﻿2 
  J. 
  S. 
  GAEDNES 
  DESCRIPTION 
  AND 
  

  

  ing 
  beds. 
  The 
  literature 
  of 
  the 
  subject 
  is 
  not 
  extensive, 
  no 
  writer 
  

   previous 
  to 
  1827 
  having 
  even 
  referred 
  to 
  the 
  cliffs 
  of 
  Poole 
  Bay, 
  

   although 
  the 
  Bagshot 
  beds 
  of 
  Alum 
  Bay, 
  Studland, 
  and 
  Corfe 
  had 
  

   frequently, 
  since 
  1800, 
  been 
  described 
  or 
  alluded 
  to. 
  

  

  In 
  1827, 
  Sir 
  Charles 
  Lyell 
  noticed 
  them, 
  as 
  stated 
  in 
  my 
  former 
  

   paper*. 
  The 
  Rev. 
  P. 
  B. 
  Brodie 
  seems 
  to 
  have 
  been 
  the 
  first, 
  in 
  1842, 
  

   to. 
  call 
  attention 
  to 
  the 
  occurrence 
  of 
  distinct 
  fossil 
  plants 
  in 
  clay 
  to 
  

   the 
  east 
  of 
  Bournemouthf, 
  referring 
  them 
  to 
  Lauraceae, 
  Amentacese, 
  

   and 
  Characese. 
  MantellJ, 
  in 
  1844, 
  adopted 
  Brodie's 
  views, 
  and 
  

   again, 
  in 
  1847§, 
  mentioned 
  the 
  occurrence 
  at 
  Bournemouth 
  of 
  " 
  the 
  

   same 
  species 
  of 
  plants 
  as 
  those 
  found 
  at 
  Alum 
  Bay." 
  In 
  1847 
  also 
  

   Prof. 
  Prestwich|| 
  connected 
  the 
  Bournemouth 
  and 
  Alum-Bay 
  sands 
  

   and 
  clays 
  with 
  the 
  Bagshot 
  of 
  the 
  London 
  basin 
  ; 
  and 
  in 
  1 
  849 
  ^f 
  he 
  

   determined 
  the 
  position 
  of 
  the 
  Bournemouth 
  leaf 
  -bed 
  to 
  be 
  from 
  300 
  

   to 
  400 
  feet 
  higher 
  in 
  the 
  series 
  than 
  that 
  of 
  Alum 
  Bay. 
  The 
  fossil 
  

   leaves 
  are 
  referred 
  to, 
  but 
  this 
  time 
  from 
  the 
  west 
  of 
  Bournemouth 
  ; 
  

   and, 
  owing 
  to 
  a 
  local 
  patch 
  only 
  having 
  been 
  examined, 
  the 
  species 
  

   were 
  thought 
  to 
  be 
  few. 
  In 
  1851, 
  Mantcll** 
  introduced 
  some 
  notes 
  

   on 
  the 
  "foliage 
  of 
  Dicotyledonous 
  trees," 
  from 
  "thin 
  layers 
  of 
  sandy 
  

   clay 
  in 
  the 
  cliffs 
  west 
  of 
  Bournemouth 
  ;" 
  and 
  in 
  another 
  work 
  ft 
  

   there 
  is 
  a 
  footnote 
  upon 
  the 
  temperate 
  character 
  of 
  the 
  flora 
  com- 
  

   pared 
  with 
  that 
  from 
  Sheppey. 
  In 
  1855 
  Trimmer 
  X 
  t 
  used 
  the 
  term 
  

   •' 
  Bournemouth 
  sands 
  and 
  clays 
  " 
  in 
  correlating 
  them 
  with 
  beds 
  of 
  

   the 
  New 
  Forest. 
  In 
  1856 
  De 
  la 
  Harpe§§ 
  recognized 
  22 
  species 
  of 
  

   plants 
  from 
  Bournemouth, 
  13 
  of 
  which 
  he 
  supposed 
  to 
  be 
  common 
  

   to 
  Alum 
  Bay 
  ; 
  and 
  in 
  1859 
  1| 
  |j 
  we 
  find 
  that 
  Heer 
  was 
  acquainted 
  

   with 
  the 
  fact 
  of 
  the 
  occurrence 
  of 
  leaves 
  there 
  and 
  elsewhere 
  in 
  the 
  

   Hampshire 
  basin. 
  

