﻿448 
  

  

  MR. 
  S. 
  S. 
  BUCKMAtf 
  ON 
  THE 
  

  

  beds) 
  is 
  very 
  much 
  thicker 
  than 
  before. 
  It 
  is 
  not 
  known 
  at 
  present 
  

   if 
  any 
  higher 
  horizon 
  is 
  included 
  in 
  the 
  upper 
  part 
  of 
  the 
  Sands 
  ; 
  

   but 
  it 
  is 
  possible. 
  

  

  V. 
  Section 
  exposed 
  in 
  Greenivay 
  Lane 
  and 
  Lyncombe 
  cutting, 
  near 
  

   Bath 
  ; 
  Somerset 
  and 
  Dorset 
  Railway. 
  (14 
  miles 
  from 
  Sec- 
  

   tion 
  IV.) 
  

  

  Inferior 
  

   Oolite. 
  

  

  Midford 
  

   Sands. 
  

  

  Junction 
  

   beds. 
  

  

  Upper 
  Lias. 
  

  

  Parkinsoni- 
  

  

  zone. 
  

   Uncertain. 
  

  

  Dispansum- 
  

   beds. 
  

  

  Striatulum- 
  

   beds. 
  

  

  Commune- 
  

   zone. 
  

  

  Falcifcrum- 
  

   zone. 
  

  

  1. 
  Yellowish 
  oolitic 
  limestone. 
  Tereb. 
  glubata, 
  

  

  Rhyuch. 
  spinosa, 
  &c. 
  

  

  2. 
  Yellow 
  micaceous 
  sands 
  not 
  well 
  exposed, 
  

   about 
  

  

  3. 
  Yellow 
  sands 
  with 
  about 
  a 
  dozen 
  lines 
  of 
  

   "Sand-burrs." 
  From 
  fallen 
  " 
  Sand- 
  burrs 
  " 
  

   Gramm. 
  fallaciosum 
  was 
  obtained 
  

  

  4. 
  Yellowish-brown 
  stone, 
  with 
  very 
  numerous 
  

   lighter-coloured 
  oolitic 
  grains 
  which 
  fall 
  out 
  

   and 
  leave 
  the 
  stone 
  pitted. 
  Gramm 
  striatulum. 
  

   This 
  is 
  firmly 
  cemented 
  without 
  a 
  break 
  on 
  to 
  

  

  5. 
  Yellowish 
  stone 
  with 
  the 
  oolitic 
  grains 
  less 
  nu- 
  

  

  merous, 
  and 
  therefore 
  appearing 
  of 
  a 
  closer 
  tex- 
  

   ture. 
  Hild. 
  bifrons, 
  Dactyl. 
  Holandrei, 
  Dactyl. 
  

   crassum, 
  Waldheimia 
  LycetH, 
  RJiynchnnella, 
  sp. 
  

   This 
  is 
  firmly 
  cemented 
  without 
  a 
  break 
  on 
  to 
  

  

  6. 
  Close-grained, 
  smooth-feeling, 
  greyish-blue 
  

   stone, 
  without 
  any 
  trace 
  of 
  grains 
  as 
  in 
  the 
  bed 
  

   above. 
  Harpoceras 
  falciferum 
  

  

  7. 
  Greyish-blue 
  clay 
  

  

  8. 
  Close-grained, 
  greyish, 
  mottled 
  stone 
  

  

  9. 
  G-reyish-blue 
  clay 
  

  

  ft. 
  

  

  65 
  

  

  35 
  

  

  10 
  

   6 
  

   4 
  

  

  The 
  above 
  section 
  is 
  superior, 
  for 
  our 
  purpose, 
  to 
  the 
  one 
  exhibited 
  

   at 
  Midford. 
  Considering 
  that 
  it 
  is 
  only 
  about 
  a 
  mile 
  and 
  a 
  half 
  

   from 
  Midford 
  it 
  may 
  be 
  taken 
  as 
  a 
  thoroughly 
  representative 
  Section 
  

   of 
  Midford 
  Sands 
  joining 
  Lias 
  Clay. 
  

  

  The 
  next 
  Section, 
  that 
  of 
  the 
  classic 
  locality 
  of 
  Ham 
  Hill, 
  in 
  

   Somerset, 
  is 
  very 
  interesting 
  from 
  a 
  geological 
  point 
  of 
  view, 
  but 
  

   wholly 
  disappointing 
  paleeontologically. 
  The 
  large 
  mass 
  of 
  free- 
  

   stone 
  and 
  sandstone 
  (both 
  composed 
  of 
  comminuted 
  and 
  crushed 
  

   shells, 
  among 
  which 
  Uhynch. 
  cynoce-phala 
  or 
  (?) 
  Beneckei 
  * 
  occurs), 
  

   preceded 
  and 
  followed 
  by 
  yellow 
  micaceous 
  sands, 
  is, 
  without 
  

   much 
  doubt, 
  on 
  the 
  same 
  horizon 
  as 
  the 
  similarly-composed 
  

   band 
  at 
  Stoford, 
  and 
  probably 
  only 
  an 
  altered 
  condition 
  of 
  the 
  

   upper 
  part 
  of 
  the 
  Yeovil 
  Sands 
  as 
  seen 
  at 
  Babj'lon 
  Hill. 
  My 
  

   father 
  was 
  the 
  first 
  to 
  point 
  this 
  out 
  t 
  ; 
  and 
  the 
  opinion 
  has 
  

   been 
  confirmed 
  by 
  H. 
  B. 
  Woodward 
  t. 
  Therefore 
  the 
  Geological 
  

   Survey 
  has 
  erred 
  in 
  mapping 
  Ham 
  Hill 
  as 
  different 
  from 
  the 
  " 
  Mid- 
  

  

  * 
  See 
  Davidson, 
  "Brack.," 
  Pal. 
  Soc, 
  Appendix 
  to 
  Supp. 
  pi. 
  xx. 
  figs. 
  8, 
  9, 
  10 
  

  

  (1884). 
  

  

  t 
  "Cephalopoda-bed 
  and 
  Oolite-Sands," 
  Extract 
  Proc. 
  Somerset 
  Arch. 
  Soc. 
  

   vol. 
  xx. 
  p. 
  13 
  (1874). 
  " 
  The 
  Ceph. 
  beds 
  of 
  Gloucester, 
  Dorset, 
  and 
  Somerset," 
  

   Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol.xxxiii. 
  p 
  5 
  ( 
  1876). 
  

  

  t 
  " 
  Note 
  on 
  the 
  Ham 
  Hill 
  Stone," 
  Proc. 
  Bath 
  Ant. 
  Field 
  Club, 
  p. 
  184 
  (1887). 
  

  

  