﻿184 
  

  

  W. 
  SHONE 
  ON 
  THE 
  DISCOVERY 
  OE 
  FORAMINIFERA 
  ETC. 
  

  

  clay 
  of 
  Chester, 
  so 
  far, 
  appear 
  to 
  confirm 
  Mr. 
  Mackintosh's 
  conclu- 
  

   sions. 
  "When 
  the 
  surface 
  of 
  this 
  part 
  of 
  England 
  was 
  submerged 
  

   beneath 
  the 
  Upper 
  Boulder-clay 
  sea, 
  and 
  the 
  striated 
  erratics 
  from 
  

   the 
  Lake 
  -district, 
  borne 
  on 
  floating 
  ice, 
  were 
  being 
  dropped 
  on 
  the 
  

   muddy 
  bottom 
  consisting 
  of 
  this 
  clay, 
  there 
  must 
  have 
  been 
  large 
  

   volumes 
  of 
  fresh 
  water 
  poured 
  into 
  it, 
  especially 
  when 
  the 
  accumu- 
  

   lated 
  winter's 
  ice 
  and 
  snow 
  melted 
  before 
  the 
  increasing 
  heat 
  of 
  

   summer. 
  "Would 
  not 
  such 
  an 
  addition 
  of 
  fresh 
  water 
  to 
  a 
  shallow 
  

   sea 
  be 
  likely 
  to 
  have 
  the 
  same 
  effect 
  upon 
  the 
  Foraminifera 
  of 
  that 
  

   period 
  as 
  the 
  freshwater 
  of 
  tidal 
  rivers 
  has 
  upon 
  the 
  recent 
  Fora- 
  

   miniferal 
  fauna 
  characteristic 
  of 
  estuaries 
  ? 
  

  

  I 
  may 
  here 
  mention 
  that 
  the 
  Foraminifera 
  and 
  Ostracoda 
  from 
  

   the 
  TurritellcB 
  in 
  the 
  Lower 
  Boulder-clay 
  of 
  Dawpool 
  bear 
  a 
  

   more 
  fossilized 
  appearance 
  than 
  those 
  from 
  the 
  Turritellce 
  in 
  the 
  

   Upper 
  Boulder-clay 
  of 
  Newton-by-Chester. 
  The 
  Ostracoda 
  from 
  

   the 
  Dawpool 
  clay 
  have 
  not 
  yet 
  been 
  named. 
  

  

  I 
  trust 
  that 
  those 
  interested 
  in 
  the 
  fauna 
  of 
  the 
  English 
  drifts 
  

   will 
  endeavour 
  to 
  search 
  for 
  Foraminifera 
  &c. 
  in 
  these 
  glacial 
  

   deposits. 
  I 
  believe 
  that 
  the 
  distribution 
  of 
  the 
  Turritellce 
  containing 
  

   Foraminifera 
  and 
  Ostracoda 
  <fcc. 
  will 
  be 
  found 
  to 
  be 
  coextensive 
  

   with 
  the 
  distribution 
  of 
  the 
  Lake-district 
  erratics 
  in 
  the 
  Boulder- 
  

   clays. 
  

  

  Note. 
  — 
  For 
  the 
  results 
  of 
  the 
  Rev. 
  H. 
  "W. 
  Crosskey's 
  and 
  

   Mr. 
  David 
  Robertson's 
  investigations 
  of 
  the 
  fauna 
  of 
  the 
  Post- 
  

   tertiary 
  fossiliferous 
  beds 
  of 
  Scotland, 
  see 
  the 
  ' 
  Transactions 
  of 
  the 
  

   Geological 
  Society 
  of 
  Glasgow,' 
  vols. 
  iii. 
  and 
  iv. 
  

  

  Note 
  on 
  Mollusca 
  from 
  the 
  Boulder-clay 
  at 
  Newton, 
  near 
  Chester. 
  

  

  CoNCIIIFERA. 
  

  

  1. 
  Mytilus 
  edulis, 
  Linne. 
  

  

  2. 
  Cardium 
  echinatum, 
  L. 
  

  

  3. 
  C. 
  eduie, 
  L. 
  

  

  4. 
  Cyprina 
  islandica, 
  L. 
  

  

  5. 
  Astarte 
  sulcata, 
  Da 
  Costa. 
  

  

  6. 
  A. 
  borealis, 
  Chemnitz. 
  

  

  7. 
  Tellina 
  balthica, 
  L. 
  

  

  8. 
  T. 
  calcaria, 
  Ch. 
  

  

  9. 
  Mactra 
  solida, 
  L. 
  ; 
  var. 
  elliptica, 
  

  

  Brown. 
  

  

  10. 
  Mya 
  truncate, 
  L. 
  

  

  1 
  1 
  . 
  Saxicava 
  rugosa, 
  L. 
  

  

  Gasteropoda. 
  

  

  12. 
  Lacuna 
  divaricate. 
  Fabricins. 
  

  

  13. 
  Littorina 
  rudis, 
  Maton. 
  

  

  14. 
  Turritella 
  terebra, 
  L. 
  

  

  15. 
  Aporrhais 
  pes-peleeani, 
  L. 
  

  

  16. 
  Purpura 
  lapillus, 
  L. 
  

  

  17. 
  Buccinum 
  undatum, 
  L. 
  

  

  18. 
  Murex 
  erinaceus, 
  L. 
  

  

  19. 
  Trophon 
  truncatus, 
  Strom. 
  

  

  20. 
  Fubus 
  antiquus, 
  L. 
  

  

  21. 
  Nassa 
  reticulata, 
  L. 
  

  

  22. 
  Pleurotoma 
  pyramidalis, 
  Str. 
  

  

  All 
  the 
  above 
  except 
  Astarte 
  borealis 
  and 
  Pleurotoma 
  pyramidalis 
  

   inhabit 
  the 
  British 
  coasts, 
  and 
  are 
  littoral 
  or 
  sublittoral. 
  A. 
  borealis 
  

   and 
  P. 
  pyramidalis 
  are 
  more 
  northern 
  species 
  [J. 
  Gwtn 
  Jeffreys]. 
  

  

  Discussion. 
  

  

  Mr. 
  Evans 
  remarked 
  that 
  there 
  seemed 
  to 
  him 
  to 
  be 
  two 
  principal 
  

   points 
  for 
  discussion 
  in 
  the 
  paper 
  : 
  — 
  first, 
  whether 
  the 
  Foraminifera 
  

  

  