandy gully1 with a long square-ended tongue of plateau to the south of it4 ,further south two other roads1 perhaps branches of the one just mentioned1 enter by smaller gullies2 the scarp here has become much less formidable than further north1 and the top of the plateau is covered with countless small conical hills of white chalk4 ,near the north end of the large hill-mass ,e4,n4,e4 of ,ain el ,haiss1 the eastern scarp almost disappears1 the oasis-floor having risen considerably2 it becomes more marked further on1 and continues to the south1 though of no great height1 with limestone ridges at its foot4 ,just south of the large hill-mass referred to1 the lower limestone ridges unite so as to form a regular escarpment1 which continues southward as the limiting-wall of the oasis1 the upper scarp now forming the edge of a higher plateau about a kilometre away from the oasis-edge4 ,the two escarpments run almost parallel1 one forming a step above the other1 to the south end of the oasis2 the lower one1 forming the oasis-wall proper1 is much more considerable than the upper1 and the edge of the upper one is frequently broken into hills4 ,small chalk-hills continue to cover the upper plateau4 ,from ,jebel ,horabi1 at the extreme north end of the depression1 the western wall1 or escarpment1 trends in a general direction of #cj south of west for about #bj kilometres before it turns and runs some #e kilometres south1 forming the prominent headland about #b kilometres north-west of ,el ,qasr4 ,this cliff1 probably the boldest part of the whole oasis-wall1 attains a height of some #age metres above the lowest part of the floor of the depression4 ,it is steep throughout and the only practicable passes to the plateau above are through occasional gullies1 in which the slopes are of easier gradient4 ,the main caravan road from ,el ,qasr and ,bawitti to ,mogara and ,alexandria gains the plateau by the long narrow gully #f kilometres ,n4,n4,w4 of ,el ,qasr4 ,to the south of the headland1 #b kilometres north-west of ,el ,qasr1 the escarpment runs back and forms a remarkable narrow bay1 running east and west1 with an average width of only #d kilometres1 and extending some #ah kilometres west of ,el ,qasr4 ,this indentation is separated from a much larger opening to the south by a long narrow promontory1 or tongue of plateau1 barely a kilometre wide in places4 ,the extreme point of this tongue is #i kilometres south-west of ,bawitti4 ,the large bay to the south is bounded on the north by the usual steep wall of rock1 but this becomes much less prominent at the western extremity1 where the escarpment is low and easily accessible to camels4 ,a few kilometres out to the west is another escarpment of white chalk trending irregularly in a ,n4,n4,e4 and ,s4,s4,w4 direction4 ,an old road1 probably joining the main caravan road from ,bawitti to ,siwa further west1 runs up this bay and on to the plateau beyond4 ,numerous large and small hills occur within the bay4 ,the southern cliff1 formed of dark brown or black ferruginous sandstones1 is remarkably irregular1 and quite different in appearance and weathering from the northern wall4 ,the promontory to the south of this bay juts out boldly into the oasis-area4 ,further south the escarpment recedes and runs in the most irregular manner some #be kilometres south-west1 several times retreating to form well-marked indentations in the general line of cliff2 it afterwards trends #ae kilometres south-east up to the prominent corner #d kilometres west of ,ain el ,haiss4 ,a road from ,ain el ,haiss to ,siwa reaches the escarpment #ae kilometres north-west of the spring1 passing up a gully of easy gradient to the plateau4 ,about #g kilometres further on the chalk escarpment1 already mentioned1 is seen running ,n4,n4,e4 and ,s4,s4,w4 ,about the latitude of ,ain el ,haiss the east and west escarpments approach each other considerably1 the width of the depression narrowing from some #cf to about #ae kilometres4 ,this narrowing continues1 though more gradually1 to the southern extremity1 where the width is only #d kilometres4 ,the western side1 south of ,ain el ,haiss1 is formed of three separate scarps1 one behind the other1 the outermost being that of white chalk which has already been referred to4 ,on the east a second scarp of less height is found behind the lower4 ,the height of the main scarp above the oasis floor at the southern end of the oasis is about #hj metres4 ,at the extreme south the main road from ,baharia to ,farafra ascends up an easy gradient to the plateau above the lowest escarpment1 the others being crossed further to the south4 ,the ,hills within the ,oasis-excavation4--,the most striking feature in the topography of ,baharia ,oasis is the large number of hills within the area4 ,these hills impede the view1 so that from very few points on the low ground can any extended outlook be obtained1 and they give to ,baharia an appearance entirely different from that which characterises the other ,egyptian oases4 ,for the most part these hills have a black aspect1 due to the nature of the rocks 7ferruginous quartzites and dolerite7 capping them2 a few are reddish 7ferruginous sandstone and ochreous clay72 others again are white 7limestone74 ,the most strongly-marked group of hills is that extending in a nearly straight north-easterly direction a few kilometres south of the villages4 ,forming a prolongation of the long tongue of the west scarp already mentioned1 this line of hills almost cuts the oasis in two4 ,the largest hill of the range1 ,jebel ,hefhuf1 a narrow1 ridge-like hill of limestone1 has a black appearance at its northern end1 being here composed of dolerite2 the others capped entirely by brown limestone and partly swathed in accumulations of blown sand are of lighter aspect4 ,they rise to a height of some #acj metres above the level of the villages4 ,the large1 dark1 dolerite-capped hill between ,el ,qasr-,bawitti and ,zubbo-,mandisha 7,jebel ,mandisha7 divides the two main cultivated tracts of the oasis from each other1 the road from ,mandisha to ,el ,qasr passing over its southern end4 ,a similar mass is ,jebel ,mayesra1 the large triangular hill north of ,jebel ,mandisha2 the blackness of ,jebel ,horabi1 in the north end of the oasis1 is1 on the other hand1 due not to eruptive rocks but to the presence of iron ore in considerable quantity4 ,the huge hill-mass near the east scarp1 north of the latitude of ,ain el ,haiss1 is of blackened sandstone1 like most of the hills near it2 some of those west of it are1 however1 white1 owing to a capping of limestone1 and these stand out in striking contrast to the others4 ,no purpose would be served by a detailed description of the smaller hills2 their positions will be evident from the map 7,plate ,i71 and except in the case of the larger ones1 there is a great monotony of form1 nearly all the smaller hills being conical4 ,one of the most striking conical hills is seen near the west scarp in lat4 #bh #bf ,n4 7#aj kilometres north-east from ,el ,qasr72 this1 however1 is a limestone-capped hill1 thus differing from the numerous cones in the south part of the oasis1 which are mostly capped by hard dark ferruginous quartzites and sandstones4 ,the ,floor of the ,oasis4--,the lowest part of the oasis-floor appears to be in the neighbourhood of ,el ,qasr1 where the altitude above sea-level is about #aac metres4 ,mandisha lies somewhat higher1 and the hamlet of ,harra1 with the springs ,ain ,gelid and ,ain ,haswi lie on a level tract some #acd metres above sea-level4 ,ain el ,haiss1 according to the ,survey's barometric comparisons with ,cairo1 has an altitude of #aef metres above sea2 as ,jordan's determination1 however1 gave only #abb metres1 there is some little uncertainty about the actual altitude of this point4 ,as might be expected1 the lowest parts of the oasis-floor are those where springs abound2 in the neighbourhood of the hills and escarpments there is always a gradual upward slope towards the bases of the hills and plateau4 ,the major part of the oasis-floor is flat or gently undulating ground of sandstones and clays1 strewn with fragments of rock derived from the hills2 large areas1 however1 are overgrown with grasses and scattered bushes1 notably to the north and west of the villages1 in the neighbourhood of ,ain ,gelid1 south-east of ,jebel ,hefhuf1 and in the vicinity of ,ain el ,haiss2 while other extensive tracts north of the villages1 as well as south-east of ,mandisha and between ,harra and ,ain ,gelid1 are covered by salty marshes1 now partly dried up4 ,the white salty crusts on the ground at these places give them a striking appearance1 like a slightly rough glittering sheet of water4 ,the tracts north of ,zubbo and near ,harra still contain much water and salty sludge2 travelling over them needs great caution1 as the dry crust will often support the weight of a man1 while a camel sinks through into the soft mire beneath4 ,sand-accumulations do not cover such large tracts in ,baharia as in the southern oases2 there are1 however1 some small dunes around the cultivated lands of ,mandisha and ,zubbo1 as well as on some of the hill-sides2 the dunes support a scanty growth of tamarisk-bushes4 ,the principal villages of ,baharia are four in number1 all situated near together in the north part of the oasis in ,n4 lat4 #bh #ba to #bh #bb4 ,they are separated into two groups by a large hill 7,jebel ,mandisha71 ,el ,qasr and ,bawitti lying to the west1 and ,mandisha and ,zubbo to the east4 ,the ,government officials reside at ,bawitti and ,el ,qasr4 ,according to the last census1#ca the population of the oasis in #ahig was #f1jha divided among the four villages as follows3-- ,el ,qasr #a4gab ,bawitti #a4gac ,mandisha #a4gih ,zubbo #hehcb ,the males slightly outnumber the opposite sex4 ,the villages are small uninteresting collections of mud hovels1 surrounded by gardens1 palm-groves1 and cultivated lands4 ,besides the cultivated tracts existing close around the villages1 there are others at points more or less distant from them1 tilled by men from the villages4 ,such are seen1 for instance1 west of ,zubbo2 at ,ain ,bayum1 a spring with a small cultivated area1 among the sand-dunes #d kilometres north-east of ,zubbo1 where a clump of date-palms forms a conspicuous landmark2 ,ain ,sini and ,ain ,murun1 #g kilometres north-east of ,el ,qasr2 also some small tracts west of1 and a large area south-west of1 ,bawitti4 ,ain ,auena1 ,el ,ayun1 and other points marked on ,ascherson's map1 are probably within this last area4 ,taking the whole cultivated land1 inclusive of palm-groves1 at #aa sq4 kilometres1 the area per individual of population works out to about #jdc feddans2 this figure is somewhat lower than ,kharga 7#jef feddan7 and considerably less than that of ,dakhla 7#adi74 ,while ,kharga exports practically nothing1 ,baharia does a considerable export trade with the ,nile ,valley1 principally in dates1 although not on so large a scale as ,dakhla4 ,in and near the villages springs are extremely numerous2 the water is met with at shallow depths1 and does not require1 as in ,kharga and ,dakhla1 deep-bored wells4 ,it is led from its sources along underground aqueducts1 which date from the ,roman occupation2 a description of these will be found in the chapter on antiquities 7p4 #gc-hj74 ,no attempt was made by the survey to map or number the wells and springs within the vicinity of the villages2 they are mostly concealed in the palm-groves and gardens4 ,the water is slightly ferruginous1 and frequently warm1 bubbles of carbon dioxide rising with it4 ,at ,bawitti1 the largest spring is cold1 but one close by it is warm1 although none approach the high temperature of the ,dakhla wells4 ,one of the principal sources of water in ,mandisha1 is a well1 situated near the cemetery1 #g metres deep and timbered with palm trunks2 the temperature of the water is #bf ,c4 7air #ab ,c471 and when freshly drawn it is turbid with bubbles of carbon dioxide4#cc ,the process of cleaning out wells and boring fresh ones in ,baharia is done with a very simple apparatus1 an iron jumper about #a metres in length1 #e centimetres diameter1 worked by a rope passing through an eye at one end1 being the only boring-tool used4 ,cleaning out wells is carried on by this tool in conjunction with the 8fass0 7a sort of blunt adze used universally for digging operations in ,egypt7 and a rude basket-apparatus for the removal of sand and sludge4 ,the upper part of the hole having been excavated by the 8fass10 the jumper is worked by hand1 no tripod or other frame being erected2 the sludge is raised by a small basket of plaited grass1 fitted on to the lower end of the jumper1 lowered into the hole by a rope1 the sand settling in the basket after jumping the iron tool1 with the basket attached1 within the well4 ,the hole is generally made #ge centimetres diameter1 and sinking is said to go on at the rate of metre per hour1 ten men being employed1 who relieve each other4 ,it does not appear1 however1 that this apparatus is capable of sinking new wells1 being only used for cleaning out old ones2 most of the water used is derived from ancient ,roman adits4 ,the water from a single spring often supplies several land-owners2 the usual method of distribution is by means of a wooden weir1 in the upper edge of which rectangular notches are cut1 each individual being entitled to the water which flows through a certain number of notches4 ,as a rule1 the springs are banked up at night1 so that the water accumulates in a large pool near1 and is allowed to run on to the fields in the daytime4 ,taxation in ,baharia and ,farafra is based on the land cultivated and not1 as in ,kharga and ,dakhla1 on the water4 ,date-palms1 are taxed #ae milliemes per annum4 ,the numbers of trees at the #ahig assessment were1 apricots1 #d1hfc2 olives1 #e1cgj2 palms1 #ic1jjj1 or about fifteen of the latter per inhabitant4#cd ,the great article of produce in the oasis is therefore dates1 and at the date-gathering season the inhabitants are busily employed in gathering1 drying and packing the fruit for export to the ,nile ,valley4 ,three-fourths of the whole date production are exported4 ,the dates are of excellent quality1 and find a ready sale1 the villages of the oasis being crowded with camels and traders from the valley each ,november4 ,a camel-load of dates1 packed in two plaited-grass bags1 is bought in the oasis for #ejj milliemes1 and is said to be sold in the ,nile ,valley for four times that sum1 so that the ,beduin1 to whom the trading is almost wholly confined1 even allowing for difficulties of transport1 make a good profit4 ,though dates are the only fruit exported1 olives1 apricots1 grapes1 pomegranates1 oranges1 lemons1 and figs are grown in great numbers1 and about #fjj feddans are cultivated with rice1 wheat and barley crops4 ,clover is sown after the rice crop is gathered4 ,the area of land cultivated for cereals is said to be slowly diminishing year by year1 having been #ijj feddans fifteen years ago2 the decrease is put down to a diminished yield from the springs1 owing to their becoming sanded and choked up1 but for this the inhabitants are themselves largely to blame1 as they do not take sufficient measures to keep the wells free4 ,it may be that water has been diverted to the palm-groves1 these furnishing the saleable article4 ,it will be apparent1 from the figures already given1 that palm-groves cover the greater portion of the irrigated land around the villages4 ,the public health of the oasis is far from good4 ,though free from the opthalmia which is so prevalent in the ,nile ,valley1 the inhabitants suffer much from fevers and gastric disorders1 and according to the ,government doctor virulent epidemics of small-pox occasionally visit the place4 ,the low standard of health is partly attributable to the bad quality of the water1 but is probably highly aggravated by the swampy ground found in many localities4 ,it is also noticeable that no trouble is taken to protect the drinking-water from contamination4 ,besides the four principal villages already mentioned1 small settlements exist at ,mandisha ,aguza1 #b kilometres east by south from ,mandisha2 at ,harra1 a tiny hamlet #ad kilometres east of ,mandisha2 at ,ain ,jafarra1 #f kilometres south of ,mandisha2 and at ,ain el ,haiss1 in the south part of the oasis4 ,the populations1 etc41 of these outlying settlements are included in the figures given above for the chief villages4 ,mandisha ,aguza consists of a group of mud dwellings aggregated round a low sandstone eminence1 surrounded by a small cultivated tract4 ,ascherson records that in #ahgf the inhabitants still spoke the ,siwa dialect among themselves4 ,cailliaud had already remarked in #ahbj that the spot was peopled by colonists from ,siwa4 ,harra consists of about half a dozen hovels1 sheltering a population which cannot exceed fifty1 with several springs and palm-groves1 and a small tract of cultivated land4 ,the principal spring is marked by a large pool of clear water1 about #dj metres in diameter1 lying in a slight depression to the south of the houses2 the water has a temperature of #bd ,c4 7hotter than the air74 ,there is plenty of water at this place1 and more can easily be got by digging to a small depth4 ,at ,ain ,jafarra there is only one house1 tenanted by a single family4 ,at least two springs exist here1 one being near the house and the other at a distance of some #gjj metres to the east2 the water from the latter spring is led by a long canal to the small palm-grove and patch of cultivated land near the house4 ,the water1 though somewhat saline1 is drinkable4 ,ain el ,haiss is an important point on the road from the villages of ,baharia to ,farafra4 ,it lies some #dj kilometres ,s4,s4,w4 from ,bawitti1 in about lat4 #bh #b ,n41 long4 #bh #ci ,e4 of ,g4 ,it is a small settlement1 being tenanted at the time of survey by only three or four men4 ,there are two springs1 one at a higher level than the other4 ,the upper spring is close to the house occupied by the inhabitants2 the water1 which has a temperature of #ae4f ,c4 7i4e4 #c warmer than the air at the time of measurement7 is collected into a shallow muddy pool1 surrounded by a mud dam1 whence it flows westward on to the fields4 ,the lower spring forms a pool of about #djj square metres in extent1 the temperature of the water here being #ad ,c4 ,it is situated about #djj metres south-west of the one just described1 and like it serves for irrigation4 ,rice was the crop growing at the time of our visit4 ,the total irrigated area at ,ain el ,haiss is about #fj or #gj feddans1 and there are only a few palms4 ,besides the house there is a sheikhs' tomb1 which is an object of veneration in the oasis1 a small walled-in garden1 and a large ruin2 the last named will be described among the antiquities of the oasis4 ,another small cultivated tract1 some #ae or #bj feddans in extent1 with at least one spring1 exists about #c kilometres north-west of ,ain el ,haiss4 ,according to ,jordan there are two springs here1 named ,ain ,hassab and ,ain el ,gharb1 owned in #ahgd by the ,kadi of ,el ,qasr1 but the place is usually spoken of as ,ain el ,haiss el ,bahari4 ,east of ,ain el ,haiss are two considerable patches of cultivated land which were mapped from the east scarp1 and thus not examined by the survey4 ,of these1 the most northerly one is situated about #i kilometres east of ,ain el ,haiss2 according to ,ascherson it bears the name of ,tablemun1 and its principal spring had a temperature of #bg ,c4 ,the ruins of a ,coptic village existing here show that the place was inhabited in early times4 ,it lies some #e kilometres ,s4,s4,w4 from ,tablemun1 and about #g kilometres ,e4,s4,e4 from ,ain el ,haiss1 and thus forms the most southerly cultivated spot in the oasis4 ,both these localities were reported by our men1 sent there to obtain water1 to be untenanted2 the lands are doubtless cultivated by men sent from ,ain el ,haiss or from the villages for the purpose4 ,a long line of sand-dunes and scrub runs ,s4,s4,w41 hiding these places from a traveller approaching from ,ain el ,haiss4 ,besides the springs at the inhabited spots above described1 and those used for irrigated lands more or less near to them1 there are numerous outlying springs1 which1 while not serving for irrigation1 are important as localities where water may be obtained4 ,the chief of these are ,ain ,gelid1 on the road from ,minia and ,samalut1 #c kilometres south-east of ,harra2 ,ain ,haswi1 #i kilometres due south of ,harra1 to which two roads from the east scarp converge2 ,ain ,beled1 #g kilometres west of ,bawitti2 and ,ain ,khaman1 half-way between ,ain el ,haiss and the south point of the oasis4 ,the water at ,ain ,khaman is said to be bitter and the spring is apparently frequently sanded-up and difficult to find1 so that travellers to ,farafra should take in their supplies at ,ain el ,haiss4 99 99 99 99 99 ,footnote #ca3 ,recensement gnral de l'gypte1 tome ,,iii1 #ahif4 ,footnote #cb3 ,includes about #ej inhabitants of the hamlet of ,harra4 ,footnote #cc3 ,a bottle of the water tightly corked burst shortly afterwards by gaseous pressure2 the bottle having been filled at the bottom of the well doubtless accounts for this1 the pressure due to the head having caused solution of the gas to a greater extent than could be supported at the surface4 ,the evolved gas was at first suspected to be methane1 as there is frequently a great deal of decaying vegetable matter in the mouths of the wells2 but it extinguished a taper1 and1 moreover1 the water runs too rapidly for any accumulation of gaseous decomposition-products to take place4 ,footnote #cd3 ,in ,dakhla and ,kharga ,oases there are only seven and a half and eight trees respectively per inhabitant4 ,,chapter ,v4 99 99 99 99 99 ,,geology ,,of ,,the ,,oasis4 ,sidenote3 ,previous geological work4 ,the earliest geological observations made in ,baharia ,oasis appear to have been those of ,cailliaud1#ce who visited the district in #ahbj1 and recorded the occurrence of volcanic rocks within the depression4 ,in #ahgd the celebrated ,rohlfs ,expedition was organised1 and in that and the succeeding year traversed large portions of the ,libyan ,desert4 ,the work of this ,expedition1 forms indeed1 the basis of our knowledge of the geology of ,egypt generally4 ,the eminent geologist and palontologist of that ,expedition1 ,karl ,a4 ,zittel1 did not1 however1 visit ,baharia1 and the only information with regard to the geology of this oasis was derived from specimens collected by ,prof4 ,ascherson4 ,after examining these1 ,zittel stated#cf that the floor of the oasis consisted of sandstones1 marls1 etc41 presenting a considerable resemblance to the lower part of the ,overwegi stage2#cg but concluded1 that as they were succeeded at a very short interval by ,nummulitic ,limestone1 precluding the possibility of the higher ,cretaceous beds1 except in a very attenuated form1 they must be of ,tertiary age4 ,in #ahid1 ,capt4 ,h4 ,g4 ,lyons1 ,r4,e41#ch visited ,baharia1 and #e miles ,n4,n4,e4 of ,zubbo discovered a bed containing small examples of ,exogyra4 ,these were examined by ,prof4 ,zittel and referred to as undersized specimens of ,exogyra ,overwegi ,beyr4#ci ,this discovery of ,capt4 ,lyons' thus showed the series to be undoubtedly of ,upper ,cretaceous age4 ,in the latest edition of ,prof4 ,zittel's map1 the depression was shown as consisting of ,cretaceous beds surrounded by an ,eocene plateau1 which was also supposed to separate it from the oasis of ,farafra to the south4 ,sidenote3 ,geological ,survey1 ,oct4-,dec4 #ahig4 ,a glance at ,plate ,i will be sufficient to show that the work of the ,geological ,survey has resulted in large and important additions to our knowledge of this oasis4 ,the ,eocene is seen to form the surrounding plateau only on the north2 while the ,cretaceous1 consisting of several well-marked divisions1 occupies not only the depression itself1 but forms part of the surrounding plateaux on the east and west sides1 and is continuous with that of ,farafra to the south4 ,moreover1 the relations of the two great formations of ,cretaceous and ,eocene are now shown to be those of unconformability and overlap4 ,the actual extent of volcanic rocks and post-,eocene lacustrine deposits1 the latter a newly-discovered and important series1 is now shown for the first time4#dj ,important folding has been detected and numerous organic remains have been discovered4 ,the deposits met with in the district admit of classification as follows3-- ,,recent4 #a4 ,sand-dunes1 salines1 and superficial deposits4 ,,post ,,eocene 7,,oligocene874 #b4 ,basalt and ,dolerite intrusions4 #c4 ,ferruginous sandstones and quartzites1 with limonite and pisolitic iron-ore1 probably lacustrine in origin4 ,,eocene 7,,middle-,,lower47 ,,lower ,,mokattam- #d4 ,limestones with ,nummulites1 ,operculina1 ,,upper ,,libyan4 ,echinids1 ,lucina1 etc4 ,,upper ,,cretaceous4 ,,danian #e4 ,thick-bedded ,white ,chalk and grey crystalline limestone4 ,,cenomanian 7,some ,,turonian #f4 ,limestones and variegated sandstones4 or ,,senonian74 ,,cenomanian #g4 ,sandstones1 clays and marls4 ,these groups will now be dealt with in succession1 commencing with the oldest4 ,,upper ,,cretaceous4 ,,cenomanian4 #g4--,sandstones1 ,clays and ,marls--,these1 the lowest and oldest beds1 form the floor and parts of the walls of the depression4 ,they are best developed and exposed in the north end1 where their maximum thickness is about #agj metres2 the base of the series is not seen1 and thus their total thickness cannot be estimated4 ,in the north part of the oasis they are capped1 with apparent conformability1 by ,eocene limestones1 although an intervening band of limestone-grit may occasionally occur4 ,in the south1 the series is followed by the higher ,cretaceous divisions1 while in the isolated hills within the depression these beds are capped either by ,eocene limestones1 by basalt or dolerite1 or by ,post-,eocene ferruginous sandstones and quartzites4 ,they consist of friable false-bedded variegated sands and sandstones1 with harder dark-brown ferruginous bands1 alternating with sandy shales and clays1 passing through every gradation4 ,some of the sandstones are micaceous4 ,the clays are frequently saliferous1 and bands of fibrous gypsum are occasionally seen4 ,large well-formed groups of barytes crystals are occasionally found in the sandstones of the oasis-floor1 and hard thin vein-like masses of a sandstone1 in which the cementing material is barytes1 are frequently met with in the eastern part4 ,the weathering of these veins1 which are evidently produced by the action of infiltrated solutions in cracks1 gives rise to the peculiar spheroidal belted nodules which often strew the ground1 and of which the existence has been already mentioned by ,ascherson and ,zittel4 ,although these strata are1 as a rule1 unfossiliferous1 organic remains are common in certain beds1 and especially in the dark-brown ferruginous concretionary bands of the sandstones4 ,the commonest form is ,exogyra1 individuals of which are found crowded together in some bands2 in most cases they are pseudomorphs in ironstone4 ,in the hills between ,mandisha and ,el ,bawitti this series consists of soft false-bedded variegated sands and sandstones with ferruginous bands1 alternating with sandy shales1 the whole locally showing a slight westerly dip of between #c and #g4 ,some of the sandstones contain flakes of colourless mica4 ,the whole series is capped and protected by a hard bed of dolerite1 which has been intruded along a bedding plane into the series1 and now forms the summit of these hills4 ,the following section was measured about #d kilometres west of ,mandisha-- ,top4 ,metres4 ,more or less columnar dolerite1 much broken up by weathering4 #aj ,sandstones1 sandy clays2 unfossiliferous #fe ,ferruginous sandstone with casts of ,exogyra2 sandrock and sandstone1 with ferruginous unfossiliferous bands #aj ,the section is much obscured by downwash and talus of angular fragments of dolerite1 sand1 shale1 etc4 ,this downwash of shale and clay is often covered by a hard coating of salt and sand cemented together1 sometimes having the