﻿PLIOCENE 
  PERIOD 
  IN 
  ENGLAND. 
  745 
  

  

  noticed 
  the 
  remarkable 
  assemblage 
  of 
  southern 
  forms 
  of 
  fossil 
  Mol- 
  

   lusca 
  found 
  at 
  Selsea 
  ; 
  and 
  he 
  questioned 
  the 
  former 
  occurrence 
  of 
  

   glacial 
  conditions 
  in 
  that 
  part 
  of 
  England. 
  He 
  suggested 
  that 
  tho 
  

   deposit 
  described 
  in 
  the 
  paper 
  ought 
  to 
  be 
  called 
  Posttertiary, 
  and 
  

   not 
  Newer 
  Pliocene. 
  

  

  Mr. 
  Whitaker 
  referred 
  to 
  the 
  great 
  value 
  of 
  the 
  abstract 
  supplied 
  

   by 
  Mr. 
  Wood. 
  He 
  did 
  not 
  agree 
  with 
  the 
  author 
  that 
  the 
  Brandon 
  

   brick-earths 
  are 
  interstratified 
  with 
  the 
  Great 
  Chalky 
  Boulder-clay, 
  

   but 
  thought 
  that 
  the 
  Boulder-clay 
  underlying 
  the 
  brick-earth 
  was 
  a 
  

   distinct 
  deposit. 
  The 
  so-called 
  " 
  Hunstanton 
  Gravel 
  " 
  is 
  nothing 
  

   but 
  a 
  mass 
  of 
  shingle 
  and 
  sand 
  a 
  little 
  above 
  the 
  sea-level. 
  He 
  

   thought 
  the 
  brick-earth 
  of 
  the 
  Nar 
  to 
  be 
  of 
  almost 
  as 
  modern 
  age 
  as 
  

   the 
  mud 
  of 
  the 
  Thames. 
  He 
  was 
  interested 
  by 
  the 
  ingenious 
  theory 
  

   of 
  sliding 
  muds 
  in 
  Arctic 
  regions. 
  

  

  In 
  reply 
  to 
  Dr. 
  Jeffreys 
  he 
  pointed 
  out 
  that 
  Corbicula 
  fluminalis 
  

   occurs 
  in 
  the 
  Crag. 
  He 
  thought 
  that 
  the 
  range 
  of 
  species 
  might 
  

   have 
  been 
  very 
  different 
  in 
  former 
  times 
  from 
  what 
  it 
  is 
  at 
  present. 
  

   Mr. 
  S.V. 
  Wood 
  had 
  found 
  Mediterranean 
  shells 
  in 
  deposits 
  which 
  were 
  

   undoubtedly 
  of 
  glacial 
  age. 
  He 
  remarked 
  upon 
  the 
  difficulty 
  of 
  

   drawing 
  a 
  line 
  between 
  the 
  Pliocene 
  and 
  Drift 
  deposits, 
  and 
  ex- 
  

   pressed 
  his 
  sense 
  of 
  the 
  great 
  value 
  of 
  these 
  researches 
  of 
  Mr. 
  Wood. 
  

   Prof. 
  Seelet 
  admitted 
  that 
  the 
  gravels 
  of 
  Hunstanton 
  (which 
  he 
  

   had 
  first 
  described) 
  exhibited 
  in 
  places 
  beach- 
  conditions, 
  but 
  they 
  

   graduated 
  into 
  estuarine 
  and 
  freshwater 
  deposits. 
  He 
  thought 
  Mr. 
  

   Wood 
  had 
  not 
  sufficiently 
  taken 
  into 
  account 
  the 
  necessarily 
  local 
  

   characters 
  of 
  many 
  of 
  these 
  gravel 
  deposits 
  in 
  relation 
  to 
  the 
  con- 
  

   tours 
  of 
  existing 
  valleys 
  while 
  estuaries 
  were 
  disappearing 
  from 
  

   them, 
  and 
  when 
  many 
  parts 
  of 
  the 
  country 
  were 
  at 
  different 
  levels 
  

   relatively 
  to 
  what 
  now 
  obtains. 
  

  

  Mr. 
  Koch 
  stated 
  that 
  he 
  had 
  seen 
  in 
  Norway, 
  during 
  changes 
  of 
  

   wind, 
  masses 
  of 
  ice, 
  containing 
  shells 
  frozen 
  into 
  it, 
  sometimes 
  

   carried 
  60 
  or 
  70 
  miles 
  down 
  the 
  fiords. 
  

  

  Q. 
  J. 
  G. 
  S. 
  No. 
  152. 
  3 
  d 
  

  

  