﻿IN 
  THE 
  BOUI.DEK-CLAYS 
  OF 
  CHESHIRE. 
  185 
  

  

  cited 
  were 
  peculiar 
  to 
  brackish 
  water 
  ; 
  and, 
  secondly, 
  whether 
  the 
  

   Turritellce 
  had 
  been 
  transported. 
  

  

  Mr. 
  Gwyn 
  Jeffreys 
  said 
  that 
  the 
  Foraminifera 
  sent 
  by 
  Mr. 
  Shone 
  

   are 
  exactly 
  the 
  same 
  as 
  those 
  found 
  on 
  the 
  coasts 
  of 
  Great 
  Britain. 
  

   The 
  Turritellce 
  presented 
  a 
  puzzling 
  question. 
  The 
  Foraminifera 
  in- 
  

   habit 
  the 
  Laminarian 
  zone, 
  and 
  their 
  light 
  shells 
  are 
  thrown 
  up 
  at 
  

   the 
  edge 
  of 
  high 
  water, 
  so 
  that 
  they 
  would 
  naturally 
  fill 
  any 
  shells 
  

   that 
  might 
  be 
  lying 
  on 
  the 
  shore 
  about 
  that 
  line. 
  The 
  Turritellce 
  

   might 
  have 
  been 
  transported 
  by 
  ground-ice. 
  The 
  species 
  was 
  Tur- 
  

   ritella 
  terebra, 
  the 
  common 
  European 
  species. 
  Mr. 
  Jeffreys 
  remarked 
  

   that 
  we 
  know 
  comparatively 
  little 
  of 
  the 
  Arctic 
  fauna 
  at 
  present, 
  

   and 
  that 
  it 
  was 
  highly 
  desirable 
  that 
  an 
  expedition 
  should 
  be 
  sent 
  

   to 
  investigate 
  the 
  marine 
  fauna 
  of 
  high 
  northern 
  latitudes. 
  

  

  Prof. 
  T. 
  Kupert 
  Jones 
  stated 
  that 
  the 
  Rotalice 
  are 
  not 
  identical 
  

   all 
  round 
  the 
  coasts, 
  those 
  from 
  different 
  localities 
  presenting 
  dif- 
  

   ferent 
  characters, 
  as 
  may 
  be 
  plainly 
  seen 
  in 
  the 
  Rotalia 
  JBeccarii 
  of 
  

   the 
  Adriatic 
  and 
  of 
  the 
  English 
  coasts. 
  Various 
  circumstances 
  

   seem 
  to 
  act 
  in 
  changing 
  the 
  forms, 
  especially 
  whether 
  the 
  animals 
  

   have 
  inhabited 
  deep 
  or 
  shallow 
  water, 
  or 
  water 
  more 
  or 
  less 
  fresh. 
  

   The 
  Olobigerince 
  have 
  thicker 
  shells 
  in 
  deep 
  than 
  in 
  shallow 
  water. 
  

   When 
  ill-nourished, 
  Foraminifera 
  alter 
  in 
  the 
  style 
  of 
  their 
  outline. 
  

  

  Prof. 
  Hughes 
  remarked 
  upon 
  the 
  difference 
  of 
  opinion 
  prevailing 
  

   as 
  to 
  the 
  geographical 
  affinities 
  of 
  the 
  shells 
  found 
  in 
  this 
  deposit, 
  

   and 
  as 
  to 
  the 
  origin 
  of 
  the 
  deposit 
  itself. 
  He 
  discussed 
  the 
  question 
  

   of 
  the 
  origin 
  of 
  the 
  clay, 
  and 
  came 
  to 
  the 
  conclusion 
  that 
  it 
  was 
  not 
  

   a 
  true 
  Boulder-clay, 
  but 
  derived. 
  

  

  Mr. 
  Seelet 
  referred 
  to 
  a 
  Boulder-clay, 
  at 
  March, 
  in 
  Cambridge- 
  

   shire, 
  containing 
  Foraminifera 
  now 
  common 
  on 
  our 
  present 
  shores. 
  

  

  