﻿BED 
  OP 
  ANGTTLAK 
  DKIET. 
  133 
  

  

  of 
  these 
  blocks 
  have 
  been 
  broken 
  up 
  and 
  removed, 
  they 
  are 
  still 
  

   numerous 
  in 
  and 
  around 
  the 
  villages 
  of 
  Upton, 
  East 
  and 
  West 
  

   Hagbourne, 
  and 
  in 
  other 
  valleys 
  below 
  the 
  line 
  of 
  the 
  chalk 
  escarp- 
  

   ment. 
  

  

  There 
  was 
  an 
  entire 
  absence 
  of 
  the 
  oolitic 
  debris 
  and 
  of 
  the 
  

   quartzite 
  pebbles 
  which 
  formed 
  so 
  large 
  a 
  proportion 
  of 
  the 
  old 
  

   valley- 
  or 
  river-gravels. 
  

  

  To 
  show 
  the 
  relation 
  which 
  this 
  angular 
  drift 
  bears 
  to 
  the 
  sub- 
  

   angular 
  river-valley 
  gravels, 
  I 
  have 
  given 
  a 
  general 
  section 
  of 
  the 
  

   country 
  from 
  Culham 
  Station 
  to 
  the 
  summit 
  of 
  the 
  upper 
  chalk 
  

   escarpment 
  near 
  East 
  Ilsley 
  (fig. 
  2). 
  The 
  independence 
  of 
  the 
  

   two 
  drifts 
  will 
  be 
  apparent 
  from 
  this 
  section. 
  In 
  the 
  Thames 
  valley, 
  

   and 
  at 
  levels 
  of 
  from 
  10 
  to 
  20 
  feet 
  above 
  the 
  river, 
  a 
  large 
  number 
  of 
  

   mammalian 
  remains 
  have 
  been 
  found, 
  including 
  specimens 
  of 
  Ele- 
  

   jphas 
  primigenius, 
  E. 
  antiquus, 
  Hippopotamus 
  major, 
  Rhinoceros 
  

   tichorhinus, 
  Equus 
  fossilis, 
  Bos 
  primigenius, 
  Oervus 
  elaplius, 
  and 
  

   C. 
  capreolus, 
  together 
  with 
  species 
  of 
  freshwater 
  shells 
  of 
  the 
  genera 
  

   Pisidium, 
  Valvata, 
  Ancylus, 
  &c, 
  and, 
  lastly, 
  Cyrena 
  Jluminalis, 
  in 
  

   the 
  old 
  river-gravel. 
  

  

  In 
  the 
  section 
  fig. 
  1, 
  point 
  a' 
  represents 
  a 
  deposit 
  of 
  " 
  rain-wash 
  " 
  

   filling 
  a 
  depression 
  some 
  200 
  feet 
  in 
  length 
  by 
  10 
  feet 
  deep 
  in 
  the 
  

   centre. 
  It 
  is 
  roughly 
  stratified, 
  consists 
  of 
  a 
  brown 
  clay 
  with 
  

   carbonaceous 
  bands, 
  and 
  abounds 
  with 
  well-preserved 
  specimens 
  

   of 
  Cyclostoma 
  elegans 
  and 
  Helix 
  nemoralis. 
  

  

  In 
  conclusion, 
  I 
  have 
  to 
  express 
  my 
  obligation 
  to 
  the 
  resident 
  

   engineer, 
  Thomas 
  Scott, 
  Esq., 
  for 
  the 
  levels 
  and 
  a 
  tracing 
  of 
  the 
  

   cutting. 
  

  

  Discussion. 
  

  

  The 
  Pkesident 
  remarked 
  upon 
  the 
  value 
  of 
  this 
  paper 
  as 
  calling 
  

   attention 
  to 
  a 
  very 
  peculiar 
  form 
  of 
  drift, 
  and 
  inquired 
  if 
  beneath 
  

   the 
  datum-lines 
  of 
  the 
  railway 
  there 
  were 
  indications 
  of 
  a 
  further 
  

   extension 
  of 
  this 
  peculiar 
  drift. 
  The 
  occurrence 
  of 
  mammalian 
  

   bones 
  in 
  so 
  dry 
  a 
  situation 
  was 
  peculiar. 
  

  

  Prof. 
  Htjohes 
  said 
  that 
  he 
  had 
  received 
  a 
  few 
  specimens, 
  chiefly 
  

   of 
  antiquities, 
  from 
  this 
  district, 
  from 
  the 
  Eector 
  of 
  Upton. 
  It 
  

   appeared 
  to 
  him 
  that 
  there 
  was 
  a 
  kind 
  of 
  rainwash, 
  or 
  subaerial 
  

   debris, 
  washed 
  into 
  a 
  hollow 
  at 
  the 
  time 
  when 
  the 
  Mammoth 
  lived, 
  

   and 
  a 
  small 
  pond 
  had 
  at 
  one 
  time 
  been 
  formed 
  in 
  the 
  hollow. 
  One 
  

   point 
  of 
  interest 
  was 
  the 
  relation 
  of 
  this 
  deposit 
  to 
  the 
  more 
  northern 
  

   glacial 
  deposits 
  ; 
  it 
  was 
  remarkable 
  that 
  there 
  were 
  no 
  fragments 
  

   whatever, 
  such 
  as 
  were 
  commonly 
  found 
  in 
  the 
  postglacial 
  drifts 
  

   further 
  north. 
  Did 
  this 
  belong 
  to 
  the 
  period 
  of 
  extreme 
  cold, 
  or 
  of 
  

   heavy 
  flushes 
  of 
  rain-water 
  at 
  a 
  later 
  time 
  ? 
  

  

  Mr. 
  Tiddeman 
  suggested 
  that 
  some 
  other 
  sections 
  of 
  a 
  similar 
  

   character 
  existed, 
  as 
  on 
  the 
  east 
  flank 
  of 
  the 
  Malvern 
  hills, 
  where 
  

   was 
  an 
  angular 
  unworn 
  deposit 
  formed 
  of 
  the 
  debris 
  of 
  the 
  hill, 
  and 
  

   lying 
  at 
  a 
  very 
  low 
  gradient. 
  This, 
  as 
  he 
  was 
  informed 
  by 
  the 
  Rev. 
  

  

  