appearance of regular beds4 ,the following is a detailed section measured at the well-marked isolated conical hill near the western escarpment1 #aj kilometres north-east of ,el ,qasr 7,see ,plate ,i47 ,the series is here capped by #f metres of nodular and hard compact limestone with ,nummulites1 ,operculina1 ,lucina1 etc41 of ,lower ,eocene 7,libyan series7 age4 ,top4 7,hard compact limestone with ,nummulites1 etc41 ,metres4 ,eocene74 ,shaly clays with ferruginous bands1 occasionally containing ,exogyra shells2 alternations of shales and shaly sandstones4 #gd ,soft shaly and crumbly sandstones1 with many hard ferruginous bands and shaly clays4 ,in the sandstone occur solid vertical rods of ironstone #e centimetres in diameter1 with concentric structure #baj ,gray marls with plant-stems and leaves #ae ,yellow sandstone1 well-marked thick compact bed1 false-bedded #aae ,hard ferruginous band with fish-remains #jb ,gray shales #ae ,soft beds of crumbly sand1 harder sand-rock1 with clayey layers and ferruginous bands #fj ,shaly clays with dark-red ferruginous sandy layers1 with gasteropod and ,exogyra shells4 ,green shaly sandstone on top1 and gray sandy clays below #afj ,white and gray-bedded sand-rock #ij ,obscured beds1 one containing small ,exogyra and gasteropods4 #aej ,shaly sandstone with hard reddish nodular ferruginous bands containing gasteropods and ,exogyra4 #ce ,sandy beds1 hidden by downwash #fj ,ferruginous bands containing ,exogyra casts #bjj ,sandy shaly clay1 false-bedded1 with white sand-rock4 ,plant-remains ,bed of white sand-rock #aj ,thinly laminated gray shale #bj ,reddish-brown nodular ferruginous band #jb ,sandy or clayey beds1 obscured by downwash #ij ,sandy clay ,sandy beds with dark-brown ferruginous bands #acj ,sandstone with hard ferruginous bands1 full of ,exogyra #fj ,sandy bed1 crowded with well-preserved ,exogyra shells #jb ,yellow sandy clay with numerous ,exogyra casts #cj ,dark carbonaceous shale with obscure plant-remains #aej ,sandy beds with bone-fragments ----- ,floor of ,oasis4 #afhjda ,at the extreme north end of the depression the cliffs and the lower part of the conspicuous dark hill1 ,jebel ,horabi1 are composed of shales1 clays and sandstones belonging to this series4 ,the cliffs are capped by ,eocene limestone-grits and limestone as in the section just described4 ,the upper part of ,jebel ,horabi1 however1 consists of a mass of ironstone1 often coarsely pisolitic1 with some limonite1 and red and yellow ochre4 ,this iron-ore appears to replace the sandy beds more or less irregularly at the base1 but the great mass of mineral above is probably a later and quite distinct deposit4 7,vide under ,post-,eocene74 ,traces of shells occur in places4 ,in the isolated1 limestone-capped hill 7,plate ,i71 #f kilometres north-west of ,ain el ,haiss 7the northern spring7 these beds are more fossiliferous than usual4 ,top4 7,limestone1 the basal bed of the intermediate series74 ,limestone1 the basal bed of the intermediate series4 ,sandy beds with hard brown ferruginous concretionary bands1 containing numerous casts of ,cyprimeria 7,artemis87 ,arca1 ,cuculla1 ,odostomopsis abeitrensis1 ,baculites aff4 syriacus1 and ,neolobites ,vibrayeanus #ej m4 ,clays1 often shaly ,hard ferruginous sandstone with pockets of clean white sand ,numerous other sections at different points were examined and measured4 ,such a series is naturally very variable1 and individual beds do not maintain their characters over wide limits1 so that correlation of different sections is not possible1 except in the roughest manner4 ,in the southern part of the depression fossils are more frequent1 otherwise the beds are very similar4 ,the series under consideration is by no means poor in organic remains1 although the latter are more or less restricted to certain bands and localities4 ,no doubt most of the fossil shells have been removed by solution1 etc41 as those now existing are generally preserved as pseudomorphs in limonite4 ,the following is a list of fossils which have been obtained from this series3--#db ,cuculla sp4 ,odostomopsis abeitrensis4 ,arca sp4 ,natica sp4 ,exogyra flabellata4 ,baculites 7syriacus87 ,e4 mermeti4 ,neolobites vibrayeanus4 ,venus 7,artemis87 sp4 ,fish-teeth and bones4 ,silicified wood and plant-remains 7including leaves of ,dicotyledons74 ,as regards the age of these beds1 it has already been mentioned that the discovery of ,exogyra by ,capt4 ,lyons some years ago1 in the basal bands of the series1 showed them at least to be ,cretaceous1 although their correlation with the ,overwegi stage1 on the supposition that the specimens collected were referable to ,e4 ,overwegi1 is now shown to be inadmissible4 ,the fairly extensive assemblage of organic remains obtained from this and the overlying series enables the age of the beds to be determined with accuracy1 and ,dr4 ,blanckenhorn1 who had the first opportunity of making a careful examination of the collection1 has pronounced them to be ,cenomanian4#dc ,the general lithological character of the beds and the prevalence of false-bedded sandstones containing in places silicified wood and plant-remains1 including leaves of large trees1 point to the conclusion that the beds of this series were deposited in fairly shallow water1 perhaps in an estuary1 at no great distance from the land4 #f4--,limestones and ,variegated ,sandstones4--,in the walls of the south end of the oasis1 the series just described is always overlain by a bed of hard1 and usually more or less crystalline1 limestone4 ,this limestone forms the lowest member of the series now under discussion4 ,at the extreme southern end of the oasis1 on the western side1 this basal limestone forms a narrow platform1 of only some #bjj metres width1 separating the respective escarpments of the two series #f and #g4 ,on the same side further north the upper escarpment is usually further back1 and in some localities the beds do not form a single well-marked escarpment at all4 ,the series also occurs forming a line of hills within the depression1 these hills owing their existence to a remarkable syncline1 by which the beds in question have been folded down to the level of the floor of the depression4 ,the beds of the series form1 as a rule1 a well-marked group1 individual beds often being traceable for great distances and correlable in different parts of the oasis4 ,the group as a whole consists of alternations of brown limestone#dd 7with grey crystalline varieties7 and variegated sandstones and clayey beds4 ,a typical section1 as exposed on the west scarp in ,n4 lat4 #bg #ec1 is as follows3-- ,top4 7,buff-coloured limestone and white chalk of ,metres4 ,division #e47 #a4 ,soft brown sandstones and sandy beds1 much obscured #gf #b4 ,sandy beds1 passing up into a very hard grey concretionary sandstone1 showing ripple-marks #df #c4 ,thin-bedded dark sandstones1 mostly very hard #ae #d4 ,hard compact thick-bedded grey sandstone1 very concretionary1 false-bedded #ba #e4 ,shaly sandy beds with ferruginous concretions #ae #f4 ,brown impure limestone #jf #g4 ,soft variegated sandy beds and sandstone #ij #h4 ,rather friable buff-coloured sandstone1 more or less false-bedded1 with peculiar iron-staining #fj #i4 ,gray rather concretionary sandstone1 with dark-brown ferruginous bands #cj #aj4 ,brown crystalline limestone with calcite1 passing into harder grayish crystalline limestone1 flinty at top #fa #aa4 ,gray marls and shaly clays #cj #ab4 ,brown crystalline limestone #jf ---- #def ,base4 7,sandstones and clays of ,division #g47 ,in ,jebel ,hefhuf1 the long narrow ridge-shaped hill a few kilometres south-east of ,el ,bawitti 7,plate ,,vii71 the beds of this series are implicated in the fold1 and are found tilted at angles of #cj and #dj degrees4 ,they here consist of a considerable thickness of crystalline limestone1 calcareous grits1 shaly clays and sandstones2 the softer beds always form a gully between the harder4 ,the following were noticed at a point about #g kilometres from the western end of the ridge3-- ,top4 ,metres4 ,calcareous grit1 usually siliceous1 with bones 7often a true bone-bed74 ,sandy clays1 etc41 with silicified wood#de ,thick-bedded brown sandstone1 siliceous and #ba ferruginous in part4 ,green and gray iron-stained sandy clays ,thick-bedded brown crystalline limestone ,brown crystalline limestone with calcite cavities near base #bd -- ,base4 #de ,below come the clays and sandstones of the lowest series1 ,no4 #g4 ,in the section above1 the limestones are usually too crystalline to show any traces of organic remains1 although numerous casts of shells occur at certain points4 ,the calcareous grit1 a very well-marked bed1 has been observed at points widely distant within the oasis2 in places it is a true bone-bed1#df often highly siliceous and passing into a hard quartzite4 ,its occurrence here1 at the top of the ,cenomanian series and below the ,white ,chalk 7to be described later7 is of great interest1 as its position shows it to be probably homotaxial with the bone-beds of ,dakhla ,oasis#dg and the ,eastern ,desert1#dh where they are of ,campanian age4 ,the bone-beds on this horizon must thus have been deposited over an enormous area4 ,if followed round from the south end of the oasis along the east scarp1 the beds of this division are found to gradually become more and more calcareous1 consisting often almost entirely of limestone1#di and to dip more and more to the south-east1 till in the neighbourhood of the large sandstone-hill near the scarp in latitude #bh #e1 where the tilting reaches its maximum1 they dip at #de and partly disappear under the sandy covering of the ground between the hill and the scarp4 ,further north the dip grows less and the beds re-appear1 forming the top of the main scarp at the oasis-edge4 ,the organic remains in ,division #f include ammonites1 echinids1 with ,ostrea1 ,exogyra and masses of ,serpul2 fossil wood and fragments of bone also occur4 ,these fossils are in places abundant1 some bands being almost entirely formed of the shells of ,exogyra4 ,the ammonites1 although apparently specifically identical with those of the lower series1 attain a much greater size4 ,the assemblage of forms and the prevalence of bands of limestone point to deeper water conditions than the foregoing underlying series4 ,the following is a list of forms obtained as far as determined3-- ,rhabdocidaris1 probably nov4 sp4 ,diplopodia marticensis4 ,heterodiadema libycum4 ,toxaster radula4 ,hemiaster lusitanicus 7roachensis87 ,serpula 7,galeolaria7 filiformis4 ,pinna1 probably nov4 sp4 ,corbula sp4 9999,inoceramus cripsi4 9999,natica sp4 ,ostrea sp4 ,tylostoma syriaca4 ,exogyra flabellata4 ,turritella nov4 sp4 aff4 nodosa4 ,e4 olisiponensis4 9999,turritella sp4 ,e4 mermeti4 ,cerithium sp4 ,plicatula ,reynesi4 ,pterodonta aff4 inflata4 ,spondylus 787 ,murex4 ,modiola sp4 9999,fusus sp4 ,cardium sp4 9999,drillia pleurotomoides4 ,isocardia sp4 ,nautilus ,munieri4 9999,pachydiscus peramplus4 ,neolobites vibrayeanus4 ,footnote 99993 ,indicative of a somewhat later age than ,cenomanian4 ,the above fauna taken as a whole has a decided ,cenomanian aspect1 although some of the forms 7marked 99997 are indicative of a somewhat later age1 i4e41 ,turonian and ,senonian4 ,as the next bed above is the ,danian ,white ,chalk1 it is probable that some of the upper beds of this series form a transitional stage between the ,cenomanian and ,danian4 ,the presence of the bone-bed1 as already mentioned probably of the same age as the ,dakhla and ,eastern ,desert bone-beds1 i4e41 ,campanian1 supports this view4 ,in any case1 however1 the great thickness of beds1 of ,senonian-,danian age1 of the southern oases of ,dakhla and ,kharga1 including the bone-beds1 the ,exogyra ,overwegi series and the ash-gray shales1 is here apparently only represented by a few metres of deposits4 ,,danian4 #e4 ,thick-bedded ,white ,chalk and grey crystalline limestone4--,this series conformably overlies the upper member of the last4 ,on the west side the chalk forms a well-marked1 snow-white1 tortuous escarpment1 lying at a considerable distance 7#e to #aj kilometres7 from the oasis-wall4 ,towards the south1 however1 it approaches the depression1 its escarpment following immediately above and behind that of the underlying series4 ,south of the extreme end of the depression proper1 the chalk escarpment forms a long narrow bay1 the furthest point of which is #bj kilometres distant4 ,thence it runs northwards1 so that to the south-east of the depression the beds of the series are seen at some little distance from the oasis-edge1 but further north they appear to come to the edge and to overlie the brown limestone as part of the main scarp in the neighbourhood of the large hill already mentioned in latitude #bh #e ,n41 where the strata dip so steeply into the plateau4 ,there is some difficulty in correlating the beds of this group on the two sides of the oasis1 for while on the west they are chalky and in places fossiliferous1 being only in part altered to a crystalline limestone1 on the east1 doubtless owing to the folding which produced the strong dipping already referred to1 they are almost entirely composed of hard crystalline and horny greyish-white limestone1 apparently devoid of fossils4 7,vide p4 #fj74 ,within the depression it is probable that the ,white ,chalk is represented in part by some of the hard gray crystalline limestone in the synclinal fold of ,jebel ,hefhuf4 ,on the west and south-west sides of the depression the ,white ,chalk covers a considerable area1 which is characterized by its rough surface and by numerous depressions1 some of considerable size1 eroded by wind-borne sand4 ,to the south it extends to ,farafra1 being continuous with the chalk of that oasis4 ,lithologically1 on the west side of the oasis1 the series is represented by a thick-bedded1 snow-white1 pure foraminiferal chalk1 #cj to #de metres thick1 partly altered in the upper part into hard gray crystalline limestone4 ,it was probably deposited in water of considerable depth4 ,on the west side of the depression the ,white ,chalk yielded a fair assemblage of