﻿722 
  

  

  SEARLES 
  V. 
  WOOD 
  ON 
  THE 
  NEWER 
  

  

  chalk 
  on 
  the 
  beach, 
  gave 
  rise 
  

   to 
  the 
  irregular 
  seams 
  of 
  loam 
  

   with 
  land-shells, 
  described 
  by 
  

   Prof. 
  Prestwich 
  as 
  overlying 
  

   and 
  intermingled 
  with 
  these 
  

   blocks 
  in 
  the 
  buried 
  beaches 
  of 
  

   Sangatte 
  and 
  Portland 
  ; 
  and 
  

   the 
  pressure 
  of 
  the 
  floes 
  re- 
  

   peated 
  year 
  after 
  year 
  probably 
  

   forced 
  this 
  accumulation 
  more 
  

   thickly 
  against 
  the 
  cliffs, 
  so 
  

   that 
  the 
  upper 
  part 
  turned 
  over 
  

   on 
  itself; 
  or 
  it 
  may 
  have 
  been 
  

   that 
  floes 
  thus 
  driven 
  on 
  to 
  the 
  

   shore 
  became 
  buried 
  under 
  loam 
  

   before 
  they 
  could 
  thaw, 
  and 
  so 
  

   became 
  part 
  of 
  the 
  permanently 
  

   frozen 
  soil, 
  as 
  is 
  the 
  case 
  with 
  

   sheets 
  of 
  ancient 
  flood-water 
  

   still 
  remaining 
  as 
  ice 
  in 
  the 
  

   mudbanks 
  of 
  the 
  Siberian 
  

   rivers 
  from 
  which 
  the 
  Mam- 
  

   moth 
  carcasses 
  have 
  been 
  de- 
  

   tached. 
  If 
  so, 
  the 
  thawing 
  of 
  

   this 
  ice 
  after 
  the 
  glaciation 
  

   passed 
  away 
  would 
  have 
  let 
  

   down 
  the 
  loam 
  &c. 
  accumu- 
  

   lated 
  over 
  these 
  floes 
  and 
  

   around 
  their 
  edges, 
  and 
  so 
  pos- 
  

   sibly 
  have 
  given 
  rise 
  to 
  the 
  

   distorted 
  appearance 
  which 
  the 
  

   accumulation 
  exhibits 
  in 
  Mr. 
  

   Prestwich's 
  cut 
  of 
  Portland 
  

   buried 
  cliff. 
  

  

  By 
  permission 
  of 
  the 
  Coun- 
  

   cil, 
  I 
  also 
  give 
  here 
  the 
  late 
  

   Mr. 
  Trimmer's 
  cut 
  of 
  the 
  brick- 
  

   field 
  at 
  Gaytonthorpe, 
  in 
  West 
  

   Norfolk. 
  

  

  The 
  beds 
  d, 
  e, 
  and 
  /of 
  Mr. 
  

   Trimmer's 
  section 
  are, 
  he 
  con- 
  

   sidered 
  (and 
  as 
  I 
  think 
  also), 
  

   a 
  freshwater 
  continuation, 
  at 
  

   proportionally 
  higher 
  level, 
  of 
  

   the 
  Nar 
  brickearth 
  ; 
  and 
  

   therefore, 
  like 
  the 
  Avisford 
  

   sand, 
  of 
  the 
  age 
  of 
  the 
  Gyrena- 
  

   formation 
  ; 
  and 
  like 
  that 
  they 
  

   are 
  overlain 
  and 
  penetrated 
  by 
  

   the 
  atmospheric 
  formation 
  of 
  

  

  

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