﻿732 
  SEARLES 
  V. 
  WOOD 
  ON 
  THE 
  NEWER 
  

  

  extrusion 
  of 
  moraine 
  from 
  which 
  G' 
  originated 
  ceased 
  while 
  low- 
  

   water 
  mark 
  was 
  still 
  above 
  the 
  level 
  of 
  the 
  bed 
  H 
  ; 
  and 
  that 
  there- 
  

   upon 
  mollusca 
  established 
  themselves 
  upon 
  this 
  moraine, 
  and 
  their 
  

   remains 
  became 
  imbedded 
  in 
  sands 
  that 
  accumulated 
  in 
  its 
  hollows, 
  

   in 
  the 
  same 
  way 
  that 
  at 
  an 
  earlier 
  period 
  this 
  occurred 
  on 
  the 
  clay 
  

   of 
  the 
  major 
  giaciation 
  at 
  Dimlington, 
  after 
  the 
  change 
  in 
  the 
  in- 
  

   clination 
  of 
  England 
  caused 
  the 
  ice 
  to 
  recede 
  through 
  the 
  Humber 
  

   and 
  uncover 
  that 
  clay, 
  only 
  that 
  the 
  sands 
  containing 
  such 
  remains 
  

   there 
  became 
  mixed 
  up 
  in 
  the 
  moraine 
  either 
  from 
  movements 
  of 
  

   the 
  ice 
  during 
  this 
  recession 
  or 
  from 
  the 
  passage 
  of 
  the 
  Purple-clay 
  

   ice 
  over 
  the 
  place 
  of 
  them. 
  

  

  To 
  what 
  limit 
  the 
  present 
  shores 
  of 
  England 
  may 
  have 
  been 
  

   extended 
  beyond 
  their 
  present 
  position 
  by 
  emergence 
  subsequent 
  to 
  

   the 
  point 
  to 
  which 
  I 
  have 
  now 
  traced 
  this, 
  there 
  is 
  nothing 
  beyond 
  

   the 
  depth 
  at 
  which 
  the 
  land- 
  surfaces 
  round 
  the 
  coast 
  (which 
  are 
  

   evidently 
  connected 
  with 
  the 
  surface 
  of 
  forest-growth 
  under 
  the 
  

   marshes 
  of 
  our 
  rivers) 
  occur 
  to 
  afford 
  any 
  indication. 
  The 
  greatest 
  

   depth 
  of 
  this 
  kind 
  appears 
  to 
  be 
  that 
  noticed 
  by 
  Mr. 
  Rome 
  and 
  

   myself 
  (in 
  the 
  paper 
  in 
  the 
  twenty 
  -fourth 
  volume 
  of 
  the 
  ' 
  Journal,' 
  

   already 
  referred 
  to), 
  which 
  the 
  Grirnsby-Dock 
  works 
  disclosed, 
  and 
  

   which 
  was 
  52 
  feet 
  below 
  high-water 
  mark 
  of 
  spring 
  tides. 
  The 
  

   extension 
  which 
  this 
  depth 
  would 
  indicate 
  in 
  connexion 
  with 
  so 
  

   flat 
  a 
  coast 
  as 
  that 
  of 
  Lincolnshire 
  is 
  not 
  inconsiderable, 
  and 
  of 
  

   course 
  the 
  extension 
  may 
  have 
  been 
  far 
  greater 
  than 
  this. 
  I 
  do 
  

   not, 
  however, 
  imagine 
  that 
  it 
  was 
  so 
  to 
  any 
  very 
  great 
  degree 
  ; 
  

   but 
  the 
  depression, 
  although 
  it 
  does 
  not 
  appear 
  to 
  have 
  either 
  in- 
  

   creased 
  or 
  decreased 
  in 
  other 
  parts 
  of 
  England 
  since 
  the 
  Eoman 
  

   invasion, 
  seems 
  to 
  be 
  still 
  proceeding 
  in 
  Cornwall, 
  and 
  on 
  the 
  coast 
  

   of 
  Brittany, 
  it 
  is 
  said, 
  has 
  caused 
  perceptible 
  changes 
  since 
  that 
  

   epoch. 
  

  

  Co 
  ncluding 
  Rem 
  m 
  •/ 
  'S 
  . 
  

  

  Though 
  many 
  subjects 
  of 
  geological 
  and 
  palseontological 
  import- 
  

   ance 
  are 
  involved 
  in 
  the 
  correct 
  interpretation 
  of 
  the 
  phenomena 
  

   connected 
  with 
  the 
  Newer 
  Pliocene 
  period, 
  I 
  confine 
  the 
  remarks 
  

   which 
  I 
  have 
  to 
  make 
  on 
  them 
  to 
  the 
  points 
  specially 
  touched 
  by 
  

   the 
  sequence 
  of 
  events 
  which 
  I 
  have 
  traced 
  in 
  this 
  memoir. 
  These 
  

   are 
  : 
  — 
  1st, 
  The 
  coexistence 
  of 
  arboreal 
  vegetation 
  with 
  the 
  land- 
  

   ice 
  ; 
  2ndly, 
  The 
  presence 
  of 
  the 
  remains 
  of 
  Hippopotamus 
  as 
  indi- 
  

   cative 
  of 
  interglacial 
  periods 
  ; 
  3rdly, 
  The 
  existence 
  of 
  an 
  open 
  North 
  

   Sea 
  during 
  the 
  major 
  giaciation 
  ; 
  and, 
  4thly, 
  The 
  light 
  furnished 
  by 
  

   the 
  giaciation 
  of 
  England 
  on 
  theories 
  of 
  climate. 
  

  

  As 
  to 
  the 
  first 
  point, 
  though 
  land-ice 
  is, 
  in 
  Greenland 
  and 
  Spitz- 
  

   bergen, 
  accompanied 
  by 
  the 
  absence 
  of 
  arboreal 
  vegetation, 
  this 
  is 
  

   not 
  the 
  case 
  in 
  the 
  southern 
  hemisphere, 
  the 
  ice-fields 
  of 
  South 
  

   America 
  escaping 
  to 
  the 
  Straits 
  of 
  Magellan 
  and 
  to 
  the 
  channels 
  of 
  

   the 
  west 
  coast 
  immediately 
  north 
  of 
  that 
  strait 
  by 
  glaciers 
  which 
  

   pass 
  through 
  a 
  country 
  that 
  in 
  parts 
  is 
  densely 
  wooded. 
  This 
  seems 
  

   to 
  be 
  in 
  consequence 
  of 
  the 
  greater 
  precipitation 
  in 
  this 
  region, 
  

   • 
  Greenland, 
  though 
  so 
  enveloped 
  in 
  ice, 
  having, 
  according 
  to 
  Kink, 
  an 
  

  

  

  