fossil-remains1 the chief among which were great numbers of corals4 ,in the upper part ,nautili are occasionally met with1 while ,spirorbis1 ,pecten1 ,grypha1 fragments of ,inoceramus and other shells are fairly common4 ,in addition echinids occur sparingly and sharks' teeth are seen here and there4 ,one of the best fossil localities is #bd kilometres north of ,ain el ,haiss4 ,the following is a list of those obtained3-- ,closmilia4 ,exogyra overwegi4 ,linthia nov4 sp4 ,pecten farafrensis4 ,spirorbis4 ,spondylus nov4 sp4 aff4 ,s4 ,dutempleanus4 ,inoceramus4 ,nautilus sp4 ,grypha vesicularis ,corax pristodontus4 ,as regards the age of this ,white ,chalk the fossil facies has a very young ,cretaceous aspect4 ,zittel#ej has already shown that the ,white ,chalk of the ,libyan ,desert1 studied by him in ,farafra1 ,dakhla and ,kharga1 is ,danian1 and the identity of the chalk of ,baharia with that of those oases was satisfactorily proved on the traverse from the latter oasis to ,farafra4 ,the ,white ,chalk brings our description of the ,cretaceous series of ,baharia to a close4 ,as will be shown1 it is overlain unconformably by ,eocene deposits4 ,throughout the deposition of the ,cretaceous in this area it is clear from the character of the beds that the sea-floor had been continually sinking4 ,after the deposition of the white chalk subsidence probably ceased and the area became one of elevation1 the ,cretaceous beds rising to form land4 ,during this elevation much folding must have taken place1 and subsequently gradual subsidence set in until in ,lower ,eocene times the area again became marine and the deposition of the rocks now to be described began to take place4 99 99 99 99 99 ,,eocene4 ,,upper ,,libyan--,,lower ,,mokattam4#ea #d4 ,limestones with ,nummulites and ,operculina4--,in the north part of the oasis1 both in the walls and in the isolated hills within the depression1 the lower ,cenomanian beds1 the 8,sandstones1 clays and marls10 are directly overlain by buff-coloured or yellowish limestone of ,eocene age1 containing ,nummulites1 ,operculina1 ,ostrea1 etc4 ,the beds of the two series being horizontal1 the junction is one of apparent conformability1 but in many localities the base of the ,eocene is marked by a bed of limestone-grit1 indicating the break in continuity of deposition which is known to have occurred from the respective ages of the beds in question and from a study of the same beds further to the south4 ,in a traverse across the plateau to the west of ,bawitti1 ,operculina-limestones with nummulites were found to form the surface of the desert4 ,again on the traverse from ,maghagha to the oasis1 already described1 no ,cretaceous beds were crossed1 so that the plateau ,n4,n4,e4 and ,n4,w4 of the northern end of the oasis is entirely formed of ,eocene rocks4 ,on the east side1 however1 no certain evidence of ,eocene age in the beds capping the scarp has been found south of the fault which cuts the scarp as the prolongation of the sharp syncline of ,jebel ,hefhuf4 ,further south1 on the west side1 a very dissimilar succession was found to that on the north4 ,here at a distance of #bj kilometres from the oasis wall1 at a point #cj kilometres north-west of ,ain el ,haiss1 the uppermost member of the ,cretaceous1 the ,white ,chalk itself1 is overlain by a hard gray crystalline limestone containing an abundance of ,nummulites and ,operculina1 with ,lucina1 ,fusus and ,natica4 ,the actual junction of the two series is here difficult to detect1 as the ,white ,chalk is itself altered in its upper part into a hard gray crystalline limestone1 simulating the ,eocene beds themselves1 and there is little difference of dip between the two series4 ,the following foraminifera have been determined from this locality by ,mr4 ,f4 ,chapman3--#eb ,textularia8 gramen ,n4 discorbina ,globigerina bulloides ,n4 sub-discorbina ,operculina complanata1 ,orbitoides 7,discocycloides7 var4 discoidea dispansa 7,o4 dilabida1 ,schwager74 ,nummulites gizehensis1 var4 ,pachoi ,n4 curvispira ,within the synclinal fold at one point 7,plate ,,vii71 #ag kilometres north-east of ,ain el ,haiss1 ,eocene echinids and nummulites were found1 but the beds from which they had weathered had been almost completely removed by denudation4 ,the echinids have been recognized by ,blanckenhorn as the following3-- ,porocidaris ,schmedeli4 ,echinocyamus luciana4 ,sismondia ,smanni4 ,the following two species of nummulites have been determined by ,chapman3-- ,nummulites ,beaumonti4 ,n4 sub-,beaumonti4 ,sidenote3 ,beds of east side of depression4 ,in the scarp due north of ,harra1 the ,cenomanian sandstones and clays with ,exogyra mermeti and ,e4 africana are conformably overlain by a hard yellow crystalline limestone containing small nummulites2 so that here the ,eocene clearly overlies the ,cenomanian beds4 ,if this upper limestone bed be followed southwards along the scarp 7see the sections on ,plate ,,viii7 it appears to be continuous as far as the road leading to ,ain ,haswi1 where the ground forming the bottom of the oasis-depression rises to the level of the limestone1 and the clays are completely hidden by sand and limestone-debris4 ,there commences here1 however1 a considerable thickening of the limestones1 and hard brown limestones1 with calcite-filled cavities1 and some soft earthy beds come in2 so that here we have the beginning of the series 7,no #f7 which has been described as recurring on the opposite scarp in the same latitude1 and which forms the hills north-west of ,harra4 ,the topmost bed of the scarp is a hard crystalline limestone1 which appears continuous with that containing nummulites further north1 and the top of the plateau is therefore probably here also ,eocene4 ,a little further south1 the plateau-surface is covered with countless small hills of white chalky limestones with siliceous beds2 these beds were searched without result for fossils1 but as they overlie the hard crystalline rock1 above mentioned as probably ,eocene1 they must be of ,tertiary age1 and therefore do not correspond with the ,danian white chalk of the western plateau4 ,as the large hill near the plateau east-north-east of ,ain el ,haiss is approached1 the thickening of the lower crystalline brown and grayish-white limestones is very marked1 and here they probably comprise both ,cenomanian and ,danian rocks2 but the dip south-eastward is so strong that the ,eocene must be close to the edge of the plateau1 while the folding doubtless accounts for the crystalline nature of the rocks and their poverty in fossils4 ,south of the large hill1 a second plateau is met with at a distance of about a kilometre eastward from the main scarp2 this second plateau consists of soft chalky beds similar to those above-mentioned1 underlain by clays and sandstones1 while the main scarp still exhibits brown and grayish crystalline limestones1 though both the dip and the thickness of these beds become gradually smaller4 ,as the south point of the oasis is approached the limestones thin out1 till at the end only a few beds of hard yellow-brown limestone occur in the clays2 these beds are continuous with those containing ,cenomanian fossils on the west plateau4 ,thus at the south-east portion of the scarp the ,danian is either absent1 or represented by very thin beds at a little distance from the oasis4 ,it might be suggested that the soft chalky limestones which form the second or upper plateau correspond with the ,danian white chalk of the west side2 but several considerations tend to negative this view4 ,in the first place1 it has been mentioned above that similar soft chalky limestones occur at about the same horizon further north1 where they overlie beds which are probably ,eocene4 ,again1 on the line followed from the south end of the oasis of ,minia1 nummulites were found in abundance only a few kilometres away from the oasis4 ,and lastly1 these chalky limestones never show folding comparable with that of the lower beds1 a fact which seems nearly conclusive in view of the unconformity known to exist at other points between the ,cretaceous and the ,eocene4 ,if the ,eocene age assigned above to the chalky limestones of the eastern plateau be correct1 it is possible that the clays and sandstones which underlie and separate them from the ,cretaceous limestones may represent the ,esna ,shales of the more southern oases1 though sandstones are elsewhere absent from this series4 ,unconformity and overlap4--,from the above description of the ,eocene rocks of ,baharia we see that their relation to the underlying ,cretaceous system is one of unconformable overlap4#ec ,in the north part of the oasis we have the ,eocene 7,up4 ,lib4-,low4 ,mok47 overlying directly the lower beds of the ,cenomanian2 further south1 on the west1 the same beds overlie the ,white ,chalk of ,danian age1 and no doubt at an intermediate point the ,eocene overlies the intermediate beds4 ,on the east side1 though the actual demarcation of the ,eocene and ,cretaceous beds is a matter of some difficulty1 the difference of dip between the two systems in some localities is well marked4 ,it seems certain then that after the deposition of the ,cretaceous beds in this region1 elevation took place with a considerable amount of folding 7which will be noticed fully further on74 ,the land thus formed underwent a marked denudation before subsidence took it below the surface of the sea and allowed of the deposition of the ,eocene deposits just described4 ,,post-,,eocene 7,,oligocene874 #c4 ,ferruginous grits and quartzites1 with limonite and pisolitic iron-ore4 ,as already mentioned1 one of the most striking topographical features of the oasis is the number of isolated black1 and for the most part perfectly conical1 hills within the depression4 ,these hills are composed of the lower ,cenomanian sandstones and clays of the ,cretaceous1 and owe their existence and dark colour to protecting caps of very hard1 dark1 ferruginous1 silicified grits and quartzites1 often associated with limonite4 ,the first impression obtained on examining these rocks1 is that they are merely silicified and ferruginous bands of the sandstone series below1 which forms the general oasis-floor and part of the walls and hills4 ,a careful investigation of the deposits over a large area1 however1 shows this view to be untenable2 for while in most of the isolated conical hills within the depression1 the beds in question cap the lower sandstones and clays 7,no4 #g7 of the ,cenomanian1 on a portion of the edge of the western plateau they cap the bed of limestone 7basal member of ,no4 #f7 which itself caps the lower sandstones and clays4 7,plate ,i74 ,there must therefore be an unconformable overlap below the two series4 ,this is further borne out by the facts1 first1 that the ferruginous silicified grit has never been observed to pass under the limestone in the walls of the oasis1 although found capping hills in close proximity2 and secondly1 that the limestone never occurs below the ferruginous silicified grit in the isolated conical hills4 ,the former would happen if the deposit in question represented the top of the sandstones and clays1 the latter if it represented the next bed above the limestone4 ,furthermore1 these beds are found capping hills close to the oasis-wall1 and occurring on exactly the same level as the limestone capping the latter1 suggesting at first sight some sort of connection between the two2 the beds are1 however1 so entirely different that it is not possible to imagine the one to be an altered condition of the other2 moreover1 if such were so1 the gradual passage of limestone to the ferruginous beds should be visible1 but such has never been observed4 ,the only possible view of the origin of these beds1 consistent with the above facts1 is that they represent a far younger deposit than the strata on which they lie1 a deposit formed in fact in a slight depression in the ,eocene and ,cretaceous rocks1 long anterior to the time when erosion was carving out the area to its present form4 ,the pisolitic character of the iron-ore of ,jebel ,horabi and the usually large amount of ferruginous material1 as well as the general character of the beds1 indicate shallow-water lacustrine deposition and precipitation4 ,no organic remains have as yet been observed in these deposits4 ,it should be mentioned here that it is frequently impossible to draw any sharp of line of demarcation between these deposits and the undoubted ,cenomanian sandstones below1 when they rest on the latter in the hills within the depression4 ,the sandstones themselves are frequently ferruginous and limonitic in their upper layers4 ,this1 however1 is easily explained on the supposition that there would have been considerable infiltration into these porous sandstones forming the lake-floor1 with consequent deposition of ferruginous material4 ,lithologically the beds in question present a considerable similarity to the quartzites and hard ferruginous sandstones of ,jebel el ,ghudda and ,gar el ,hamra on the road from ,feshn to the oasis 7ante1 p4 #ah1 #bj71 and also to the beds of ,jebel ,ahmar1 near ,cairo1 and in parts of the ,fayum4 ,in the absence of evidence of their precise age1 they may be provisionally classed as ,oligocene4 ,sidenote3 ,jebel ,horabi4 ,a short description of these beds in a few special localities will now be given4 ,this well-marked hill1 situated at the extreme northerly end of the depression1 consists of a mass of ferruginous material1 including limonite1 pisolitic iron-ore1 red and yellow ochre1 etc41 lying on a series of sandy shales1 clays and sandstones belonging to the ,cenomanian 7,series ,no4 #g74 ,thin bands of limonite1 etc41 occur in the clays and sandstones1 but the great mass of mineral appears to form a distinct deposit capping1 and in part replacing1 the former4 ,the iron-ore occurs in every stage of purity4 ,samples from ,jebel ,horabi1 analysed by ,mr4 ,a4 ,lucas1 gave the following results3-- ,pisolitic ironstone ,ferric oxide #ehfh #dajg iron4 ,limonite #hajf #ehhd ,sidenote3 ,isolated hills in centre of ,oasis4 ,these hills all show the same characters1 