﻿1864.] 
  dawkijsts 
  — 
  rh.etic 
  beds 
  and 
  white 
  lias. 
  403 
  

  

  with 
  the 
  series, 
  of 
  which 
  the 
  deep 
  sunken 
  road, 
  " 
  Snake 
  Lane," 
  

   leading 
  from 
  Paniborough 
  to 
  Wedmore, 
  affords 
  an 
  excellent 
  section. 
  

  

  Section 
  at 
  Snake 
  Lane. 
  

  

  A. 
  Deep-red 
  marls. 
  Thickness, 
  

  

  B. 
  Grey 
  marls. 
  inches. 
  

  

  C. 
  Fine-grained 
  friable 
  grey 
  marlstone. 
  

  

  1. 
  Grey 
  shale 
  "race" 
  48 
  

  

  2. 
  Dark 
  shale 
  " 
  race 
  " 
  48 
  

  

  3. 
  A 
  hard 
  shelly 
  limestone 
  of 
  five 
  or 
  six 
  irregular 
  beds: 
  " 
  Wedm;re 
  

  

  stone" 
  — 
  Avicida 
  contorta 
  36 
  

  

  4. 
  Grey-ferruginous 
  and 
  dark 
  marls, 
  sandy 
  at 
  the 
  top, 
  and 
  highly 
  

  

  charged 
  with 
  carbonaceous 
  matter 
  48 
  

  

  5. 
  Compact 
  blue 
  limestone 
  — 
  Cardium 
  Rhceticum, 
  Acrodus 
  minimus 
  . 
  4 
  

  

  6. 
  Grey 
  marl 
  6 
  

  

  7. 
  Compact 
  grey 
  limestone 
  , 
  3 
  

  

  8. 
  Grey 
  marl 
  5 
  

  

  9. 
  Compact 
  grey 
  micaceous 
  limestone 
  1 
  

  

  10. 
  Dark 
  and 
  ferruginous 
  shale, 
  passing 
  into 
  a 
  sandy, 
  micaceous, 
  lami- 
  

  

  nated 
  marl 
  48 
  

  

  11. 
  Irregularly 
  bedded 
  sandstone 
  — 
  Acrodus 
  minimus 
  14 
  

  

  12. 
  Iron-grey 
  and 
  ferruginous 
  marls 
  ? 
  

  

  At 
  this 
  point 
  the 
  section 
  is 
  obscnred 
  ; 
  but 
  at 
  a 
  distance 
  of 
  a 
  few 
  

   yards, 
  in 
  a 
  field, 
  the 
  White 
  Lias 
  presents 
  the 
  following 
  section 
  : 
  — 
  

  

  Thickness, 
  

   inches. 
  

  

  1. 
  Hard 
  pinkish-grey 
  compact 
  lias, 
  irregular 
  at 
  the 
  top 
  (old 
  sea 
  -bottom) 
  5 
  

  

  2. 
  Marly 
  grey 
  lias, 
  soft 
  and 
  irregular: 
  Modiola 
  minima, 
  Cardium 
  

  

  Rhceticum, 
  Serpulce, 
  Lima 
  (sp.), 
  Ostrea 
  interstriata 
  5 
  

  

  3. 
  Two 
  beds 
  of 
  compact 
  limestone, 
  blue 
  inside, 
  grey 
  on 
  exposed 
  faces 
  

  

  of 
  joints 
  : 
  Ostrea 
  liassica, 
  Modiola 
  minima, 
  Cardium 
  Rhceticum, 
  

   Astrcea 
  9 
  

  

  4. 
  Irregular 
  grey 
  marly 
  stone, 
  with 
  Modiola 
  minima 
  and 
  Cardium 
  

  

  Rhceticum 
  ? 
  

  

  5. 
  Hard 
  grey 
  lias 
  7 
  

  

  6. 
  Grey 
  lias, 
  hard 
  and 
  compact 
  2 
  

  

  7. 
  Light 
  grey 
  marly 
  stone 
  36 
  

  

  The 
  slight 
  dip 
  of 
  the 
  beds 
  to 
  the 
  south-west, 
  coupled 
  with 
  the 
  few 
  

   yards 
  intervening 
  between 
  the 
  two 
  sections, 
  proves 
  that 
  there 
  is 
  a 
  

   very 
  small 
  gap 
  between 
  them. 
  

  

  Further 
  to 
  the 
  west, 
  between 
  Sand 
  and 
  Wedmore, 
  the 
  Avicula 
  

   contorta 
  series, 
  which 
  is 
  nearly 
  horizontal, 
  forms 
  a 
  spread 
  ; 
  and 
  the 
  

   hard 
  crystalline 
  Wedmore 
  Limestone 
  is 
  dug 
  in 
  the 
  fields 
  for 
  road- 
  

   material 
  and 
  building-purposes. 
  Near 
  Sand, 
  and 
  close 
  to 
  the 
  wind- 
  

   mill, 
  the 
  limestone, 
  3 
  feet 
  in 
  thickness, 
  passes 
  below 
  into 
  a 
  greenish 
  

   calcareous 
  shale, 
  full 
  of 
  Avicula 
  contorta. 
  It 
  contains 
  vertebra? 
  of 
  

   an 
  undetermined 
  Fish, 
  and 
  remains 
  of 
  Acrodus 
  minimus, 
  A. 
  acutus, 
  

   Sargodon 
  Tomicus, 
  Saurichihys 
  apicalis, 
  Cardium 
  Rhceticum, 
  and 
  

   Avicula 
  contorta, 
  and 
  rests 
  upon 
  a 
  dark 
  clay, 
  as 
  in 
  Snake 
  Lane. 
  At 
  

   the 
  base 
  of 
  the 
  southern 
  scarp, 
  also, 
  near 
  Mudgely, 
  the 
  beds 
  are 
  

   seen 
  with 
  the 
  usual 
  fossils. 
  

  

  To 
  the 
  east, 
  near 
  Wells, 
  the 
  summit 
  of 
  the 
  small 
  outlier 
  of 
  Pen 
  

   Knowle 
  is 
  composed 
  of 
  AVhite 
  Lias. 
  In 
  exploring, 
  in 
  1862, 
  some 
  

   of 
  those 
  equivocal 
  remains 
  of 
  doubtful 
  origin, 
  use, 
  and 
  antiquity, 
  

   which 
  are 
  usually 
  termed 
  " 
  hut- 
  circles," 
  I 
  exposed 
  a 
  section 
  of 
  the 
  

  

  