﻿8o 
  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  research 
  and 
  collecting; 
  but 
  for 
  the 
  researches 
  of 
  Prof. 
  Tate, 
  

   Edward 
  Forbes, 
  Dr. 
  Bryce, 
  Prof. 
  Geikie, 
  and 
  Prof. 
  Judd 
  we 
  should 
  

   have 
  known 
  little 
  or 
  nothing 
  of 
  the 
  Jurassic 
  fauna 
  of 
  the 
  Western 
  

   Isles 
  or 
  the 
  eastern 
  shores 
  of 
  Scotland*. 
  

  

  Probably 
  two 
  of 
  the 
  most 
  painstaking 
  and 
  elaborate 
  papers 
  of 
  the 
  

   past 
  twenty 
  years 
  have 
  been 
  written 
  by 
  W. 
  H. 
  Hudleston, 
  Esq., 
  

   M.A., 
  F.G.S. 
  The 
  first 
  part 
  of 
  the 
  first 
  memoir 
  appeared 
  in 
  August 
  

   1874, 
  the 
  second 
  in 
  January 
  1876, 
  and 
  the 
  third 
  in 
  October 
  1878, 
  

   in 
  the 
  ' 
  Proceedings 
  of 
  the 
  Geologists' 
  Association.' 
  The 
  title 
  of 
  Mr. 
  

   Hudleston's 
  memoir 
  is 
  " 
  The 
  Yorkshire 
  Oolites 
  ; 
  " 
  and 
  no 
  prior 
  de- 
  

   scription 
  of 
  the 
  geology 
  and 
  palaeontology 
  of 
  Yorkshire 
  can 
  compare 
  

   with 
  it 
  for 
  the 
  philosophical 
  way 
  in 
  which 
  the 
  author 
  has 
  treated 
  

   this 
  most 
  difficult 
  problem 
  in 
  the 
  history 
  of 
  the 
  lower 
  Secondary 
  

   rocks 
  of 
  Britain. 
  

  

  Mr. 
  Hudleston's 
  second 
  memoir 
  appeared 
  in 
  the 
  'Geological 
  

   Magazine 
  ' 
  for 
  the 
  months 
  of 
  June, 
  July, 
  September, 
  November, 
  and 
  

   December 
  1880 
  ; 
  it 
  is 
  entitled 
  " 
  Contributions 
  to 
  the 
  Palaeontology 
  

   of 
  the 
  Yorkshire 
  Oolites," 
  and 
  is 
  a 
  companion 
  memoir 
  to 
  the 
  one 
  

   above-cited. 
  I 
  commend 
  these 
  two 
  able 
  productions 
  to 
  every 
  

   student 
  of 
  Jurassic 
  geology 
  in 
  Europe; 
  without 
  them 
  our 
  know- 
  

   ledge 
  of 
  the 
  Oolitic 
  rocks 
  of 
  Yorkshire 
  would 
  still 
  be 
  very 
  imperfect. 
  

   Louis 
  Hunton, 
  Phillips, 
  Williamson, 
  Wright, 
  Leckenby, 
  Lycett, 
  Tate, 
  

   and 
  Blake 
  have, 
  however, 
  enriched 
  our 
  knowledge 
  of 
  the 
  geology 
  

   of 
  this 
  great 
  county 
  ; 
  and 
  the 
  geological 
  maps 
  of 
  the 
  eastern 
  division 
  

   constructed 
  by 
  Mr. 
  Pox 
  Strangways, 
  both 
  on 
  the 
  6-inch 
  and 
  1-inch 
  

   scale, 
  are 
  works 
  of 
  art, 
  in 
  the 
  department 
  of 
  geological 
  surveying, 
  

   such 
  as 
  have 
  seldom 
  been 
  attempted 
  and 
  rarely 
  excelled. 
  

  

  Mr. 
  Hudleston, 
  in 
  his 
  first 
  part, 
  divides 
  and 
  treats 
  his 
  subject 
  

   under 
  three 
  heads 
  : 
  — 
  

  

  1. 
  The 
  Physical 
  Geography 
  of 
  the 
  District. 
  

  

  2. 
  The 
  Region 
  of 
  the 
  Lower 
  Oolites. 
  

  

  3. 
  The 
  Lower 
  Oolites. 
  

  

  This 
  last 
  division 
  he 
  treats 
  under 
  four 
  heads 
  : 
  — 
  

  

  1. 
  The 
  Dogger. 
  

  

  2. 
  The 
  Millepore 
  bed. 
  

  

  3. 
  The 
  Scarborough 
  or 
  Grey 
  Limestone. 
  

  

  4. 
  The 
  Cornbrash. 
  

  

  Below 
  the 
  Dogger 
  ranges 
  the 
  uppermost 
  division 
  of 
  the 
  Upper 
  

   Lias, 
  or 
  the 
  transition 
  Jurassic 
  sands, 
  viz. 
  (1) 
  " 
  The 
  Yellow 
  sand 
  

   series" 
  about 
  20 
  feet 
  thick; 
  (2) 
  below 
  these 
  the 
  well-known 
  

   " 
  Grey 
  sands 
  " 
  which 
  form 
  so 
  conspicuous 
  a 
  platform 
  at 
  low 
  

   water 
  ; 
  and 
  (3) 
  at 
  the 
  base 
  the 
  Am.-striatulus 
  beds, 
  which 
  shade 
  

   into 
  the 
  Grey 
  sands 
  above 
  : 
  the 
  whole 
  may 
  measure 
  about 
  100 
  

   feet. 
  The 
  Blue 
  Hythe 
  Point 
  section 
  is 
  probably 
  one 
  of 
  the 
  grandest 
  

   and 
  most 
  interesting 
  in 
  its 
  details 
  on 
  the 
  whole 
  coast 
  of 
  York- 
  

   shire 
  ; 
  no 
  one 
  who 
  has 
  not 
  personally 
  examined 
  this, 
  both 
  from 
  

   the 
  bays 
  and 
  in 
  the 
  cliffs, 
  can 
  form 
  any 
  idea 
  of 
  the 
  history 
  of 
  the 
  

  

  * 
  Vide 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  vii. 
  p. 
  104, 
  vol. 
  xiv. 
  p. 
  24, 
  vol. 
  xxix. 
  

   pp. 
  97 
  and 
  339, 
  papers 
  by 
  Edward 
  Forbes, 
  Dr. 
  Wright, 
  Prof. 
  R. 
  Tate, 
  and 
  

   Prof. 
  Judd. 
  

  

  