with the exception of one or two capped by limestone or basalt4 ,they consist of sandstones1 with occasional shales and clayey bands1 of the ,cenomanian series 7,no4 #g7 capped by a hard brown or black silicified ferruginous grit1 which frequently passes into a typical quartzite4 ,this cap may be of any thickness up to some seven or eight metres4 ,its junction with the sandstones below is generally obscured by the mass of talus lying on the slopes1 but where visible it is difficult to draw any line of demarcation between the two1 there being in some cases a more or less gradual increase of hardness and ferruginous material from the upper part of the sandstones upwards4 ,in one hill an ordinary yellow sandstone was observed1 when followed up1 to contain an increasing number of ferruginous concretions1 at first in isolated lumps1 or strings1 but higher in such quantity as to present the appearance of a breccia1 which latter gradually passed up into a hard dense mass of ferruginous quartzite4 ,this at first sight suggested a similar age for the whole rock-section1 but would be quite explicable on the supposition of infiltration1 as suggested above4 #b4--;,basalt and ,dolerite4--,three large hills in the north-west of the oasis1 notably ,jebel ,mayesra1 ,jebel ,mandisha1 and the northern half of ,jebel ,hefhuf1 are capped with a basic volcanic rock1 the existence of which was noted by ,cailliaud#ed so long ago as #ahbj4 ,ascherson#ee further studied the distribution of this rock in #ahgf1 and collected specimens which were carefully examined later by ,prof4 ,zirkel4#ef ,the latter diagnosed the rock as a typical plagioclase-basalt1 strongly resembling that of the ,giant's ,causeway2 it is finely holocrystalline1 containing augite1 plagioclase and olivine1 with some magnetite and ilmenite1 and very sparing flakes of biotite2 the resemblance of the rock to basaltic intrusions in ,tripoli and at ,abu ,zabel 7between ,cairo and ,bilbeis7 is remarked on by ,zittel and ,ascherson1 and the opinion that it was intruded into the sandstones in later ,tertiary times is put forward4 ,the basaltic intrusions occur at four separate points in the oasis1 representing two more or less inclusive areas2 the total area covered by the rock is about #ad square kilometres4 ,the intrusion appears to have been in the form of laccolites2 in ,jebel ,hefhuf the basalt is intrusively interbedded in the ,cenomanian1 between the lower sandstones and the overlying limestone1 both of which rocks show distinct signs of contact-metamorphism4 ,the sandstone shows generally very little alteration1 though in some places much hardened2 while the limestone is highly crystalline and of a beautiful red colour near the igneous rock4 ,the crystalline nature is1 however1 more due to folding than to contact-metamorphism1 as it occurs in all the limestones of the neighbourhood4 ,in several places the vertical pipes1 up which the molten mass was thrust1 with disturbance of the sandstone1 can be traced2 and dykes are occasionally seen near the edge of the deposits4 ,the section seen in ,jebel ,mandisha is as follows3-- ,top4 ,metres4 ,columnar basalt and dolerite1 much broken up by weathering #ib ,sandstones1 clays and sandy shales #fdj ,ferruginous sandstones with casts of ,exogyra 7thin bed7 #ib ,sand-rock and sandstone with ferruginous bands ---- #hbd ,in a small -shaped hill in lat4 #bh #df ,n41 long4 #bh #dh ,e4 of ,g4 a mass of basalt occurs which appears to be mainly the remains of a large pipe or 8neck40 ,the igneous rock here shows flow-structure at the sides1 being hard and crystalline in the centre4 ,it has altered the sandstones at the contact very considerably1 converting them into a greenish rock full of chalcedony4 ,here1 as in the other deposits1 the basalt shows distinct columnar jointing and the resulting blocks weather into spheroidal masses where exposed4 ,the igneous rocks of ,baharia are therefore ,post-,cretaceous in age and it seems reasonable to assume1 as suggested by ,mayer-,eymar1#eg that they are of ,lower ,oligocene age1 contemporaneous with the basalt-sheets of the ,fayum1 of ,abu ,roash and the desert to the west1 and of ,abu ,zabel4 ,the andesite neck passed on the road between ,maghagha and the oasis 7p4 #bb7 and the larger masses of ,bahnessa and other places in the ,western ,desert were likewise probably erupted at the same time4 ,,recent4 #a4--,,sand-,,dunes1 ,,salines ,,and ,,superficial ,,deposits4 ,blown ,sand1 carried along by the prevailing north and north-west winds1 is heaped up against all obstacles in its path1 such as hills and vegetation2 sometimes it is carried over these obstacles1 only to fall and accumulate in the wind-shadow on the other side4 ,the cultivated lands of the villages are for the most part surrounded by sand-accumulations1 and some low dunes occur in various parts of the oasis2 the positions of the latter will be better gathered from the maps than from any mere description4 ,baharia itself is more free from sand than any of the oases to the south of it1 but even here the deposits of this material are very considerable1 and as already mentioned extensive sand-dunes occur on the desert to the east1 at a short distance from the depression4 ,salt-swamps occur in the north of the oasis1 having probably been produced by the overflowing of springs forming lagoons1 which have taken the salt from the surrounding clays1 the water from the springs only containing a small percentage of salt4 ,the salt-swamps round ,mandisha are now covered with a thin rough dry white crust of salt mixed with clay and sand2 when this is broken through a salty sludge is seen to exist below1 sometimes in a quite liquid state2 the depth of sludge is probably not very great1 but there is enough to immerse a camel up to its neck1 as was found by experience during the survey4 ,clays4--,sandy clays of recent origin occur at isolated spots on the floor of the oasis1 notably near ,ain el ,haiss1 where they are now being rapidly removed by the action of the wind4 ,many of the springs are also depositing a certain amount of clay on the low ground4 ,,the ,,tectonics ,,of ,,the ,,oasis4 ,the rocks of the district have undergone a considerable amount of disturbance along certain lines4 ,the most important fold is a well-marked syncline beginning at the west scarp in lat4 #bh #g ,n4 and running across the depression in a direction #cj north of east until it strikes the eastern escarpment in lat4 #bh #bc4 ,this synclinal fold is remarkably sharp1 the width being generally only a few hundred metres1 but the dips so strong as to bring the limestone beds nearly vertical in places4 ,along the line of fold we find the whole of the series #f and #g brought down to the level of the floor of the oasis1 but on either side the beds so quickly regain their horizontal position that no trace of the folding is to be seen 7,plate ,,vii74 ,the ,white ,chalk in these folds is always altered by pressure into a hard crystalline limestone1 as are also the limestones of the ,cenomanian below4 ,the fold is not actually continuous across the area1 but is in reality made up of a number of long narrow ellipsoidal depressions1 or cup-shaped hills1 in which the end-dips are always less strong than those of the sides4 ,at its most southerly point1 where it runs into the scarp #ad kilometres north-west of ,ain el ,haiss1 the two series #f and #g are found dipping northwards at angles up to #dj 7and at one spot #gh74 ,on the other side of the fold the same beds dip southwards at only #e1 and the appearance of the fold at this point suggests the existence of an accompanying fault 7fig4 #a74 ,illustration3 ,fig4 #a4--,section across ,syncline1 #ab kilometres ,n4,w4 of ,ain ,haiss4 a4 ,shales and sandstones with ,exogyra1 ,arca1 ,cucullaea1 etc41 ,neolobites vibrayeanus1 etc4 b4 ,hard crystalline limestone with flints4 c4 ,sandstone passing into hard quartzite4 d4 ,variegated sandstones with bands of sandy limestone4 e4 ,hard dark-brown siliceous crystalline limestone4 f4 ,calcareous grit 7 bone-bed7 passing in part into sandstone1 and capped by hard crystalline limestone with shells4 ,between this point and ,jebel ,hefhuf the fold is marked by a line of low isolated limestone-capped1 cup-shaped hills1 the largest and best marked of which is #af kilometres north of ,ain el ,haiss4 ,here the maximum dip amounts to #ee on the western side of the basin-shaped hill4 ,jebel ,hefhuf is1 perhaps1 the most striking part of the fold4 ,the southern portion owes its existence entirely to this syncline1 consisting as it does of a long1 and remarkably narrow1 ridge-shaped hill of folded rocks4 ,dips of #ej and #fj are common in places1 and the limestones implicated in the fold are usually rendered hard and highly crystalline4 ,the highest crystalline limestones in ,jebel ,hefhuf probably represent the ,white ,chalk1 but the beds are too crystalline to show any traces of fossils4 ,it is noteworthy that all the basaltic rocks of the oasis occur on the north-west side1 and at no great distance from this syncline4 ,to the north-east of ,jebel ,hefhuf the line of fold passes apparently between the range of elongated hills west of ,harra and the larger somewhat triangular hill to the north of it1 and although the limestones and clays of these hills show a considerable amount of folding they do not exhibit it in so striking a manner as ,jebel ,hefhuf4 ,continuing the line till it cuts the last scarp1 we arrive at a prominent sandstone headland1 in the gullies on either side of which the folding can be very well seen4 ,to the west of the headland the beds are thrown sharply up in the valley so as to be nearly vertical2 this up-throw has resulted in an actual fault1 the denuded edges of the vertical sandstone and clay-beds being overlain by a horizontal bed of limonite4 ,the nose of the promontory is of sandstone1 this being thrown up somewhat on the south-east side of the fault2 the upper sandstone and clay beds dip south-east again somewhat sharply on the face of the headland and come down to the level of the oasis floor4 ,it would seem therefore that at this point we have the syncline between two sharp anticlines1 the north western of which has culminated in the fault4 ,the southern end of the oasis is cut out in a well-marked gentle anticline4 ,on the west side from ,ain el ,haiss southwards the whole succession of ,cretaceous rocks dip steadily to the north-west at from four to five degrees1 while those on the east scarp show an equally constant dip to the south-east1 which increases further north1 till in the neighbourhood of lat4 #bh #e its magnitude reaches #de2 it becomes gradually less further northwards4 ,owing to this strong tilting of the beds1 the large hill near the scarp consists entirely of sandstones and clays with a cap of quartzite and limonite1 although nearly or quite as high as the scarp2 the beds here recover their nearly horizontal position at a very short distance north-west of the line of folding1 as do also those of the plateau on the other side the line4 ,besides the above-described disturbances of the beds1 there are some smaller local disturbances which are extremely well-marked4 ,thus for instance the large flat-topped hill in ,n4 lat #bh #g and ,e4 long4 #bh #dh1 like several smaller hills ,e4,s4,e4 of it1 bears a cap of limestones1 although its height is less than that of the sandstone hills around it4 ,the section of this hill at its western side is as follows3-- ,top4 ,metres4 ,silicified limestone #jf ,hard impure chalk #bd ,silicified limestone #ab ,pale green soft sandy and clayey limestone #fa ,sandy ferruginous conglomerate #jc ,clays with sandy and ferruginous layers1 extending to oasis floor4 approximately #bbj ---- #cbf ,the beds are horizontal1 and the neighbouring smaller hills which possess a similar limestone covering are precisely of the same height4 ,it would seem impossible to account for these limestone caps in the midst of higher sandstone hills except by assuming that they mark the positions of islands1 subsequently denuded1 in the post-,eocene lake which deposited the limonite caps on the other hills2 at the same time they evidently represent part of a synclinal fold1 though the horizontal position and non-crystalline character of the beds show that this syncline must have been wide and shallow4 ,it is scarcely possible to think there can have been a locally calcareous deposit from the lake which generally deposited the sandstone and limonite2 the sudden transition from the black sandstone and limonite of the surrounding hills to the snow-white limestones of those under consideration is so strongly marked in the field as to forbid such a supposition4 ,at the same time1 no fossils were found in the beds1 so they cannot be satisfactorily correlated with the limestones of the oasis-scarps1 and they are of somewhat variable character at different points of the hill4 ,it is evident then that in the south part of the depression the ,cretaceous beds as a whole form a large flat anticline1 which is continuous with that of ,farafra to the south4#eh ,this bears out the statement of ,capt4 ,h4 ,g4 ,lyons1#ei some years ago1 that he believed ,baharia and ,farafra ,oases to lie on an anticlinal at right angles to that of ,dakhla and ,kharga4 ,the anticlinal and synclinal folds of ,baharia are parallel and were evidently produced by the same earth-movements4 ,sidenote3 ,age of the folding4 ,within the oasis-area too1 some other traces of folding are visible2 in lat4 #bh #aa ,n41 long4 #bi #a ,e4 are two small hills of clays and sandstones 7the latter locally green in colour71 the beds of which dip about #cj ,e4 and ,w4 respectively1 showing a local anticline whose axis runs nearly north-and-south4 ,in this neighbourhood1 as in the oasis generally1 it is not possible to trace the folding in the beds of the low ground1 owing to its thick sandy covering4 ,another point of disturbance is on the western plateau in ,n4 lat4 #bh #bf1 ,e4 long4 #bh #di1 some #aa kilometres north-west of ,el ,qasr4 ,here 7,fig4 #b7 along a ,n4,e4 and ,s4,w4 line1 crossing an otherwise level