﻿4:88 
  PROE. 
  J. 
  W. 
  JTTDD 
  ON 
  THE 
  EOCENE 
  AND 
  OLIGOCENE 
  

  

  it 
  has 
  been 
  shown 
  that 
  Oerithium 
  concavum 
  occurred 
  at 
  Colwell 
  

   Bay 
  ; 
  and 
  in 
  all 
  its 
  other 
  fossils 
  the 
  marine 
  bed 
  there 
  was 
  identical 
  

   with 
  the 
  Middle 
  Headon 
  of 
  Headon 
  Hill, 
  and 
  which 
  was 
  no 
  " 
  su- 
  

   perstition.'' 
  Touching 
  the 
  physical 
  evidence, 
  the 
  Colwell-Bay 
  bed 
  

   could 
  be 
  followed 
  with 
  the 
  eye 
  as 
  absolutely 
  continuous 
  up 
  to 
  

   Weston 
  Chine 
  ; 
  it 
  was 
  therefore 
  waste 
  of 
  time 
  to 
  talk 
  of 
  the 
  varia- 
  

   tions 
  of 
  this 
  bed 
  in 
  Colwell 
  Bay 
  as 
  proving 
  any 
  thing 
  ; 
  the 
  only 
  

   place 
  where 
  it 
  was 
  not 
  perfectly 
  continuous 
  was 
  between 
  Weston 
  

   and 
  Widdick 
  Chines 
  ; 
  but 
  the 
  beds 
  below, 
  viz. 
  the 
  Warden 
  sands 
  and 
  

   certain 
  Char 
  a 
  -beds, 
  could 
  be 
  shown 
  to 
  be 
  continuous 
  ; 
  and 
  so 
  the 
  

   series 
  was 
  continued 
  on 
  into 
  that 
  of 
  Headon 
  Hill 
  without 
  any 
  diffi- 
  

   culty. 
  He 
  considered 
  it 
  a 
  very 
  elementary 
  problem 
  in 
  geology. 
  It 
  

   has 
  been 
  previously 
  shown 
  that 
  Prof. 
  Judd 
  has 
  misplaced 
  the 
  posi- 
  

   tion 
  of 
  the 
  0. 
  concavum 
  beds 
  under 
  Heather 
  wood 
  Cottage, 
  and 
  has 
  

   added 
  over 
  100 
  feet 
  here 
  by 
  counting 
  part 
  of 
  the 
  series 
  twice. 
  

   Moreover, 
  if 
  the 
  Colwell-Bay 
  bed 
  existed 
  higher 
  up 
  in 
  Headon 
  Hill, 
  

   as 
  Prof. 
  Judd 
  stated, 
  it 
  ought 
  to 
  be 
  found 
  ; 
  but 
  in 
  the 
  position 
  indi- 
  

   cated 
  quite 
  other 
  and 
  freshwater 
  beds 
  existed. 
  The 
  speaker 
  main- 
  

   tained 
  all 
  that 
  had 
  been 
  printed 
  in 
  the 
  paper 
  referred 
  to, 
  and 
  felt 
  

   convinced 
  that 
  the 
  orthodox 
  view 
  was 
  correct. 
  

  

  Mr. 
  Bott 
  asked 
  what 
  came 
  in 
  between 
  the 
  two 
  series. 
  The 
  argu- 
  

   ment 
  of 
  the 
  alteration 
  cut 
  both 
  ways. 
  The 
  beds, 
  after 
  changing 
  

   for 
  a 
  while, 
  might 
  return 
  to 
  their 
  former 
  condition. 
  

  

  Mr. 
  Keeping 
  said 
  that 
  the 
  correlation 
  of 
  the 
  Bracklesham 
  beds 
  

   at 
  WhiteclifF 
  Bay, 
  Stubbington, 
  and 
  Selsca 
  Bill 
  was 
  certainly 
  correct, 
  

   and 
  in 
  the 
  Xew 
  Forest 
  probably 
  so. 
  There 
  could 
  be 
  no 
  doubt 
  about 
  

   the 
  correlation 
  of 
  the 
  Middle 
  Headon 
  beds 
  at 
  Hordwcll, 
  Colwell 
  

   Bay, 
  and 
  Whitccliff 
  Bay. 
  The 
  zone 
  of 
  Voluta 
  geminata 
  was 
  some 
  

   20 
  feet 
  thick 
  above 
  the 
  Brockenhurst 
  zone. 
  He 
  regarded 
  the 
  

   Upper 
  Headon 
  as 
  a 
  truly 
  lacustrine 
  series, 
  never 
  having 
  found 
  any 
  

   marine 
  fossils 
  in 
  it 
  : 
  nor 
  had 
  he 
  done 
  so 
  in 
  the 
  Lower 
  ; 
  but 
  in 
  the 
  

   Middle 
  Headon 
  freshwater 
  forms 
  were 
  mixed 
  with 
  marine. 
  He 
  

   thought 
  that 
  the 
  Geological 
  Survey 
  would 
  be 
  found 
  to 
  be 
  correct 
  in 
  

   their 
  reading. 
  

  

  Mr. 
  Watts 
  said 
  that 
  he 
  had 
  searched 
  very 
  carefully 
  above 
  the 
  

   Upper 
  Headon 
  limestone, 
  and 
  had 
  found 
  no 
  marine 
  beds, 
  and 
  could 
  

   more 
  readily 
  understand 
  that 
  the 
  former 
  bed 
  had 
  thinned 
  rather 
  than 
  

   that 
  the 
  Middle 
  Headon 
  group 
  of 
  the 
  latter 
  character 
  should 
  have 
  

   disappeared. 
  

  

  Prof. 
  Jtjdd 
  was 
  glad 
  to 
  find 
  that 
  Prof. 
  Prestwich 
  agreed 
  with 
  him 
  

   as 
  to 
  the 
  variability 
  of 
  the 
  fluvio-marine 
  series, 
  and 
  also 
  as 
  to 
  the 
  

   main 
  facts 
  of 
  the 
  classification 
  of 
  the 
  Oligocene 
  strata. 
  As 
  regarded 
  

   one 
  point 
  remarked 
  on, 
  viz. 
  the 
  absence 
  of 
  the 
  Colwell-Bay 
  marine 
  

   bed 
  in 
  Headon 
  Hill, 
  he 
  had 
  indicated 
  that 
  by 
  the 
  time 
  it 
  had 
  reached 
  

   Totland-Bay 
  brickyard 
  it 
  had 
  become 
  reduced 
  as 
  a 
  marine 
  band 
  to 
  a 
  

   bed 
  not 
  18 
  inches 
  thick. 
  These 
  brackish-water 
  bands 
  thinned 
  out 
  

   very 
  rapidly. 
  Hence 
  it 
  was 
  very 
  probable 
  that 
  the 
  bed 
  had 
  died 
  out 
  

   before 
  reaching 
  Headon 
  Hill. 
  As 
  regards 
  the 
  Gerithm, 
  he 
  had 
  not 
  

   been 
  able 
  in 
  Whitecliff 
  Bay 
  to 
  find 
  C. 
  concavum 
  in 
  the 
  series 
  he 
  had 
  

   called 
  Brockenhurst. 
  His 
  opponents 
  rested 
  their 
  case 
  on 
  the 
  identity 
  

  

  