﻿AND 
  THEIR 
  STRATIGRAPHY. 
  639 
  

  

  shot 
  bed 
  ; 
  and 
  if 
  this 
  is 
  the 
  case, 
  the 
  anticlinal 
  shown 
  in 
  the 
  map 
  will 
  

   he 
  the 
  more 
  pronounced. 
  

  

  The 
  line, 
  Cricket 
  Hill, 
  Hill-Field 
  Farm, 
  Blackwater, 
  where 
  I 
  have 
  

   stopped 
  the 
  Upper 
  Bagshot 
  is 
  an 
  arbitrary 
  one, 
  as 
  I 
  have 
  not 
  sufficient 
  

   information 
  to 
  continue 
  it 
  down 
  to 
  the 
  junction 
  with 
  the 
  Middle 
  

   Bagshots 
  which 
  have 
  been 
  recorded 
  at 
  Yately, 
  with 
  an 
  altitude 
  of 
  

   about 
  260' 
  O.D. 
  for 
  the 
  upper 
  limit. 
  

  

  Of 
  the 
  outliers 
  there 
  are 
  two 
  small 
  ones 
  on 
  Knaphill 
  Common 
  and 
  

   by 
  Donkey 
  Town, 
  and 
  one 
  larger 
  one 
  on 
  Chobham 
  Common, 
  which 
  I 
  

   have 
  roughly 
  mapped 
  in, 
  as 
  well 
  as 
  a 
  small 
  one 
  on 
  Staples 
  Hill. 
  

  

  I 
  am 
  only 
  too 
  well 
  aware 
  of 
  the 
  unfinished 
  character 
  of 
  this 
  paper, 
  

   but 
  as 
  no 
  opportunity 
  for 
  a 
  more 
  detailed 
  and 
  accurate 
  revision 
  of 
  it 
  

   can 
  occur 
  for 
  at 
  least 
  several 
  years, 
  I 
  have 
  put 
  together 
  what 
  facts 
  I 
  

   have 
  in 
  my 
  possession 
  so 
  as 
  to 
  render 
  them 
  available 
  for 
  others. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XXL 
  

  

  Sketch 
  Map 
  of 
  the 
  Country 
  between 
  Aldershot 
  and 
  Ascot. 
  

   (Scale 
  2 
  miles 
  to 
  1 
  inch.) 
  

  

  Discussion. 
  

  

  The 
  Chairman 
  (Prof. 
  J. 
  W. 
  Judd) 
  remarked 
  on 
  the 
  value 
  to 
  be 
  

   attached 
  to 
  detailed 
  work 
  carried 
  on 
  with 
  excellent 
  topographical 
  

   maps. 
  

  

  Mr. 
  Monckton 
  noted 
  that 
  the 
  line 
  at 
  which 
  the 
  Author 
  had 
  fixed 
  

   the 
  lower 
  limit 
  of 
  the 
  Upper 
  Bagshot 
  Beds 
  practically 
  coincided 
  

   with 
  that 
  taken 
  as 
  the 
  result 
  of 
  recent 
  researches, 
  and 
  differed 
  from 
  

   that 
  taken 
  by 
  the 
  Geological 
  Survey, 
  causing 
  a 
  much 
  wider 
  extension 
  

   of 
  those 
  beds. 
  He 
  considered 
  it 
  most 
  desirable 
  to 
  take 
  the 
  well- 
  

   marked 
  pebble-bed 
  as 
  a 
  dividing-plane. 
  If 
  the 
  Upper 
  Bagshot 
  is 
  

   to 
  be 
  extended 
  beyond 
  the 
  limits 
  of 
  the 
  Bracklesham 
  Beds, 
  he 
  would 
  

   like 
  to 
  learn 
  the 
  evidence 
  for 
  this. 
  Sections 
  at 
  Bracknell, 
  &c, 
  were 
  

   still 
  the 
  subject 
  of 
  controversy. 
  

  

  Mr. 
  Herries 
  preferred 
  not 
  to 
  criticize 
  buried 
  contour-lines 
  off- 
  

   hand. 
  He 
  thought 
  the 
  evidence 
  brought 
  forward 
  as 
  to 
  Hatch 
  

   brickyard 
  being 
  in 
  a 
  syncline 
  was 
  of 
  much 
  interest, 
  and 
  perhaps 
  

   the 
  beds 
  there 
  might 
  after 
  all 
  be 
  Middle 
  Bagshot. 
  

  

  Mr. 
  Siarkie 
  Gardner, 
  with 
  the 
  previous 
  speakers, 
  regretted 
  that 
  

   the 
  Author 
  was 
  leaving 
  the 
  area. 
  

  

  The 
  Author, 
  in 
  reply, 
  congratulated 
  himself 
  that 
  he 
  had 
  avoided 
  

   those 
  controversial 
  matters 
  on 
  which 
  he 
  could 
  not 
  produce 
  con- 
  

   clusive 
  evidence, 
  and 
  so 
  would 
  not 
  commit 
  himself 
  to 
  a 
  definite 
  

   opinion 
  about 
  Bracknell. 
  He 
  thanked 
  the 
  Chairman 
  for 
  the 
  way 
  in 
  

   which 
  he 
  had 
  referred 
  to 
  his 
  work. 
  

  

  Q. 
  J. 
  G. 
  S. 
  No. 
  180. 
  3 
  a 
  

  

  