﻿Hay 
  — 
  Ages 
  of 
  Pleistocene 
  Deposits. 
  363 
  

  

  and 
  along 
  the 
  south 
  Atlantic 
  coast 
  after 
  the 
  passing 
  away 
  

   of 
  the 
  last 
  glacial 
  stage, 
  there 
  appears 
  to 
  be 
  no 
  good 
  

   reason 
  for 
  supposing 
  that 
  they 
  would 
  not 
  have 
  moved 
  

   northward 
  and 
  reoccupied 
  their 
  ancestral 
  hunting 
  

   grounds. 
  All 
  of 
  these 
  had 
  once 
  lived 
  in 
  the 
  regions 
  of 
  

   Iowa, 
  Nebraska, 
  Kansas, 
  and 
  most 
  of 
  them 
  as 
  far 
  east 
  

   as 
  New 
  Jersey. 
  Many 
  species, 
  large, 
  medium-sized 
  and 
  

   minute, 
  did 
  return 
  to 
  the 
  newly 
  opened 
  fields. 
  Equus 
  

   complicatus 
  had 
  more 
  than 
  once 
  been 
  driven 
  from 
  the 
  gla- 
  

   ciated 
  region 
  ; 
  but 
  each 
  time 
  it 
  returned 
  ; 
  and 
  its 
  remains 
  

   have 
  been 
  found 
  in 
  deposits 
  overlying 
  Illinoian 
  drift. 
  

   Is 
  there 
  any 
  reason 
  to 
  be 
  suggested 
  why, 
  after 
  the 
  Wis- 
  

   consin 
  glacial 
  stage, 
  this 
  horse 
  and 
  Bison 
  latifrons 
  pre- 
  

   ferred 
  to 
  remain 
  and 
  perish 
  on 
  the 
  sandy 
  plains 
  of 
  

   Florida 
  when 
  they 
  might 
  have 
  reoccupied 
  their 
  old 
  

   ranges, 
  which 
  furnished 
  as 
  fine 
  grazing 
  lands 
  as 
  have 
  

   existed! 
  It 
  cannot 
  be 
  said 
  that 
  the 
  climate 
  in 
  the 
  

   northern 
  States 
  was 
  unfavorable, 
  for 
  we 
  cannot 
  doubt 
  

   that, 
  as 
  the 
  glacier 
  began 
  to 
  withdraw, 
  the 
  climate 
  grew 
  

   milder 
  ; 
  and 
  there 
  are 
  evidences 
  in 
  both 
  the 
  animal 
  and 
  

   the 
  vegetable 
  kingdoms 
  that 
  the 
  climate 
  was 
  for 
  some 
  

   time 
  warmer 
  than 
  it 
  is 
  to-day. 
  The 
  writer 
  has 
  elsewhere 
  

   noted 
  the 
  former 
  existence 
  of 
  peccaries 
  along 
  the 
  south 
  

   shore 
  of 
  Lake 
  Ontario 
  and 
  in 
  Michigan; 
  also 
  the 
  pres- 
  

   ence 
  of 
  Megalonyx 
  as 
  far 
  north 
  as 
  Minneapolis. 
  In 
  1915 
  

   Dr. 
  H. 
  L. 
  Shinier 
  3 
  printed 
  a 
  list 
  of 
  mollusks 
  which 
  had 
  

   been 
  found 
  in 
  post-glacial 
  deposits 
  at 
  Boston. 
  Of 
  about 
  

   60 
  species, 
  approximately 
  one-half 
  no 
  longer 
  live 
  north 
  

   of 
  Cape 
  Cod, 
  or 
  only 
  rarely 
  in 
  sheltered 
  areas. 
  He 
  says 
  

   that 
  the 
  record 
  is 
  of 
  primary 
  interest 
  because 
  of 
  the 
  evi- 
  

   dence 
  it 
  furnishes 
  as 
  to 
  a 
  warmer 
  period 
  after 
  the 
  retire- 
  

   ment 
  of 
  the 
  glacier. 
  

  

  In 
  the 
  same 
  volume 
  of 
  this 
  Journal, 
  on 
  pages 
  17, 
  18, 
  

   Barrell 
  quotes 
  a 
  letter 
  written 
  by 
  Fernald 
  regarding 
  

   certain 
  plants 
  which 
  had 
  been 
  found 
  on 
  Prince 
  Edward 
  

   Island, 
  the 
  Magdalen 
  Islands, 
  and 
  in 
  Newfoundland, 
  but 
  

   whose 
  relationships 
  are 
  with 
  plants 
  found 
  in 
  the 
  pine- 
  

   barrens 
  of 
  New 
  Jersey. 
  "Thirty-five 
  per 
  cent 
  of 
  the 
  

   plants 
  of 
  Newfoundland 
  are 
  southwestern 
  types, 
  and 
  7-7 
  

   per 
  cent 
  of 
  these 
  are 
  plants 
  characteristic 
  of 
  the 
  coastal 
  

   plain 
  of 
  New 
  Jersey 
  and 
  the 
  South' 
  ' 
  (Barrell, 
  p. 
  16). 
  

   The 
  reader 
  may 
  consult 
  with 
  regard 
  to 
  this 
  matter 
  also 
  

   J. 
  W. 
  Dawson's 
  Canadian 
  Ice 
  Age, 
  pages 
  140 
  to 
  144. 
  

  

  3 
  This 
  Journal 
  (4), 
  vol. 
  40, 
  pp. 
  437-442. 
  

  

  