plateau1 the ,eocene beds1 and probably also the ,cretaceous below1 are thrown up in a sharp anticlinal fold1 which however1 is not continuous but consists of a number of isolated bulges1 with dips up to #ej4 ,the plateau at this point consists of ,eocene ,operculina and ,nummulitic limestone1 and the effect of the anticlinal fold is to expose the beds of sandstone below1 which1 as already mentioned1 are probably ,cretaceous4 ,illustration3 ,fig4 #b4--,sketch showing probable relations of ,eocene and ,cretaceous in anticline on ,western ,desert plateau1 #aa kilometres ,n4,w4 of ,el ,qasr4 ,,eocene4--#a4 ,grey crystalline limestone4 #b4 ,hard white gritty chalky limestone4 #c4 ,grey calcareous sandstone4 #d4 ,limestone with ,nummulites and ,operculina4 ,,upper ,,cretaceous4--#e4 ,calcareous-grit4 #f4 ,white sandstone4 #g4 ,crystalline limestone4 #h4 ,cenomanian clays and sandstones with ,exogyra flabellata1 ,e4 ,mermeti and ,e4 olisiponensis1 etc4 ,with regard to the age of the tectonic movements which produced the synclinal and anticlinal folds of ,baharia1 it must be admitted that it is not easy to speak with absolute certainty1 owing to want of evidence at one or two points4 ,it appears certain1 however1 that they belong to two great movements1 separated by a vast interval in time4 ,the first disturbance of the beds would appear to have taken place at the end of the ,cretaceous period1 when it seems probable that the area in question underwent upheaval into dry land4 ,it seems tenable that it was during this movement that the large flat anticline1 so well seen in the south part of ,baharia and in the north of ,farafra1 was produced1 as the ,eocene beds forming the plateau immediately to the east of the ,cretaceous beds do not show any sign of disturbance4#fj ,the subsiding ,cretaceous land1 on which these ,eocene deposits were laid down1 must therefore have had the form of a long1 flat1 irregular ridge of anticlinal structure1 probably extending from ,dakhla through the oases of ,farafra and ,baharia to ,abu ,roash4 ,the other folds of ,baharia1 being parallel to the anticline just dealt with1 would at first sight appear to date from the same movement4 ,with regard to the syncline1 however1 two observations appear which force us to consider its age as very much later2 these are1 first1 the occurrence of nummulites and other ,eocene fossils within the fold at a point #af kilometres north of ,ain el ,haiss1 and secondly1 the fact that at the northern extremity of the fold1 where it meets the eastern scarp1 the ,eocene beds are affected4 ,with regard to the first of these1 the beds themselves1 from which the fossils had been derived1 were not observed to be actually affected by the fold1 and therefore the evidence here1 although suggestive1 is not conclusive4 ,the evidence at the north end of the fold1 however1 if substantiated1 proves that the age of the fold must be post-,eocene4 ,with regard to the anticlinal fold on the north-western plateau there is no question1 as this clearly affects the ,eocene beds2 it also is parallel to the other folds4 ,these folds affecting ,eocene beds1 lead us to the conclusion that there was another period of possibly ever more important earth-movements1 of the exact date of which we cannot be certain1 although it is not impossible that it was closely connected with those great earth-movements of ,pliocene times1 which gave rise to the chief topographic fixtures of ,n4,e4 ,africa and ,s4,w4 ,asia4 ,sidenote3 ,summary4 ,summary of the ,geological ,history of the ,oasis4--,the oldest#fa sedimentary deposit in ,egypt is the ,nubian ,sandstone of the ,cretaceous4 ,from the general absence of marine shells in this rock we may premise that the deposit was laid down in an inland sea or lake1 which must have covered an enormous extent of country4 ,in the northern part of ,egypt the upper part of the ,nubian ,sandstone becomes fossiliferous1 the fauna having an undoubted ,cenomanian aspect2 this is the case in ,wadi ,araba1 at ,abu ,roash and in ,baharia4 ,further to the south1 however1 as in ,dakhla1 the ,nubian ,sandstone first becomes fossiliferous in ,senonian times4 ,we may explain this difference in the two localities on the supposition that a gradual subsidence was taking place with a corresponding gradual encroachment of the sea from the north1 which covered the northern part of the country 7including ,wadi ,araba1 ,abu ,roash and ,baharia7 in ,cenomanian times but did not reach the latitude of ,dakhla till considerably later1 i4e41 in ,senonian times4 ,from the ,cenomanian onwards throughout the ,cretaceous1 the ,baharia area was one of continued subsidence1 the lithological and palontological characters of the beds showing evidence of a gradual increase in conditions of depth1 until the maximum was reached in the deposition of the ,white ,chalk in ,danian times4 ,between the deposition of the uppermost ,cretaceous rocks and the ,eocene it is probable that a considerable interval elapsed1 during which the ,cretaceous was elevated into land1 with much folding and fracturing of the rocks and subsequent denudation4#fb ,it was probably during this upheaval that the ,cretaceous of ,baharia assumed its anticlinal structure4 ,subsequently1 subsidence taking place1 the ,eocene sea submerged the area1 and deposits were laid down on the uneven ,cretaceous land in an unconformable and overlapping manner4 ,in ,baharia the lowest member of the ,eocene of ,egypt1 the ,esna ,shales1 is not present1 although further to the south towards ,farafra it has been observed4 ,on the east side1 some sandstones and clays met with below the white chalk beds of the outer plateau may belong to this division4 ,the first undoubted ,eocene deposits in the ,baharia area are the limestones with ,operculina and ,nummulites which unconformably overlie different members of the ,cretaceous in the north and west sides1 and eastward of the south end4 ,the whole of the ,eocene deposits are here1 however1 only a few metres thick1 which contrasts strangely with the enormous thickness of the deposits of the same age in the ,nile ,valley4 ,this is intelligible1 however1 on the supposition that near the subsiding ,cretaceous land the conditions for continued accumulation of deposits were not so favourable as further to the east1 where deeper water conditions obtained4 ,subsequently1 in ,post-,eocene times1 the whole underwent upheaval1 and it is probable that during this elevation the main synclinal fold#fc was produced1 together with the minor anticline4 ,the evidence for placing the date of the formation of the syncline anterior to the deposition of the ferruginous grits1 limonite1 etc4 7,series ,no4 #c7 stands on the following basis3 the absence of proof of the folding in question having affected the beds of ,series #c1 and the presence of a horizontal deposit of limonite on the upturned edges of the strata1 at the point where the fold meets the eastern scarp 7page #ff74 ,about the same time1 probably1 basalt and dolerite was intruded into the ,cenomanian rocks below4 ,sidenote3 ,formation of depression4 ,as a result of the sharp folds the upper limestones were cracked1 and their denudation by natural agencies followed1 forming a slight hollow similar in shape to that which the oasis now exhibits2 the agent of denudation cannot be stated with certainty1 but whatever force came into operation it would find easy work in the cracked-up rocks1 and still easier would be its task in partly removing the soft ,cenomanian sandstones and clays after the harder limestones had disappeared4 ,the primary excavation of the hollow was followed by the formation of a great lake1 in which were laid down deposits of sandstone1 quartzite1 and iron-ore2 this lake doubtless surrounded islands1 represented to-day by those hills which still preserve their limestone-caps2 it extended1 or similar lakes existed1 beyond the oasis-limits1 forming the quartzites and ferruginous sandstones passed on the way from ,maghagha to ,baharia1 and was perhaps continuous with the ,oligocene and post-,oligocene sea which covered a large part of the country to the north4 ,in later times the area finally became continental and denudation gradually sculptured the oasis to its present form2 this sculpturing would no doubt proceed rapidly in the moist climate which is known to have existed in ,egypt in ,pliocene and early ,pleistocene times1 and is being continued to-day by the powerful agency of the desert wind-borne sand and changes of temperature4 ,the water-supply of the oasis is probably derived from the tropical rains of the mountainous regions of ,central ,africa1 the water from which penetrates the ground and flows northwards along permeable beds of sandstone1 etc41 in which it is confined by other impermeable strata1 until tapped naturally or artificially in the great oases or depressions of the ,libyan ,desert4 99 99 99 99 99 ,footnote #ce3 ,voyage ,mro1 etc41 op4 cit4 ,footnote #cf3 ,geologie1 u4 ,palontologie der ,libyschen ,wste4 ,cassel1 #ahhc4 ,footnote #cg3 ,zittel had divided the ,cretaceous of the ,western ,oases into the following main divisions3-- ,top4 #a4 ,well-bedded limestone and earthy chalk4 #b4 ,greenish and ash-grey shaly clays4 #c4 ,beds with ,exogyra ,overwegi4 ,footnote #ch3 ,on the ,stratigraphy and ,physiography of the ,libyan ,desert of ,egypt1 ,quart4 ,jour4 ,geol4 ,soc41 ,nov4 #ahid1 ,vol4 #ej1 p4 #ece4 ,footnote #ci3 ,letter from ,prof4 ,zittel to ,capt4 ,lyons1 dated ,may #aith1 #ahid4 ,it was afterwards suggested 7,,beadnell1 op4 cit4 ,int4 ,geol4 ,congress1 p4 #aj7 that these specimens were possibly not ,e4 ,overwegi at all1 and ,mr4 ,bullen ,newton1 of the ,british ,museum1 who has undertaken the determination of the ,baharia collection1 confirms this1 stating that the so-called specimens of ,exogyra ,overwegi1 referred to in ,capt4 ,lyons' paper1 are in reality examples of ,e4 mermeti4 ,footnote #dj3 ,a short account of the geological structure of ,baharia has already been published3-- ,,beadnell1 op4 cit4 7,dcouvertes ,gologiques ,rcentes1 etc47 ,int4 ,geol4 ,cong4 #aijj2 ,paris1 #aijj4 ,footnote #da3 ,this1 with the #f metres of ,eocene limestone above1 gives the height of the hill above the floor as #agd metres4 ,ascherson gives #afb1 but the difference is probably due to our readings being commenced on the lowest ground in the neighbourhood1 where the oldest beds were exposed4 ,footnote #db3 ,the specific names given in this report are based on determinations made by ,dr4 ,blanckenhorn in ,cairo and by ,mr4 ,bullen ,newton at the ,british ,museum4 ,footnote #dc3 ,in connection with the discovery of ,cenomanian deposits in ,baharia ,oasis1 vide1 ,geological ,magazine1 ,nos4 #abg1 #dcj1 #dcb1 #aijj 7,h4 ,j4 ,l4 ,b474 ,footnote #dd3 ,a very striking feature of the brown limestones is the abundance in them of calcite-lined cavities2 these are often arranged in planes parallel to the bedding1 as is well seen for instance in the hills north-west of ,harra4 ,footnote #de3 ,mr4 ,gorringe first drew attention to the presence of fossil wood in these beds4 ,footnote #df3 ,an analysis of this bone-bed is given in ,report on the ,phosphates of ,egypt1 ,geol4 ,surv4 ,egypt1 publication1 ,cairo4 #aijj4 ,footnote #dg3 ,,beadnell1 ,dakhla ,oasis1 its ,topography and ,geology4 ,geol4 ,surv4 ,egypt4 ,report1 #ahii1 ,pt4 ,,iv4 ,cairo4 #aija1 pp4 #if-ih4 ,footnote #dh3 ,,barron and ,,hume1 ,topography and ,geology of the ,eastern ,desert of ,egypt1 ,geol4 ,surv4 ,report1 ,cairo1 #aijc4 ,footnote #di3 ,it may perhaps be that the lowest limestone bed disappears1 having thinned out1 in which case it is difficult to distinguish the sandstones and clays of this division from those of the one below4 ,footnote #ej3 ,zittel1 op4 cit4 ,footnote #ea3 ,as it seems probable that the ,lower ,mokattam is a somewhat local development of the upper part of the ,libyan ,series1 and it being difficult or impossible in many areas to separate the two1 we shall in our description of the ,eocene of this oasis make no attempt at a division4 ,footnote #eb3 ,,chapman1 ,geol4 ,mag4 ,dec4 ,,iv1 ,vol4 ,,ix1 ,feb4 and ,march1 #aijb1 pp4 #fb-fg1 #ajf-aad4 ,footnote #ec3 ,it should be noted here that the presence of an overlap was suspected by ,capt4 ,h4 ,g4 ,lyons as long ago as #ahid1 as in his paper 7op4 cit4 #ece7 he says3-- 8,at the north-east and east of the ,baharia ,oasis the ,upper ,mokattam beds1 characterized by ,ostrea ,fraasi and ,o4 ,cloti 7as kindly determined by ,dr4 ,zittel71 occur #cj miles north-east and #bj miles east of ,upper ,cretaceous beds containing ,exogyra ,overwegi in the oasis1 and with a difference in altitude of less than #bjj feet4 ,as there is no marked dip of the beds1 we have evidently an overlap of the remainder of the ,cretaceous beds and the ,libyan and ,lower ,mokattam beds of the ,eocene1 and this inference is borne out by the short distance between the ,cretaceous and ,miocene outcrops to the west on ,dr4 ,zittel's route to ,siwa40 ,footnote #ed3 ,voyage ,mro1 ,i41 p4 #ahi4 ,the same observer also noted the presence of nummulites in the northern scarp1 and the ferruginous nature of the sandstones composing the hills of the oasis 7p4 #aij74 ,footnote #ee3 ,zeitsch4 d4 ,ges4 f4 ,erdkunde zu ,berlin1 #ahhe1 p4 #acd4 ,footnote #ef3 ,geol4 d4 ,liby4 ,wste1 #ahhc1 pp4 #abb1 #abc4 ,footnote #eg3 ,le ,ligurien et le ,tongrien en gypte1 ,bull4 ,soc4 ,gol4 ,france1 sec4 ,,iii1 vol4 ,,xxi 7#ahic74 ,footnote #eh3 ,,beadnell1 op4 cit4 7,farafra ,oasis7 p4 #bh4 ,footnote #ei3 ,,lyons1 op4 cit4 pp4 #ecg-edj4 ,footnote #fj3 ,op4 cit4 7,dcouvertes ,gologiques ,rcentes1 etc47 pp4 #hee-hef4 ,footnote #fa3 ,we except1 of course1 the very local areas where a ,carboniferous fauna has been detected4 ,footnote #fb3 ,compare1 op4 cit4 ,the ,cretaceous ,region of ,abu ,roash1 etc4 ,footnote #fc3 ,or1 as suggested above1 these folds may have been produced in later times1 i4e41 ,pliocene1 when important earth-movements were known to have taken place in ,n4,e4 ,africa and ,s4,w4 ,asia4 ,,chapter ,,vi4 99 99 99 99 99 ,,antiquities4 ,the archological remains of ,baharia ,oasis