﻿2 
  PEOCEEDLXGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  the 
  first 
  time, 
  in 
  conformity 
  with 
  the 
  Bye-Laws 
  Sect. 
  YI 
  b, 
  Art. 
  6, 
  

   in 
  consequence 
  of 
  the 
  non-payment 
  of 
  the 
  arrears 
  of 
  their 
  contri- 
  

   butions. 
  

  

  W. 
  WMtaker, 
  Esq., 
  B.A., 
  F.B.S., 
  F.G.S., 
  who 
  exhibited 
  a 
  series 
  of 
  

   specimens 
  from 
  the 
  deep 
  boring 
  at 
  Streatham, 
  made 
  some 
  remarks 
  

   upon 
  the 
  results 
  obtained, 
  of 
  which 
  the 
  following 
  is 
  an 
  abstract 
  : 
  — 
  

  

  After 
  passing 
  through 
  10 
  feet 
  of 
  gravel 
  &c, 
  153 
  of 
  London 
  Clay, 
  

   88^ 
  of 
  Lower 
  London 
  Tertiaries. 
  623 
  of 
  Chalk 
  (the 
  least 
  thickness 
  

   in 
  any 
  of 
  the 
  deep 
  borings 
  in 
  and 
  near 
  London), 
  2Sh 
  of 
  Upper 
  

   Greensand, 
  and 
  188^ 
  of 
  Gault, 
  at 
  the 
  depth 
  of 
  1081| 
  feet 
  hard 
  

   limestone, 
  mostly 
  with 
  rather 
  large 
  oolitic 
  grains, 
  was 
  met 
  with. 
  

   This, 
  with 
  alternations 
  of 
  a 
  finer 
  character, 
  sandy 
  and 
  clayey, 
  lasted 
  

   for 
  only 
  38| 
  feet, 
  being 
  much 
  less 
  than 
  the 
  thickness 
  of 
  the 
  Jurassic 
  

   beds, 
  either 
  at 
  Richmond 
  or 
  at 
  Meux's 
  boring. 
  In 
  general 
  cha- 
  

   racter 
  the 
  cores 
  showed 
  a 
  likeness 
  to 
  the 
  Forest 
  Marble, 
  and 
  the 
  

   occurrence 
  of 
  Ostrea 
  acuminata 
  agreed 
  therewith. 
  

  

  At 
  the 
  depth 
  of 
  1120 
  feet 
  the 
  tools 
  entered 
  a 
  set 
  of 
  beds 
  of 
  much 
  

   the 
  same 
  character 
  as 
  those 
  that 
  had 
  been 
  found 
  beneath 
  Jurassic 
  

   beds 
  at 
  Richmond, 
  and 
  beneath 
  Gault 
  at 
  Kentish 
  Town 
  and 
  at 
  

   Crossness. 
  The 
  softer 
  and 
  more 
  clayey 
  components 
  were 
  not 
  brought 
  

   up 
  ; 
  the 
  harder 
  consist 
  of 
  fine-grained 
  compact 
  sandstones, 
  greenish 
  

   grey, 
  sometimes 
  with 
  purplish 
  mottlings 
  or 
  bandings, 
  and 
  here 
  and 
  

   there 
  wholly 
  of 
  a 
  dull 
  reddish 
  tint. 
  With 
  these 
  there 
  occur 
  hard, 
  

   clayey, 
  and 
  somewhat 
  sandy 
  beds, 
  which 
  are 
  not 
  calcareous, 
  whilst 
  

   most 
  of 
  the 
  sandstones 
  are. 
  Thin 
  veins 
  of 
  calcite 
  are 
  sometimes 
  to 
  

   be 
  seen, 
  and 
  at 
  others 
  small 
  concretionary 
  calcareous 
  nodules 
  ; 
  but 
  

   no 
  trace 
  of 
  a 
  fossil 
  has 
  been 
  found. 
  The 
  bedding 
  is 
  shown, 
  both 
  by 
  

   the 
  bands 
  of 
  colour 
  and 
  by 
  the 
  tendency 
  of 
  the 
  stone 
  to 
  fracture, 
  

   to 
  vary 
  generally 
  from 
  about 
  20° 
  to 
  30°. 
  

  

  In 
  the 
  absence 
  of 
  evidence 
  it 
  is 
  hard 
  to 
  say 
  what 
  these 
  beds 
  are, 
  

   and 
  the 
  possibilities 
  of 
  their 
  age 
  seem 
  to 
  range 
  from 
  Trias 
  to 
  De- 
  

   vonian. 
  It 
  is 
  to 
  be 
  hoped 
  that 
  this 
  question 
  may 
  be 
  solved, 
  as 
  on 
  

   it 
  depends 
  that 
  of 
  the 
  possibility 
  of 
  the 
  presence 
  of 
  Coal-measures 
  

   in 
  the 
  district 
  ; 
  and 
  Messrs. 
  Docwra, 
  the 
  contractors 
  of 
  the 
  works, 
  

   have 
  with 
  great 
  liberality 
  undertaken 
  to 
  continue 
  the 
  boring-opera- 
  

   tions 
  at 
  their 
  own 
  expense 
  for 
  at 
  least 
  another 
  week. 
  

  

  Details 
  of 
  the 
  section 
  will 
  be 
  given 
  in 
  a 
  forthcoming 
  Geological 
  

   Survey 
  Memoir, 
  in 
  which, 
  moreover, 
  the 
  subject 
  of 
  the 
  old 
  rocks 
  

   under 
  London 
  will 
  be 
  treated 
  somewhat 
  fully. 
  

  

  Discussion. 
  

  

  The 
  Peesidext 
  inquired 
  how 
  much 
  had 
  been 
  accomplished 
  during 
  

   the 
  last 
  week. 
  

  

  Prof. 
  Jtjdd 
  had 
  not 
  much 
  to 
  add 
  to 
  Mr. 
  "Whitaker's 
  statement. 
  

   He 
  noticed 
  a 
  great 
  similarity 
  in 
  character 
  to 
  the 
  rocks 
  of 
  the 
  

   Pdchmond 
  boring 
  ; 
  but 
  at 
  Streatham 
  the 
  Mesozoic 
  beds 
  were 
  thinner. 
  

   If 
  an 
  appeal 
  was 
  made 
  to 
  the 
  scientific 
  world, 
  it 
  should 
  be 
  done 
  at 
  

   once; 
  it 
  would 
  be 
  difficult 
  to 
  ask 
  for 
  assistance 
  if 
  the 
  present 
  

   character 
  of 
  the 
  work 
  was 
  maintained. 
  

  

  