  

  In 
  1862, 
  in 
  the 
  ' 
  Memoir 
  on 
  the 
  Isle 
  of 
  Wight 
  ' 
  by 
  the 
  Geologi- 
  

   cal 
  Survey, 
  it 
  is 
  said 
  that 
  the 
  fossil 
  floras 
  of 
  Bournemouth, 
  Corfe, 
  

   and 
  Alum 
  Bay 
  are 
  " 
  identical," 
  although 
  we 
  now 
  know 
  that 
  few 
  of 
  

   the 
  characteristic 
  forms 
  are 
  common 
  to 
  these 
  localities. 
  They 
  are 
  

   said 
  to 
  be 
  " 
  on 
  exactly 
  the 
  same 
  horizon 
  " 
  without 
  reference 
  to 
  Prof. 
  

   Prestwich's 
  statement 
  that 
  from 
  300 
  to 
  400 
  feet 
  of 
  strata 
  intervene. 
  

   During 
  1865-69, 
  Mr. 
  W. 
  S. 
  Mitchell 
  was 
  engaged, 
  with 
  the 
  assis- 
  

   tance 
  of 
  a 
  committee 
  appointed 
  by 
  the 
  British 
  Association, 
  in 
  col- 
  

   lecting 
  specimens 
  and 
  information 
  respecting 
  the 
  fossil 
  leaves 
  ; 
  and 
  

   brief 
  notices 
  were 
  read 
  by 
  him 
  at 
  the 
  meeting 
  of 
  the 
  British 
  Asso- 
  

   ciation 
  in 
  1866. 
  His 
  attention 
  was 
  principally 
  directed 
  to 
  the 
  Alum- 
  

   Bay 
  beds. 
  The 
  first 
  illustration 
  of 
  a 
  fossil 
  leaf 
  from 
  Bournemouth 
  

   ever 
  published 
  was 
  of 
  a 
  Gleichenia 
  by 
  Mr.A.Wanklyn 
  l 
  f[^[inl869,or 
  

  

  * 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxxv. 
  p. 
  209. 
  

  

  t 
  Proc. 
  Geol. 
  Soc. 
  vol. 
  iii. 
  p. 
  592. 
  \ 
  Medals 
  of 
  Creation, 
  vol. 
  i. 
  p. 
  193. 
  

  

  § 
  Geol. 
  Isle 
  of 
  Wight, 
  p. 
  169. 
  || 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  iii. 
  

  

  ^[ 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  v. 
  p. 
  43. 
  

  

  ** 
  Geological 
  Excursion 
  round 
  the 
  Isle 
  of 
  Wight, 
  2nd 
  edition. 
  Supplement. 
  

  

  ft 
  Fossils 
  of 
  the 
  British 
  Museum, 
  1851, 
  p. 
  51. 
  

  

  \\ 
  Journ. 
  Roy. 
  Agric. 
  Soc. 
  vol. 
  xvi. 
  p. 
  125. 
  

  

  §§ 
  Bull, 
  dela 
  Societe 
  Vaudoise 
  des 
  Sciences 
  Naturelles, 
  1856. 
  

  

  || 
  || 
  Flora 
  Tertiaria 
  Helvetia?, 
  vol. 
  iii. 
  p. 
  314. 
  

  

  *j[^[ 
  Ann. 
  and 
  Mag. 
  Nat. 
  Hist. 
  ser. 
  4, 
  vol. 
  iii. 
  p. 
  10, 
  pi. 
  i. 
  

  

  