admit of a classification1 based on their ages1 into the following three groups3-- 7a7 ,egyptian1 consisting principally of a stela of the #ahth1 a tomb of the #aith1 and temples of the #bfth ,dynasty4 7b7 ,roman1 including the ruins of an arch and various other structures2 also the subterranean aqueducts still in use for conveying water from springs to the cultivated land4 7c7 ,coptic1 embracing the ruins of several villages and a church4 ,as the literature concerning these is mostly fragmentary and scattered1 it may be well to describe briefly the various remains1 following the above classification4 7a7 ,,egyptian ,,antiquities4 ,the oldest inscription yet found in ,baharia is that on a stela of the time of ,thothmes ,,ii1 which was discovered by ,ascherson in #ahgf to the west of ,bawitti4 ,this stela is of historical importance1 as being not only the oldest of all antiquities from the oases1 but also older than any inscription bearing reference to the oases1 and as proving that even at the beginning of the ,new ,empire the ,egyptians had taken possession of the oases and erected temples to their gods therein4 ,ascherson was also the first to record the existence of the ruins of an ,egyptian temple in the oasis4 ,this structure is marked on his map#fd as existing some #b kilometres north-west of ,el ,qasr2 he appears1 however1 to have noted no inscription on the walls 7the only parts remaining7 and his brief references to it in his memoir do not give any data as to its age4 ,in his recent visit 7#aijj7 to ,baharia1 ,steindorff#fe discovered the remains of two ,egyptian temples4 ,the first of these exists under modern dwellings in the middle of the village of ,el ,qasr1 in a farm belonging to the ,omda4 ,it contains at present only one room1 with no inscriptions except on the roof1 whence1 however1 we learn that the building was erected during the reign of ,king ,apries 7,b4,c4 #ehh-egj7 to 8,ammon-,re1 the ,lord of the ,oasis1 who dwells in ,desdest10 by a certain ,weh-eb-,re-nofr and one ,ded-,khens-ef-,onkh4 ,the second temple found by ,steindorff1 erected by the same 8,prince and ,ruler of the ,oasis0 ,ded-,khens-ef-,onkh1 lies about #b kilometres south-west of ,el ,qasr4 ,it was erected in the reign of ,amasis 7,b4,c4 #efi-ebf7 and is therefore of somewhat later date than the foregoing4 ,the large room1 excavated from sand by ,steindorff1 has its walls ornamented with representations of ,egyptian deities1 the colours of which are admirably preserved4 ,it is curious to note that at least one1 and perhaps both1 of the temples discovered by ,steindorff had been previously visited by ,ascherson in #ahgf4 ,this observer mentions 7op4 cit4 p4 #adj7 8a well preserved underground chamber which serves as a dwelling for the servants of the ,omda1 which may be of ,egyptian origin4 ,on the roof of this chamber 7which is #gbe metres long1 #bdj metres broad1 and #bij metres high7 is a line of inscription10 which latter he was unable to read owing to the darkness4 ,there can be no doubt of the identity of this place with the first of the temples described by ,steindorff4 ,further on in his memoir 7p4 #adb7 ,ascherson also mentions a ruin called 8,qasr ,megasba1 a sandstone structure having its sides oriented to the four cardinal points1 #he metres long1 #fi metres broad1 with a small entrance-hall to the south and a large room which can only be entered through the smaller one40 ,he relates that the door-way is walled up with crude brick1 and does not say whether he entered the building or not1 so that it is not certain whether this place is identical with ,steindorff's second temple4 ,the distance of the ruin from ,el ,qasr1 as shown on ,ascherson's map1 is about #d kilometres1 i4e41 double that mentioned by ,steindorff1 but otherwise the nature of the building is strongly suggestive of an identity4 ,in his exploration of the large ,necropolis east of ,el ,qasr and ,bawitti1 ,steindorff records the finding of a tomb of the ,new ,empire1 dating from the beginning of the #aith ,dynasty 7,b4,c4 #acjj74 ,on clearing out this tomb1 extremely interesting decorations were found on its walls4 ,the tomb consists of several chambers hewn in the rock1 only two of which are decorated with reliefs1 and belonged to a certain ,amenhotep1 prince of the ,northern ,oasis and of the ,oasis ,huye4 ,the explorer records that on one of the walls of the first chamber ,amenhotep is represented sitting by his wife1 his people bringing to him all kinds of drinks and food1 including fish2 on another wall he is seen superintending the manufacture of wine1 while on a third is a lively representation of the funeral of the deceased4 ,the pictures on the walls of the second room are of similar kind1 but of a more religious character4 ,steindorff remarks that this is the first important tomb of ,egyptian age to be found in the oases of the ,libyan ,desert4 ,it appears to have been used later on for other interments1 as several clay mummy-shaped coffins were found2 from these the mummies had disappeared1 but a few relics such as scarabei1 a gold earring1 a bronze mirror1 etc41 were found4 ,to the ,egyptian period also belongs a limestone statue of the same ,ded-,khens-ef-,onkh who erected the two temples of the #bfth ,dynasty already mentioned2 ,steindorff found this in one of the houses at ,el ,qasr4 ,a sandstone ruin situate #b kilometres due west of ,zubbo1 mapped but not examined by the ,survey1 would appear to be that of another small ,egyptian temple4 ,it is marked on ,cailliaud's map as 8dbris de ,temple10 but is not mentioned in his description4 ,yet a fifth temple in ,baharia would seem to be represented by the ruin 8,qasr ,mayesra10 #b kilometres north-west of ,mandisha1 visited by ,ascherson4 ,this ruin1 which is also mentioned by ,belzoni1 ,cailliaud1 and ,wilkinson1 is a small structure of sandstone #gia metres long1 #fbd metres broad1 having only one room 7entered from the north71 and oriented to the cardinal points4 ,the stones of this ruin have ,greek letters and other signs cut in them1 possibly mason's marks2 they are so striking as to have been seen from a distance through a telescope by ,belzoni4 ,the rock-tombs south-east of ,mandisha1 mentioned by ,ascherson 7l4c4 p4 #ade71 may possibly be further remains of the ,egyptian epoch1 and the same is the case with some rock-chambers found by the ,survey in the south part of the oasis1 some #c kilometres south of ,ain el ,haiss4 ,the latter are excavated in an isolated rock-mass 7sandstone7 some #bj metres in diameter and #f metres high4 ,the chief entrance is on the south-east side of the rock1 by what looks from a short distance like a mere crack2 this entrance leads into a series of four small low chambers 7each about #c metres square71 with a deeper channel running along the centre4 ,other similar chambers are found entering from the north side4 ,no inscriptions appear to exist except a few ,arabic scratches near the principal entrance1 and the chambers were empty4 7b7 ,,roman ,,antiquities4 ,the ,roman structures in the oasis differ generally from those of the ,egyptian era in being built of crude brick instead of stone4 ,they show1 however1 a great solidity of construction2 for this reason these erections of the ,romans have in many cases outlasted those of the ,coptic period which were built long afterwards2 in ,baharia the old ,roman underground aqueducts still serve for the conveyance of water from the springs to the irrigated tracts1 and the present inhabitants are far too indolent to construct similar channels for themselves4 ,according to ,ascherson 7l4c4 p4 #adj7 the village of ,el ,qasr owes its name to a ,roman castle1 abundant remains of which still exist under the modern houses4 ,the most important of the ,roman ruins of ,baharia was however until recently an arch situated close to the north of ,el ,qasr4 ,cailliaud 7l4c4 p4 #ahc7 describes the structure 7as seen in #ahbj7 as consisting of an 8arc de triomphe0 standing on an embankment #ci metres long1 with a dressed stone revetment2#ff this embankment rises #aj metres from the ground-level at the north side1 and is level with the soil of the village to the south4 ,the principal faade is to the north4 ,the courses of the masonry are #bg to #cj centimetres high1 and show a peculiar construction1 headers and stretchers being built in alternate courses4 ,the wall1 which was about #bc metres thick1 and built with a strongly-marked batter1 had an ornamental cornice all round2 above this came a sort of parapet #ij centimetres high4 ,the substance of the embankment is a kind of concrete of irregularly-shaped stones set in cement4 ,the arch itself rises from the embankment in the middle of the north faade1 and is of the ,doric order1 its length being #gdh metres4 ,at the time of ,cailliaud's visit only the central arcade was still standing2 from it one could descend by a flight of steps on to the lower ground4 ,the faade was ornamented with pilasters1 and on each side of the arch was a niche decorated with small columns4 ,in one of the main pillars ,cailliaud saw a spiral staircase leading to a terrace on the top of the arch4 ,the stones are frequently marked with ,greek letters1 doubtless to guide the builders2 no hieroglyphs or other evidences of the ,ancient ,egyptians could be seen in the ruins4 ,this interesting ruin was found in a far less perfect state of preservation on the visit of ,ascherson in #ahgf1 the revetment-wall having mostly disappeared1 possibly owing to an earthquake which is said to have taken place in the oasis about #ahdj4 ,the latest traveller to visit the ruins 7,steindorff1 #aijj7 found that the whole structure had fallen4#fg ,the ruin known as ,qasr ,alam1 situated about #b kilometres west of ,bawitti1 visited by ,wilkinson and by ,ascherson1 is a rectangular crude-brick structure on a slight eminence4 ,only the lower parts of the walls remain1 and ,wilkinson speaks of it as 8an insignificant crude-brick ruin40 ,ascherson obtained a bronze hawk 7now in the ,berlin museum7 found in this place4 ,wilkinson mentions another ruin1 similar to the above1 #a kilometre south-west of ,el ,qasr2 this does not appear to have been since noted4 ,there is no evidence to show the date of either of these structures4 ,a nearly square building with battered walls and a fortified appearance1 situated among the ruins of the ,coptic village some #d kilometres ,e4,s4,e4 from ,mandisha may possibly be a ,roman fort4 ,cailliaud gives its size as #adg metres long1 #ab metres wide1 with walls #h metres in height1 the single door being to the east4 ,the interior is full of debris1 so that the arrangement cannot be well seen4 ,the same doubt as to age occurs concerning some underground chambers at ,el ,qasr1 in one of which ,virchow#fh found an urn1 and similar structures at ,bawitti mentioned by ,ascherson4 ,there is less uncertainty concerning a large crude-brick ruin in the south-east part of the oasis1 some #f kilometres ,e4,s4,e4 of ,ain el ,haiss4 ,this ruin1 mentioned by ,belzoni 7l4c41 p4 #dbg71 ,cailliaud 7l4c41 p4 #aid1 and ,pl4 ,,xxxvi1 fig4 #a71 and ,wilkinson 7l4c41 p4 #cfa71 stands conspicuous on an eminence2 it is of considerable size1 its length being over #hg metres1 and the walls being #f metres high4 ,in the interior is the debris of dwellings4 ,it appears to have been a ,roman castle4 ,belzoni and ,cailliaud mention also a square building with small chambers1 with a square pit cut in the rock in the centre2 this lies about #a kilometre ,s4,s4,w4 from the castle1 and is regarded by these discoverers as an ancient bath4 ,to the ,roman period may possibly belong a large crude-brick rectangular enclosure close to ,ain el ,haiss4 ,this building is #ge paces square1 with a main door on the west side1 and has walls about #b metres in height4 ,the brickwork is peculiar1 a course of stretchers three bricks deep being followed by two courses of headers set on edge1 with one or two rows of bricks in a perpendicular position down the centre2 the walls are #ej centimetres thick4 ,the interior of the place is a large court1 with numerous small rooms at the north and south sides and two others on the west4 ,the rooms are used at the present day by the men of ,bawitti when they come to gather the rice-crop at ,ain el ,haiss4 ,it is not a little remarkable that no reference to this large structure is to be found in ,cailliaud's account2 its position 7some #cjj metres only south-west of the sheikh's tomb at ,ain el ,haiss7 would seem to preclude the possibility of confusing it with the other ruins he describes4 ,he gives however 7l4c4 p4 #aie7 the latitude of ,el ,haiss as #bh #j #cb1fi 8latitude du couvent chrtien10 from which it would appear likely that he considered this place a convent4 ,there is no evidence to decide whether the building is of ,roman or ,coptic origin4 ,far more enduring and more important 7in a modern sense7 than any of their buildings1 were the extensive excavations carried out by the ,romans for the improvement of the water-supply of oasis4 ,in the neighbourhood of ,bawitti especially1 long series of shafts sunk in the sandstones and clays which form the ground1 are frequently to be seen4 ,these shafts1 which vary from #a to #c metres in diameter1 are sometimes round1 sometimes rectangular1 and are placed at only short distances apart4 ,they are connected below with long tunnels1 along which flows the water from the springs4 ,cailliaud mentions the existence of ten of these ancient aqueducts near ,mandisha1 eight of which still conveyed water in #ahbj2 he entered one and followed it for #dj metres4 ,he counted no less than fourteen shafts connected with this tunnel in a length of #aej metres1 and records that one measured had a rectangular shape1 #ade metres by #jde metres1 and was perfectly cut in the rock1 with footholds for the descent of the workmen4 ,the largest aqueduct found by ,cailliaud is south-west of ,el ,qasr2 its size is such that a man is able to walk in it4 ,this tunnel1 which now contains no water1 leads from an excavation #e metres in diameter by #h metres deep1 and in a length of #ee metres it is