﻿242 
  H. 
  KEEPING 
  ON 
  SOME 
  SECTIONS 
  

  

  quadratus, 
  Rom., 
  Belemnites, 
  sp., 
  Ammonites 
  noricus, 
  Schl., 
  A. 
  pli- 
  

   comphalus, 
  Sow., 
  and 
  several 
  other 
  species 
  ; 
  Pleurotomaria 
  neoco- 
  

   miensis, 
  d'Orb., 
  Pleurotomaria, 
  sp. 
  ; 
  species 
  of 
  Trochus, 
  Turbo, 
  

   Neritopsis, 
  and 
  Emarg 
  inula 
  ; 
  Pileopsis 
  neocomiensis, 
  Gardn., 
  Ostrea 
  

   frons, 
  Park., 
  var. 
  macroptera, 
  Sow., 
  Exogyra 
  sinuata, 
  Sow. 
  ; 
  E. 
  Tom- 
  

   beckiana, 
  d'Orb. 
  ; 
  Pecten 
  ductus, 
  Sow. 
  ; 
  P. 
  striato-punctatus, 
  Horn. 
  ; 
  

   Pecten, 
  sp. 
  ; 
  Avicula 
  macroptera, 
  Rom. 
  ; 
  Lima 
  Tombeckiana, 
  d'Orb. 
  ; 
  

   Lima, 
  sp. 
  ; 
  Trigonia 
  ingens, 
  Lye. 
  ; 
  Astarte 
  robusta, 
  Lye. 
  ; 
  species 
  of 
  

   Modiola, 
  Cucullnea, 
  Tellina, 
  Astarte, 
  Mactra 
  (?), 
  Sphcera, 
  Cyprina, 
  

   Myacites, 
  Pholadomya, 
  and 
  Sowerbya 
  ; 
  Serpula 
  lophiodes, 
  Goldf. 
  ; 
  

   S. 
  gordialis, 
  Schl. 
  ; 
  Nucleolites, 
  sp.* 
  

  

  Above 
  the 
  Ironstone 
  are 
  seen 
  at 
  least 
  18 
  feet 
  of 
  grey 
  clay 
  (fig. 
  1, 
  c), 
  

   with 
  scattered 
  nodules 
  containing 
  macrurous 
  Crustacea 
  {Meyeria 
  

   magna). 
  These 
  clays 
  are 
  fairly 
  fossiliferous 
  ; 
  but 
  dry 
  weather 
  is 
  

   required 
  for 
  collecting 
  from 
  them. 
  

  

  JSear 
  Donnington 
  station 
  is 
  a 
  brickyard 
  exhibiting 
  similar 
  clay, 
  

   30 
  feet 
  in 
  thickness, 
  containing 
  Belemnites 
  lateralis, 
  B. 
  jaculum, 
  

   Exogyra 
  sinuata, 
  Meyeria 
  magna, 
  and 
  Serpula. 
  This 
  greater 
  thick- 
  

   ness 
  of 
  clay 
  seems 
  counterbalanced 
  by 
  an 
  absence 
  of 
  limestone 
  here. 
  

  

  I 
  regret 
  that 
  my 
  notes 
  are 
  imperfect 
  as 
  to 
  the 
  limestone 
  above 
  

   (fig. 
  1, 
  d) 
  ; 
  and 
  details 
  as 
  to 
  the 
  precise 
  thickness 
  of 
  the 
  clays 
  inter- 
  

   bedded 
  with 
  the 
  Grey 
  Limestone 
  are 
  wanting; 
  but, 
  from 
  a 
  barometric 
  

   observation 
  made 
  during 
  the 
  last 
  visit, 
  I 
  conclude 
  that 
  between 
  the 
  

   last 
  bed 
  and 
  the 
  top 
  of 
  the 
  Grey 
  Limestone 
  35 
  feet 
  of 
  beds 
  inter- 
  

   vened, 
  and 
  above 
  the 
  limestone 
  were 
  about 
  15-25 
  feet 
  of 
  the 
  un- 
  

   fossiliferous 
  Upper 
  Sands 
  (e). 
  In 
  former 
  years 
  these 
  upper 
  beds 
  

   were 
  much 
  better 
  exposed 
  than 
  they 
  are 
  at 
  present 
  at 
  Claxby. 
  

  

  The 
  above 
  section 
  gives 
  a 
  thickness 
  of 
  the 
  Neocomian 
  here 
  of 
  

   113 
  feet. 
  

  

  List 
  of 
  Fossils 
  from 
  the 
  Clay 
  and 
  Limestone. 
  

  

  Belemnites 
  jaculum, 
  Ph. 
  ; 
  B. 
  lateralis, 
  Ph. 
  ; 
  Belemnites, 
  sp. 
  ; 
  Am- 
  

   monites 
  Carteroni, 
  d'Orb., 
  var. 
  ; 
  Crioceras 
  asterianum, 
  d'Orb., 
  var. 
  ; 
  

   species 
  of 
  Rostellaria, 
  Scalaria, 
  Action 
  ; 
  Pecten 
  cinctus, 
  Sow. 
  ; 
  P. 
  

   orbicularis, 
  Sow. 
  ; 
  Pecten, 
  sp. 
  ; 
  Avicula 
  or 
  Inoceramus 
  ; 
  Perna 
  Mul- 
  

   leti, 
  Desh. 
  ; 
  P. 
  Eicordiana, 
  d'Orb. 
  ; 
  Lima 
  longa, 
  Rom., 
  and 
  

   several 
  others 
  ; 
  Trigonia 
  Robinaldina, 
  d'Orb. 
  ; 
  T. 
  Keepingi, 
  Lye. 
  ; 
  

   T. 
  alceformis 
  ; 
  Trigonia, 
  sp. 
  ; 
  Cyprina 
  angulata. 
  Sow. 
  ; 
  Pholadomya 
  

   Bauliniana, 
  d'Orb. 
  ; 
  Pholadomya, 
  sp. 
  ; 
  species 
  of 
  Area, 
  Nucula, 
  As- 
  

   tarte, 
  Myacites, 
  Panopoea, 
  &c. 
  ; 
  Holaster, 
  sp. 
  ; 
  Meyeria 
  magna. 
  

  

  So-called 
  red 
  chalk 
  forms 
  the 
  next 
  succeeding 
  bed. 
  

  

  * 
  {Note 
  added 
  on 
  proof 
  .) 
  The 
  following 
  species 
  of 
  Brachiopoda 
  were 
  col- 
  

   lected 
  from 
  the 
  Ironstone, 
  but 
  were 
  mislaid 
  and 
  forgotten 
  for 
  a 
  time 
  : 
  — 
  

  

  Waldheimia 
  tamarindus, 
  Sow., 
  var. 
  

   tilbyensis, 
  Dav. 
  

  

  Walkeri, 
  Dav. 
  

  

  faba, 
  d'Orb., 
  non 
  Sow. 
  

  

  hippopus, 
  Rom.,vax. 
  tilbyensis. 
  

  

  Terebratula 
  sella, 
  Sow. 
  

   depressa, 
  var. 
  cyrta. 
  

  

  Terebratula 
  depressa, 
  Lam. 
  

  

  praelonga, 
  Sow. 
  

  

  Rhynckonella 
  multiformis, 
  Rom. 
  

  

  Walkeri, 
  Dav. 
  

  

  lineolata, 
  Ph. 
  ? 
  

  

  speetonensis, 
  Dav. 
  

  

  