﻿14 
  PKOCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [Nov. 
  4, 
  

  

  The 
  flat 
  on 
  the 
  right 
  bank 
  at 
  Dakke 
  (172 
  miles 
  north 
  of 
  Wadi 
  

   Half 
  eh) 
  was 
  fonnd 
  to 
  be 
  not 
  quite 
  100 
  feet 
  above 
  the 
  level 
  of 
  the 
  

   river 
  ; 
  and, 
  as 
  usual, 
  it 
  was 
  covered 
  with 
  the 
  same 
  soil 
  and 
  loose 
  stones 
  

   noticed 
  at 
  Derr, 
  Korosko, 
  and 
  the 
  last-named 
  localitj 
  T 
  . 
  I 
  traced 
  

   the 
  Cyrena 
  flwminalis* 
  among 
  the 
  natron-soil 
  for 
  upwards 
  of 
  a 
  mile 
  

   inwards, 
  and 
  the 
  Bulimus 
  for 
  another 
  half-mile 
  to 
  several 
  hills, 
  and 
  

   to 
  a 
  desert 
  plain 
  which 
  was 
  covered 
  with 
  drifted 
  sand. 
  No 
  trace 
  of 
  

   Shells 
  could 
  be 
  met 
  with 
  at 
  corresponding 
  heights 
  on 
  the 
  left 
  bank. 
  The 
  

   alluvium 
  extends 
  from 
  the 
  river 
  for 
  a 
  long 
  way 
  beyond 
  the 
  Temple 
  

   of 
  Dakke, 
  which, 
  like 
  that 
  at 
  Maharraka, 
  is 
  built 
  upon 
  it. 
  I 
  may 
  

   here 
  remark 
  that 
  neither 
  the 
  banks 
  of 
  alluvium 
  now 
  forming 
  nor 
  

   these 
  more 
  ancient 
  accumulations 
  seem 
  to 
  contain 
  many 
  Shells 
  ; 
  it 
  

   is 
  only 
  on 
  ancient 
  bottoms, 
  where 
  the 
  currents 
  were 
  not 
  strong, 
  and 
  

   depositing 
  much, 
  that 
  these 
  remains 
  appear 
  most 
  abundant. 
  The 
  

   great 
  alluvial 
  heaps 
  seem 
  to 
  have 
  been 
  deposited 
  by 
  rapid 
  cur- 
  

   rents, 
  which 
  may 
  not 
  have 
  carried 
  Shells 
  along 
  with 
  them. 
  I 
  have 
  

   often 
  been 
  struck 
  with 
  the 
  absence 
  of 
  any 
  traces 
  of 
  animal 
  struc- 
  

   tures 
  in 
  the 
  alluvial 
  banks 
  of 
  the 
  river, 
  which 
  fact 
  I 
  cannot 
  account 
  

   for 
  in 
  any 
  other 
  way. 
  

  

  The 
  above-mentioned 
  high 
  levels 
  were 
  traceable 
  along 
  the 
  slopes 
  

   at 
  broken 
  intervals 
  on 
  to 
  Gertassee. 
  On 
  a 
  plateau 
  behind 
  the 
  vil- 
  

   lage, 
  some 
  60 
  to 
  80 
  feet 
  above 
  high 
  Nile, 
  Cyrena 
  fluminalis, 
  Unio 
  

   lithophagus 
  ?, 
  and 
  Paludina 
  bulimoides 
  f 
  were 
  found 
  in 
  abundance. 
  

  

  The 
  granitic 
  rocks, 
  reappearing 
  about 
  six 
  miles 
  below 
  Gertassee, 
  

   continue 
  on 
  both 
  sides 
  of 
  the 
  river, 
  in 
  the 
  shape 
  of 
  high 
  rugged 
  

   ridges, 
  to 
  Debod, 
  18 
  miles 
  south 
  of 
  Assuan, 
  on 
  the 
  left 
  bank, 
  where 
  

   there 
  is 
  an 
  excavation 
  or 
  bay, 
  from 
  the 
  granite 
  not 
  having 
  protruded 
  

   so 
  high 
  as 
  in 
  other 
  situations 
  ; 
  in 
  consequence 
  of 
  this 
  the 
  sandstone 
  

   overlies 
  the 
  latter. 
  West 
  of 
  the 
  village 
  is 
  observed 
  a 
  terrace-cliff, 
  

   more 
  or 
  less 
  covered 
  with 
  sand 
  and 
  shingle 
  ; 
  it 
  is 
  traceable 
  around 
  

   the 
  basin 
  to 
  where 
  the 
  river 
  narrows 
  again 
  southwards. 
  There, 
  at 
  

   various 
  points, 
  some 
  60 
  to 
  70 
  feet 
  above 
  the 
  river's 
  level, 
  were 
  found 
  

   abundance 
  of 
  the 
  three 
  last-mentioned 
  Shells 
  J. 
  The 
  desert 
  has 
  in- 
  

   truded 
  greatly 
  on 
  the 
  plateaus 
  and 
  alluvial 
  banks 
  ; 
  the 
  latter 
  rise 
  in 
  

   great 
  heaps 
  along 
  the 
  side 
  of 
  the 
  old 
  basin, 
  so 
  that 
  it 
  is 
  now 
  scarcely 
  

   possible 
  to 
  define 
  the 
  limits 
  of 
  either. 
  This 
  is 
  an 
  interesting 
  locality 
  

   for 
  several 
  reasons. 
  There 
  stands 
  the 
  ruined 
  temple, 
  probably 
  at 
  

   least 
  2000 
  years 
  old, 
  on 
  comparatively 
  recent 
  river- 
  deposits, 
  over 
  which 
  

   are 
  strewed 
  the 
  tufaceous 
  nodules 
  so 
  frequently 
  noticed 
  on 
  the 
  sur- 
  

   face 
  of 
  these 
  beds. 
  In 
  these 
  banks 
  the 
  ancient 
  race 
  excavated 
  their 
  

   catacombs 
  and 
  caverns, 
  whose 
  ghastly 
  remains 
  are 
  now 
  spread 
  at 
  the 
  

   entrances, 
  and 
  bleach 
  on 
  their 
  sunny 
  slopes 
  ; 
  whilst 
  a 
  few 
  feet 
  higher 
  

   is 
  the 
  above-mentioned 
  plateau, 
  with 
  its 
  immeasurably 
  more 
  ancient 
  

   memorials 
  spread 
  over 
  or 
  in 
  the 
  now 
  scanty 
  soil, 
  in 
  the 
  hollows 
  and 
  

   the 
  crevices 
  of 
  the 
  granitic 
  rocks. 
  

  

  7. 
  Ravines 
  east 
  of 
  Phila>, 
  with 
  Alluvium 
  and 
  Freshwater 
  Shells.— 
  

   ■ 
  — 
  From 
  Debod 
  the 
  river 
  runs 
  between 
  hills 
  of 
  granitic 
  rocks, 
  having 
  

   high 
  bands 
  of 
  alluvium 
  on 
  each 
  side, 
  to 
  the 
  top 
  of 
  the 
  First 
  Cataract. 
  

  

  * 
  Specimen 
  No. 
  6. 
  t 
  Specimens 
  Nos. 
  7, 
  8, 
  9, 
  

  

  | 
  Specimens 
  Nos. 
  10, 
  11, 
  12, 
  

  

  