entered by ten shafts4 ,in the same neighbourhood ,cailliaud counted more than thirty other aqueducts1 mostly coming from the south1 like those of ,mandisha4 ,four of these discharge their water into a huge excavation #gj metres diameter and #ab metres deep4 ,the only example of an underground aqueduct at present known to exist in the south part of the oasis is one discovered by ,ascherson a few kilometres east of ,ain el ,haiss2 it is at present dry4 ,though more abundant in ,baharia than in any other of the ,egyptian oases1 doubtless on account of the relatively shallow depths at which water is there reached1 these ,roman levels are not peculiar to ,baharia1 several existing in ,farafra1#gj one of which was noticed by ,ascherson 7l4c4 p4 #acg72 other examples have been found at ,ain ,um ,dababib and near ,gennah in ,kharga4#ga ,it appears1 too1 that underground aqueducts of the same nature exist abundantly in the oases of the ,algerian and ,moorish ,sahara4 7c7 ,,coptic ,,antiquities4 ,some #d kilometres ,e4,s4,e4 from ,mandisha are the ruins of a ,coptic#gb village1 which appear to be those described and figured by ,cailliaud1 although he gives the position as 8est #ce nord de ,zabou0 ,cailliaud characterises these remains as 8miserable ruins10 but mentions specially1 besides the fort referred to1 two ruined churches1 larger than the other structures4 ,the first of these is #aaa metres long1 #fej metres wide1 and has walls still #f metres high2 a principal door opens to the south1 while another smaller door is situated on the north side4 ,the interior presents only one room1 with a niche in the wall2 there are three windows on each of the two longer sides4 ,the second ruin is of about the same size2 on each of its longer sides are nine niches in the wall1 and higher up are six small openings for light4 ,the building appears to have been vaulted4 ,the ancient habitations which form the remainder of the ruins are of a uniform type--low vaulted dwellings surmounted by terraces1 access to which is got by steps4 ,the entire village has a circumference of about #ebj metres4 ,the name of the locality where these ruins exist is not without interest4 ,ascherson quotes it as 8,denise10 while ,wilkinson gives 8,bayrees20 the name1 like that of ,beris in ,kharga ,oasis1 doubtless comes from the old ,egyptian root 8rs0 7the south74 ,another ,coptic village existed in the south-east part of the oasis1 in a district now called ,uxor1 some #aj kilometres east of ,ain el ,haiss4 ,the principal ruin is that of a church1 built of crude brick1 #aih metres in length4#gc ,the exterior displays only four bare walls1 battered1 with two doors in the east part opening respectively north and south4 ,in the interior is a nave1 and on each side are three arcades forming small chapels2 in the centre is a niche ornamented with small columns with volute capitals4 ,above the chapels a gallery runs round the building4 ,the columns of the nave have capitals rudely modelled on the plan of the lotus-flower of the ancient ,egyptians4 ,the remains of fresco paintings can still be traced on the walls1 with ,greek crosses and fragments of inscriptions4 ,ascherson records that he visited this ruin in #ahgf and found it in about the same state as ,cailliaud narrates1 though he was unable to discover the inscriptions on the walls which that author and ,wilkinson refer to4 ,besides the two above-mentioned1 a third ,coptic village seems to have existed about #g kilometres south-west of ,mandisha1 at the south end of the range of hills which will be seen on the map4 ,this village has not been seen1 apparently1 by any ,european traveller1 though its position was pointed out to ,ascherson from a distance1 under the name 8,merharet-el-,fama40 ,information was derived on a visit to ,ain ,jafarra 7#f kilometres south of ,mandisha7 that some ruins existed a short distance to the north-west1 and this would appear to coincide with the position given by ,ascherson2 time unfortunately failed for an excursion in search of them4 99 99 99 99 99 ,footnote #fd3 ,zeitschrift der ,gesellschaft fr ,erdkunde zu ,berlin1 ,band #bj1 #ahhe1 pp4 #aaj-afj4 ,footnote #fe3 ,berichte der philologisch-historischen klasse der ,konigl4 ,sachs4 ,gesellschaft der ,wissenschaften zu ,leipzig1 #aijj1 pp4 #bji-bci4 ,footnote #ff3 ,belzoni1 as remarked on p4 #h4 mistook this revetment-wall for that of a temple of ,jupiter ,ammon1 and the builder's stone-marks for the remains of a ,greek inscription4 ,footnote #fg3 ,op4 cit4 p4 #bbf4 ,footnote #fh3 8,gesichtsurne aus der kleinen ,oase02 ,sitzungsber4 der ,berliner anthropol4 ,gesellschaft1 #ahgf1 pp4 #aga1 #agb 7with woodcut74 ,footnote #fi3 ,the ,survey observations give #bh #b #aa ,n4 as the latitude of ,ain el ,haiss1 thus placing it about #c kilometres further north4 ,jordan's value1 #bh #a #ee substantially confirms this2 the small difference is doubtless due to different points of observation being used4 ,footnote #gj3 ,op4 cit4 ,farafra ,oasis1 etc41 p4 #ab4 ,footnote #ga3 ,kharga ,oasis1 etc41 p4 #hb4 ,footnote #gb3 ,op4 cit4 p4 #adi4 ,pl4 ,,xxxviii4 ,footnote #gc3 ,op4 cit4 p4 #aic and ,pl4 ,,xxxvi1 ,fig4 #b4 ,,index4 99 99 99 99 99 ,abu ,moharik dunes1 #bj1 #be1 #ce1 #cf2 see also ,dunes4 ,abu ,roash1 #af1 #fd1 #gj4 ,abu ,zabel1 #fc1 #fd4 ,administration of ,oasis1 #h4 ,ain ,auena1 #db4 ,bayum1 #db4 ,beled1 #df4 el ,gidr1 #bj4 el ,haiss1 #ab1 #ad1 #ch1 #ci1 #dj1 #da1 #dd1 #de1 #df1 #ea1 #ef1 #eh1 #ei1 #fe1 #ff1 #fg1 #gj1 #ge1 #gg1 #gh4 el ,wadi1 #cd4 ,gelid1 #be1 #bf1 #cf1 #ch1 #da1 #df4 ,hassab1 #de4 ,haswi1 #da1 #df4 ,jafarra1 #dd1 #de4 ,khaman1 #df4 ,murun1 #db4 ,rayan1 see ,rayan4 ,sini1 #db4 ,um ,dababib1 #gi4 ,alexandria1 #ag1 #ci4 ,altitudes1 #ac1 #ad1 #bd1 #be1 #bi1 #cd4 ,amenhotep1 northern oasis of1 #h4 ,andesite1 see ,igneous rocks4 ,animals1 #ae1 #ah4 ,antiquities1 see ,archology4 ,aqueducts1 #h1 #ae1 #db1 #gh4 ,aradj1 #ce4 ,archology1 #g1 #h1 #i1 #ae1 #gc-hj4 ,area of depression1 #cg1 #db4 ,ascherson1 #e1 #g1 #i1 #ad1 #ae1 #af1 #ag1 #ai1 #cd1 #ce1 #cf1 #db1 #de1 #df1 #dg1 #ea1 #fc1 #gc1 #gd1 #ge1 #gf1 #gg1 #gi1 #hj4 ,assiut1 #aa1 #cf4 ,assuan1 #bf4 ,bahnessa1 #ag1 #bb1 #ce1 #fd4 ,bahr bela ma1 see ,el ,bahr4 ,bahr ,yusuf1 #ce4 ,ball1 ,j41 #ag4 ,barron1 ,t41 #ed4 ,barytes1 #di4 ,basalt1 see ,dolerite4 ,base-line measurement1 #ab4 ,bawitti1 ,el1 #aa1 #ad1 #ae1 #bj1 #ci1 #db1 #de1 #df1 #di1 #ec1 #eh1 #gd1 #gg1 #gh4 ,bayrees1 #gi4 ,beadnell1 ,h4 ,j4 ,l41 #af1 #ag1 #ai1 #cd1 #dg1 #dh1 #ed1 #fh4 ,belzoni1 #h1 #ce1 #ge1 #gf4 ,beniadi1 #cf4 ,beni ,suef1 #h4 ,beris1 #gi4 ,bilbeis1 #fc4 ,blanckenhorn1 ,m41 #bc1 #eb1 #ei4 ,blown sand1 see ,dunes4 ,bone-beds1 #ed4 ,boring wells1 #dc4 ,botany1 #i1 #ae1 #ah1 #dc4 ,bounding escarpments1 #ch1 #dj4 ,bullen ,newton1 ,r41 #dg1 #eb4 ,cailliaud1 #h1 #aa1 #ab1 #ac1 #ae1 #af1 #ag1 #cc1 #de1 #fc1 #ge1 #gf1 #gg1 #gh1 #gi1 #hj4 ,cenomanian deposits1 #af1 #dh1 #di-ee1 #eh1 #ei1 #fb1 #fc1 #fd1 #ff4 ,chapman1 ,f41 #eh1 #ei4 ,coptic remains1 #h1 #df1 #eh1 #gf1 #gg1 #gh1 #gi4 ,cretaceous deposits1 #i1 #aj1 #cb1 #cc1 #dg1 #dh1 #di-eg1 #eh4 ,crops1 #dd1 #de4 ,cultivation1 #bj1 #cg1 #db1 #dd1 #de1 #df1 #fe4 ,dakhla1 ,oasis1 #g1 #h1 #i1 #cg1 #db1 #dc1 #dd1 #ed1 #eg1 #fh1 #fi1 #gj4 ,danian deposits1 #af1 #dh1 #ee-eg1 #ei4 ,dates1 #db1 #dc1 see also ,palms4 ,declination of compass1 #ac4 ,decrease in cultivated land water-supply1 #dd4 ,delga1 #ag1 #cf4 ,denise1 #gi4 ,der el ,maragh1 #cf4 ,distribution of water1 #dc4 ,dolerite1 see ,igneous rocks4 ,drift sand1 see ,dunes4 ,dunes1 #ag1 #ah1 #ai1 #bj1 #bd1 #be1 #bf1 #bh1 #cj1 #cb1 #ce1 #cf1 #da1 #db1 #df1 #dh1 #fe4 ,earliest explorers of oasis1 #h1 #i4 ,eastern ,desert1 #af1 #ed1 #ee4 ,egyptian remains1 #i1 #gb-gd4 ,el ,ayun1 #db4 ,el ,bahr1 #ah1 #ai1 #bb1 #bc1 #ce4 ,el ,beled1 #df4 ,el ,gharb1 #de4 ,el ,haiss1 see ,ain el ,haiss4 ,el ,qasr1 #h1 #bj1 #cd1 #ci1 #dj1 #da1 #db1 #ej1 #fh1 #gb1 #gc1 #gd1 #ge4 ,el ,wadi1 see ,ain el ,wadi4 ,eocene deposits1 #ba-bd1 #bf-ch1 #dg1 #dh1 #di1 #ej1 #eh-fa1 #fh1 #fi4 ,excavation of oasis1 #af1 #gb4 ,exports1 #db1 #dc1 #dd4 ,farafra ,oasis1 #g1 #h1 #i1 #aa1 #af1 #ag1 #bi1 #cc1 #cd1 #cg1 #dj1 #dc1 #de1 #df1 #dh1 #ef1 #eg1 #fh1 #fi4 ,faults1 #ba1 #eh4 ,fayum1 #i1 #aj1 #ae1 #ag1 #ba1 #bb1 #bc1 #cd1 #ce1 #cf1 #fb1 #fd4 ,ferns1 #ae4 ,feshn1 #ag1 #ch4 ,floor of oasis1 #da-df4 ,folding1 see ,tectonics4 ,formation of depression1 #af1 #gb4 ,fruit1 #dc1 #dd4 ,gar el ,hamra1 #bj1 #bc1 #fb4 ,gar ,marzak1 see ,jebel ,gar ,marzak4 ,gennah1 #gi4 ,geographical determinations of villages1 etc41 #aa-ac4 ,geology1 special description1 #dg-gb4 ,geological summary1 #af1 #dh1 #fi-gb4 ,geology1 ,farafra road1 #cc-cd1 ,feshn and ,maghagha road1 #ba-bd1 ,minia road1 #bf-cc4 ,gharag1 #ce4 ,ghard el ,shubbab dunes1 #ai4 ,girga1 #bf4 ,gorringe1 ,l41 #e1 #ed4 ,gypsum1 #ba1 #di4 ,harra village1 #da1 #db1 #dd1 #de1 #df1 #ec1 #ei1 #fg4 ,health statistics1 #dd4 ,heights1 see ,altitudes4 ,hills within depression1 #dj1 #da4 ,history of oasis1 #g1 #h4 ,hot springs1 #h1 #dc1 #de4 ,hume1 ,w4 ,f41 #ed4 ,huye ,oasis1 #h1 #gd4 ,hyde1 #h4 ,igneous rocks1 #ac1 #af1 #ba1 #bb1 #dj1 #dh1 #di1 #ej1 #fc1 #fd4 ,inhabitants1 #de1 see ,population4 ,ironstone1 #bi1 #ea1 #fa1 #fb1 #fc1 #fh1 #gb4 ,jebel ,ahmar1 #bb1 #fb4 el ,ghudda1 #ah1 #bb1 #fb4 el ,hefhuf1 #dj1 #ec1 #ef1 #eh1 #fc1 #ff4 ,gar ,marzak1 #ai4 ,horabi1 #bj1 #ch1 #ci1 #dj1 #ea1 #fb4 ,mandisha1 #dj1 #db1 #fc1 #fd4 ,mayesra1 #bj1 #dj1 #fc4 ,morabi1 see ,horabi4 ,muailla1 #ag1 #ba4 ,jordan1 #i1 #aa1 #ab1 #ac1 #ad1 #ae1 #bi1 #cc1 #cd1 #da4 ,jupiter ,ammon temple1 #h4 ,kharafish1 #ai4 ,kharga ,oasis1 #g1 #h1 #af1 #cb1 #cg1 #db1 #dc1 #dd1 #eg1 #fh1 #gi4 ,latitude determinations1 #aa1 #ab1 #ac4 ,letorzec1 #h4 ,limonite1 see ,ironstone4 ,longitude determinations1 #aa1 #ab1 #ac4 ,lucas1 ,a41 #fc4 ,lyons1 ,capt4 ,h4 ,g41 #i1 #ac1 #dg1 #eb1 #fj1 #fh4 ,maghagha1 #e1 #aa1 #ab1 #ag1 #bf1 #bi1 #cc1 #eh1 #fd1 #gb4 ,magnetic ,meridian1 #ac4 ,magnetite1 #ac4 ,mandisha1 #ac1 #bj1 #bf1 #dj1 #da1 #dd1 #di1 #ej1 #fe1 #ge1 #gh1 #gi1 #hj4 ,mandisha ,aguza1 #dd1 #de4 ,mangatin1 #ce4 ,mayer ,eymar1 #fd4 ,measurement of water1 #dc4 ,medinet el ,fayum1 #ce4 ,merharet el ,fama1 #hj4 ,mima1 #aa1 #ab1 #ad1 #ag1 #bd1 #cb1 #cf1 #ch1 #fj4 ,mogara1 #ag1 #bj1 #ci4 ,muailla1 see ,jebel ,muailla4 ,muller1 #i4 ,nasl ,nadiub ,lengat1 #bd1 #be1 #bi1 #cb4 ,oligocene deposits1 #ba1 #bb1 #dh1 #fa1 #fd2 see also ,post ,eocene deposits4 ,origin of depression1 #af1 #gb4 ,pacho1 #i1 #ce4 ,pacho ,mt41 #ce4 ,palms1 #bj1 #cg1 #db1 #dc1 #de4 ,pleistocene deposits1 #ba1 #fe4 ,population1 #db1 #dd1 #de4 ,position of oasis1 #g1 of ,ain el ,hais1 #ab1 #gh1 of ,zubbo1 #aa1 of south end of depression1 #ac1 #bi4 ,post ,eocene deposits1 #af1 #bd1 #bf1 #bh1 #cb1 #dh1 #di1 #ea1 #fa1 #fg4 ,public health1 #dd4 ,qasr el ,lamlum ,bey1 #ag1 #bj4 ,qasr ,mayesra1 #ge4 ,qasr ,megasba1 #gd4 ,rayan1 #ag1 #bb1 #be1 #ce4 ,recent deposits1 #ag-cf1 #fe4 ,roads1 #ag1 #cf2 ,bahnessa road1 #ce2 ,farafra road1 #cc-cd2 ,fayum road1 #cd-ce1 #cf2 ,feshn and ,maghagha road1 #ag-ba2 ,minia road1 #bd-cc2 ,siwa road1 #cd1 #ci4 ,rohlfs ,expedition1 #i1 #cd1 #ce1 #dg4 ,roman remains1 #h1 #ae1 #db1 #dc1 #gf-gi4 ,rubi1 #ce4 ,salines1 #cg1 #da1 #dh1 #fe4 ,samalut1 #i1 #ag1 #ce1 #cf1 #df4 ,sand dunes1 see ,dunes4 ,sand erosion1 #ai1 #bc1 #gb4 ,schweinfurth1 #i1 #ai4 ,senonian deposits1 #dh1 #ee1 #ga4 ,serir1 #ah1 #ai4 ,silicified wood1 #bb1 #eb1 #ed4 ,sittra1 #i1 #ce4 ,siwa ,oasis1 #h1 #aj1 #ag1 #cd1 #ci1 #dd4 ,springs1 #cg1 #db1 #df1 #fe1 see also ,ain1 and ,water-supply4 ,statistics1 #ae1 #db1 #dc1 #dd4 ,steindorff1 #g1 #h1 #i1 #aj1 #gc1 #gd1 #ge1 #gg4 ,surveying operations1 #e1 #aa-af1 #ag4 ,tablemun1 #df4 ,tamarisk1 #da4 ,taxation1 #dc4 ,tectonics1 #af1 #dh1 #ec1 #eg1 #fa1 #fe-fi4 ,temperature of wells1 #dc1 #de1 see ,hot springs4 ,topography1 #cg-df4 ,tripoli1 #fc4 ,turonian deposits1 #dh1 #ee4 ,unconformity between ,eocene and ,cretaceous1 #af1 #dh1 #eg1 #fj1 #fa4 ,underground aqueducts1 see ,aqueducts4 ,uttiah1 #ce4 ,uxor1 #gi4 ,villages1 #cg1 #db1 #dd1 #de4 ,virchow1 #gg4 ,volcanic rocks1 see ,igneous rocks4 ,vuta1 ,g41 #e4 ,wadi ,araba1 #ga4 ,muailla1 #ag1 #bj4 ,rayan1 see ,rayan4 ,water-supply1 #ae1 #db1 #dc1 #dd1 #de1 #df1 #gb4 ,wells1 #db1 #dc1 #de1 #df1 see also ,water supply and ,ains4 ,wilkinson1 #i1 #ge1 #gg1 #gi1 #hj4 ,wind erosion1 see ,sand erosion4 ,zirkel1 #fc4 ,zittel1 #i1 #ai1 #cd1 #dg1 #dh1 #di1 #eg1 #fj1 #fc4 ,zoology1 #ae1 #ah4 ,zubbo1 #aa1 #ab1 #ac1 #bj1 #bd1 #bf1 #da1 #db1 #dg1 #ge1 #gi4 99 99 99 99 99 ,illustration3 ,,baharia ,,oasis ,,plate ,i4 ,illustration3 ,,sketch ,,map ,,of ,,egypt ,showing the ,positions of the ,,western ,,oases ,,plate ,,ii4 ,illustration3 ,,plate ,,iii4 ,,baharia ,,oasis ,,map ,,of ,,the ,,villages ,,and ,,principal ,,sources ,,of ,,water ,,in ,,the ,,northern ,,part ,,of ,,the ,,oasis4 ,illustration3 ,,plate ,,iv4 ,,baharia ,,oasis ,,section ,,through ,,western ,,escarpment #aa ,,kilom4 ,n4 ,,of ,,south ,,end ,,of ,,depression ,illustration3 ,,plate ,v4 ,,baharia ,,oasis ,,diagrammatic ,,section ,,from ,,hill #ae ,,kilometres ,,north-,,east ,,of ,,ain ,,el ,,haiss ,,to ,,eocene-,,cretaceous ,,junction ,,on ,,desert ,,to ,,west ,illustration3 ,,plate ,,vi4 ,,baharia ,,oasis ,section from ,,mandisha through ,,jebel ,,mayesra and ,conical ,hill to ,,western ,,plateau4 ,illustration3 ,,plate ,,vii4 ,,baharia ,,oasis ,,map ,,of ,,the ,,synclinal ,,fold ,,from ,,jebel ,,hefhuf ,,to ,,its ,,termination ,illustration3 ,,baharia ,,oasis4 ,,sketch ,,of ,,geological ,,sections ,,of ,,east ,,scarp4 ,,plate ,,viii4 ,transcriber's note3 ,pg4 #h 7footnotes #a and #c7 ,changed3 ,mre to3 ,mro ,pg4 #ai 7footnote #bj7 ,changed3 ,gesellchaft fr ,erdkunde to3 ,gesellschaft ,pg4 #ba ,changed3 ,lower ,mokattam leds to3 beds ,pg4 #cc 7footnote #bg7 ,changed3 ,physiche geographie to3 ,physische ,pg4 #ce ,changed3 about #aej kilometres to3 #cej ,pg4 #dd ,changed3 camels and raders to3 traders ,pg4 #ea ,changed3 ,neolobolites to3 ,neolobites ,pg4 #eb ,changed3 ,neobolites to3 ,neolobites ,pg4 #eh ,changed3 ,textularia8 granien to3 gramen ,pg4 #gg ,changed3 ruin kown as to3 known ,pg4 #gh ,changed3 undergroud aqueduct to3 underground ,minor changes in punctuation have been done silently4