﻿F. 
  G. 
  H. 
  PRICE 
  ON 
  XHE 
  GATJLT 
  OF 
  FOLKESTONE. 
  367 
  

  

  forms 
  of 
  nodules, 
  he 
  remarked 
  that 
  in 
  the 
  Crag 
  the 
  nodules 
  round 
  

   the 
  fang-like 
  bases 
  of 
  sharks' 
  teeth 
  were 
  more 
  or 
  less 
  globular 
  ; 
  and 
  

   he 
  did 
  not 
  think 
  that 
  the 
  form 
  of 
  nodules 
  has 
  any 
  relation 
  to 
  that 
  

   of 
  the 
  nucleus 
  around 
  which 
  they 
  may 
  have 
  been 
  aggregated. 
  

  

  Mr. 
  Hawkins 
  Johnson 
  considered 
  the 
  nodules 
  to 
  be 
  due 
  to 
  organic 
  

   structures, 
  probably 
  sponges, 
  which 
  had 
  grown 
  upon 
  a 
  hard 
  bottom, 
  

   and 
  afterwards 
  been 
  affected 
  by 
  its 
  mineral 
  constituents. 
  

  

  Mr. 
  Teal 
  inquired 
  whether 
  the 
  nodules 
  at 
  the 
  base 
  of 
  the 
  Gault 
  

   had 
  been 
  rolled. 
  

  

  Mr. 
  Seeley, 
  having 
  examined 
  the 
  supposed 
  Crocodile's 
  egg, 
  de- 
  

   clared 
  that 
  from 
  its 
  form 
  it 
  could 
  not 
  be 
  that 
  of 
  a 
  Crocodile, 
  and 
  he 
  

   did 
  not 
  think 
  it 
  was 
  that 
  of 
  a 
  Turtle. 
  It 
  might 
  possibly 
  be 
  the 
  egg 
  

   of 
  an 
  Ichthyosaurus 
  or 
  Plesiosaurus. 
  He 
  stated 
  that 
  he 
  had 
  found 
  

   nodules 
  of 
  different 
  forms 
  scattered 
  indiscriminately 
  in 
  the 
  Gault, 
  

   and 
  that 
  his 
  investigations 
  led 
  him 
  to 
  believe 
  that 
  all 
  these 
  nodules 
  

   had 
  been 
  subjected 
  to 
  wear 
  and 
  tear 
  before 
  coming 
  into 
  their 
  present 
  

   position. 
  The 
  subdivisions 
  of 
  the 
  Gault 
  recognized 
  at 
  Folkestone 
  

   would 
  not, 
  he 
  thought, 
  be 
  represented 
  elsewhere 
  ; 
  for 
  their 
  mineral 
  

   characters 
  were 
  found 
  to 
  change 
  greatly 
  towards 
  the 
  west, 
  the 
  Gault 
  

   itself 
  becoming 
  more 
  sandy 
  and 
  micaceous 
  as 
  it 
  approaches 
  the 
  gra- 
  

   nitic 
  rocks. 
  He 
  believed 
  that 
  the 
  Blackdown 
  beds 
  represented 
  both 
  

   the 
  Greensand 
  and 
  the 
  Gault. 
  

  

  Prof. 
  Hughes 
  thought 
  that 
  we 
  should 
  take 
  as 
  the 
  base 
  of 
  the 
  

   Lower 
  Cretaceous 
  Series 
  the 
  first 
  marine 
  beds 
  which 
  succeed 
  the 
  

   freshwater 
  deposits 
  of 
  the 
  S.E. 
  of 
  England 
  and 
  rest 
  on 
  the 
  Trias 
  and 
  

   older 
  rocks 
  in 
  the 
  S.W. 
  He 
  considered 
  them 
  to 
  be 
  deposits 
  formed 
  

   during 
  a 
  considerable 
  period, 
  as 
  successive 
  parts 
  of 
  an 
  irregular 
  

   land-surface 
  were 
  being 
  depressed 
  below 
  the 
  sea; 
  so 
  that 
  a 
  shore 
  

   deposit 
  might 
  be 
  formed 
  at 
  Blackdown 
  while 
  fine 
  sand 
  or 
  clay 
  

   was 
  being 
  thrown 
  down 
  further 
  out 
  to 
  sea 
  over 
  that 
  part 
  of 
  the 
  

   south-east 
  of 
  England 
  which 
  had 
  already 
  been 
  submerged 
  to 
  a 
  con- 
  

   siderable 
  depth. 
  

  

  Prof. 
  Ramsat 
  observed 
  that 
  the 
  value 
  of 
  such 
  detailed 
  sections, 
  in 
  

   a 
  pakeontological 
  point 
  of 
  view, 
  was 
  very 
  great 
  ; 
  and 
  with 
  respect 
  

   to 
  the 
  physical 
  relations 
  of 
  the 
  Gault 
  and 
  Upper 
  Greensand, 
  he 
  stated 
  

   that 
  in 
  some 
  parts 
  of 
  England 
  there 
  is 
  lithologically 
  no 
  clear 
  line 
  of 
  

   demarcation 
  between 
  the 
  two 
  formations 
  ; 
  and, 
  in 
  like 
  manner, 
  in 
  

   some 
  other 
  areas 
  there 
  is 
  no 
  very 
  definite 
  boundary 
  line 
  between 
  

   the 
  Upper 
  Greensand 
  and 
  the 
  Chalk. 
  He 
  then 
  drew 
  attention 
  to 
  

   . 
  the 
  views 
  originally 
  advanced 
  by 
  Mr. 
  Godwin-Austen, 
  who 
  showed 
  

   that 
  in 
  this 
  part 
  of 
  the 
  world 
  all 
  these 
  Upper 
  Cretaceous 
  formations 
  

   were 
  deposited 
  over 
  a 
  great 
  continental 
  area 
  that 
  was 
  being 
  slowly 
  

   submerged, 
  so 
  that 
  while 
  the 
  Upper 
  Greensand 
  began 
  to 
  be 
  deposited 
  

   in 
  the 
  sea 
  in 
  one 
  area 
  much 
  of 
  the 
  land 
  still 
  stood 
  above 
  water, 
  and 
  

   as 
  it 
  got 
  depressed 
  these 
  Greensand 
  strata 
  were 
  gradually 
  deposited 
  

   on 
  the 
  sinking 
  land. 
  For 
  this 
  reason 
  the 
  two 
  ends, 
  so 
  to 
  speak, 
  of 
  a 
  

   long 
  section 
  of 
  the 
  Greensand 
  will 
  be 
  of 
  somewhat 
  different 
  age 
  ; 
  

   and 
  while 
  the 
  end 
  nearest 
  the 
  land 
  was 
  being 
  deposited 
  as 
  sand, 
  

   further 
  out 
  at 
  sea 
  true 
  Chalk 
  was 
  being 
  formed 
  ; 
  and 
  thus 
  much 
  of 
  

   the 
  Upper 
  Greensand 
  may 
  be 
  considered 
  to 
  have 
  been 
  formed 
  con- 
  

  

  