﻿576 
  MK. 
  G. 
  W. 
  LAMPLTJGH 
  02s 
  T 
  THE 
  

  

  dealt 
  with 
  therein 
  *, 
  and 
  the 
  following 
  are 
  the 
  chief 
  additions 
  to 
  

   the 
  literature 
  of 
  the 
  subject 
  since 
  that 
  time 
  known 
  to 
  me 
  : 
  — 
  

  

  1869. 
  Metee, 
  C. 
  J. 
  A. 
  " 
  Note 
  on 
  the 
  passage 
  of 
  the 
  Red 
  Chalk 
  

   of 
  Speeton 
  into 
  an 
  underlying 
  Clay-bed/' 
  Geol. 
  Mag. 
  

   vol. 
  vi. 
  p. 
  13. 
  

  

  1875. 
  Professor 
  J. 
  Phillips. 
  Geology 
  of 
  Yorkshire, 
  3rd 
  ed. 
  

   pt. 
  i. 
  (In 
  this 
  edition 
  Prof. 
  Phillips 
  gave 
  the 
  result 
  

   of 
  his 
  later 
  researches 
  at 
  Speeton 
  ; 
  and 
  in 
  a 
  list 
  of 
  York- 
  

   shire 
  fossils, 
  to 
  be 
  found 
  in 
  the 
  same 
  volume, 
  several 
  

   species 
  are 
  recorded 
  for 
  the 
  first 
  time 
  from 
  the 
  Speeton 
  

   Clay.) 
  

  

  1888. 
  Explications 
  des 
  Excursions 
  ; 
  Congres 
  Geologique 
  Inter- 
  

   national, 
  p. 
  152. 
  (In 
  my 
  description 
  of 
  the 
  Speeton 
  

   section 
  in 
  this 
  guide-book, 
  I 
  briefly 
  mention 
  one 
  or 
  two 
  

   of 
  the 
  points 
  dealt 
  with 
  in 
  this 
  paper.) 
  

  

  Besides 
  the 
  above, 
  there 
  have 
  been 
  various 
  incidental 
  discussions 
  

   of 
  the 
  section 
  in 
  different 
  articles 
  and 
  memoirs, 
  but 
  I 
  am 
  not 
  aware 
  

   that 
  in 
  any 
  of 
  these 
  have 
  any 
  new 
  observations 
  been 
  recorded 
  f 
  . 
  

  

  Peesent 
  State 
  of 
  the 
  Speeton 
  Cliff-Section. 
  

  

  A 
  few 
  notes 
  comparing 
  the 
  present 
  state 
  of 
  the 
  cliff 
  with 
  its 
  

   condition 
  twenty 
  years 
  ago 
  will, 
  I 
  think, 
  be 
  found 
  useful 
  to 
  anyone 
  

   visiting 
  the 
  section 
  or 
  studying 
  its 
  literature. 
  

  

  The 
  higher 
  part 
  of 
  the 
  cliff 
  itself 
  has, 
  as 
  Judd 
  predicted, 
  become 
  

   more 
  and 
  more 
  obscure, 
  and 
  the 
  only 
  portions 
  in 
  which 
  any 
  workable 
  

   section 
  may 
  now 
  be 
  observed 
  are 
  the 
  ridges 
  lying 
  to 
  the 
  north 
  and 
  

   to 
  the 
  south 
  of 
  Black 
  Cliff. 
  

  

  The 
  workings 
  that 
  were 
  once 
  carried 
  on 
  for 
  the 
  extraction 
  of 
  the 
  

   "cement-stones" 
  in 
  one 
  part 
  of 
  the 
  cliff, 
  and 
  for 
  " 
  coprolites 
  " 
  in 
  

   another, 
  have 
  long 
  since 
  been 
  abandoned 
  and 
  obliterated 
  — 
  the 
  latter 
  

   having 
  been 
  suddenly 
  and 
  completely 
  closed 
  in 
  1869 
  by 
  a 
  great 
  

   landslip, 
  which, 
  had 
  it 
  happened 
  in 
  the 
  daytime, 
  would 
  have 
  entombed 
  

   the 
  miners 
  as 
  it 
  has 
  done 
  their 
  tools. 
  

  

  With 
  regard 
  to 
  the 
  foot 
  of 
  the 
  cliff, 
  that 
  portion 
  lying 
  to 
  the 
  

   southward, 
  between 
  Speeton 
  Beck 
  and 
  the 
  chalk 
  precipices, 
  has 
  pro- 
  

   bably 
  undergone 
  little 
  change, 
  or 
  it 
  may 
  even 
  be 
  better 
  exposed 
  than 
  

   formerly, 
  since 
  clear 
  though 
  shallow 
  sections 
  of 
  the 
  clays 
  may 
  

   generally 
  now 
  be 
  seen 
  here 
  under 
  the 
  slips 
  of 
  chalk 
  and 
  drift. 
  

  

  Along 
  the 
  foot 
  of 
  Black 
  Cliff, 
  also, 
  there 
  have 
  been 
  only 
  slight 
  

   changes, 
  and 
  the 
  heavy 
  slip 
  of 
  the 
  clays 
  mapped 
  by 
  Judd 
  still 
  persists, 
  

   though 
  the 
  sea 
  is 
  gradually 
  removing 
  it, 
  and 
  sometimes 
  reveals 
  in 
  it 
  

   an 
  excellent 
  section. 
  

  

  Middle 
  Cliff 
  seems 
  to 
  have 
  altered 
  for 
  the 
  better, 
  through 
  the 
  

   breaking 
  away 
  of 
  some 
  of 
  the 
  slipped 
  drift 
  which 
  encumbers 
  it, 
  so 
  

   that 
  along 
  its 
  base 
  there 
  is 
  generally 
  now 
  a 
  continuous 
  section 
  of 
  

  

  * 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxiv. 
  pp. 
  219 
  & 
  220. 
  

  

  + 
  For 
  some 
  account 
  of 
  two 
  important 
  additions 
  to 
  the 
  literature 
  of 
  the 
  Speeton 
  

   Clays 
  since 
  the 
  above 
  was 
  written, 
  see 
  "note" 
  at 
  the 
  end 
  of 
  this 
  paper, 
  p. 
  608. 
  

  

  