﻿342 
  ME. 
  T. 
  MELLAED 
  EEADE 
  OF 
  THE 
  [Aug. 
  1 
  897, 
  

  

  Immediately 
  west 
  of 
  the 
  West 
  pier 
  at 
  Llandulas, 
  there 
  is 
  a 
  spur 
  

   of 
  extremely 
  fine 
  Boulder 
  Clay 
  standing 
  out 
  from 
  the 
  cliff 
  ; 
  out 
  of 
  

   this 
  I 
  took 
  one 
  granite-pebble. 
  Notwithstanding 
  its 
  freedom 
  from 
  

   stones, 
  the 
  clay 
  is 
  extremely 
  hard 
  where 
  un 
  weathered. 
  

  

  Mechanically 
  analysed, 
  the 
  specimens 
  taken 
  (No. 
  2 
  in 
  the 
  Map) 
  

   yielded 
  80 
  per 
  cent, 
  of 
  clay. 
  Between 
  4 
  and 
  5 
  lbs. 
  troy 
  of 
  the 
  

   Boulder 
  Clay 
  yielded 
  to 
  Mr. 
  Wright 
  the 
  following 
  foraminifera 
  1 
  : 
  — 
  

  

  W. 
  Miliolina 
  seminuhim 
  (Linn.). 
  Very 
  rare. 
  

  

  W. 
  ,, 
  subrotunda 
  (Mont.). 
  Eare. 
  

  

  C.W. 
  Bolivina 
  dilatata. 
  Ess. 
  Rare. 
  

   C.W. 
  ,, 
  plicata, 
  d'Orb. 
  Common. 
  

  

  C.W. 
  Cassidulina 
  crassa, 
  d'Orb. 
  Common. 
  

  

  C.W. 
  Lagena 
  sulcata 
  (W. 
  & 
  J.). 
  Very 
  rare. 
  

   C.W. 
  „ 
  hexagona 
  (Will.), 
  var. 
  Very 
  rare. 
  

  

  C.W. 
  „ 
  Icevigata 
  (Ess.). 
  Eare. 
  

  

  C.W. 
  TJvigerina 
  angulosa, 
  Will. 
  Eare. 
  

  

  C.W. 
  Globigerina 
  bulloides, 
  d'Orb. 
  Common. 
  

  

  PateUina 
  corrugata, 
  Will. 
  Very 
  rare. 
  

  

  C.W. 
  Discorbina 
  rosacea 
  (d'Orb.)- 
  Eare. 
  

   C. 
  „ 
  Bertheloti 
  (d'Orb.). 
  Yery 
  rare. 
  

  

  C. 
  „ 
  Wrightii, 
  Brady. 
  Eare. 
  

  

  C.W. 
  Truncatulina 
  lobatida 
  (W. 
  & 
  J.). 
  Eare. 
  

  

  C.W. 
  Nonionina 
  depressula 
  (W. 
  & 
  J.). 
  Very 
  common. 
  

  

  C.W. 
  Tolystomella 
  striato-punctata 
  (F. 
  & 
  M.). 
  Eare. 
  

   ,, 
  macella 
  (F. 
  & 
  M.). 
  Eare. 
  

  

  One 
  hundred 
  specimens 
  of 
  Nonionina 
  depressula 
  were 
  obtained 
  

   from 
  this 
  gathering, 
  while 
  the 
  other 
  17 
  species 
  numbered 
  in 
  all 
  

   only 
  69 
  specimens. 
  

  

  Farther 
  east, 
  between 
  the 
  East 
  and 
  West 
  piers, 
  the 
  cliffs 
  of 
  drift 
  

   are 
  well 
  developed. 
  A 
  very 
  shelly 
  clay 
  occurs 
  here, 
  and 
  I 
  picked 
  

   out 
  TurriteUa 
  terebra, 
  Trophon 
  truncatus, 
  Cardium 
  edule, 
  etc. 
  The 
  

   lower 
  part 
  of 
  the 
  cliff 
  is 
  grass-grown, 
  but 
  in 
  a 
  good 
  exposure 
  about 
  

   30 
  feet 
  above 
  the 
  shore 
  I 
  took 
  a 
  specimen 
  of 
  the 
  clay 
  (No. 
  3 
  in 
  the 
  

   Map). 
  Mechanically 
  analysed, 
  it 
  yielded 
  35 
  per 
  cent, 
  of 
  clay, 
  

   showing, 
  curiously 
  enough, 
  a 
  smaller 
  proportion 
  of 
  that 
  material 
  

   than 
  the 
  strong 
  clay 
  to 
  the 
  east 
  of 
  Craig 
  already 
  described, 
  but 
  this 
  

   arises 
  from 
  the 
  preponderance 
  of 
  sand-grains 
  having 
  a 
  diameter 
  

   between 
  yj^ 
  and 
  -^ 
  inch, 
  together 
  with 
  the 
  flour 
  of 
  rock 
  deposited 
  

   in 
  the 
  washing. 
  This 
  specimen 
  is 
  interesting 
  from 
  the 
  numerous 
  

   foraminifera 
  it 
  contained. 
  Mr. 
  Wright 
  examined 
  1 
  lb. 
  1 
  oz. 
  troy, 
  

   and 
  found 
  the 
  following 
  species 
  : 
  — 
  

  

  1 
  For 
  purposes 
  of 
  comparison 
  I 
  have 
  marked 
  those 
  species 
  that 
  occur 
  in 
  the 
  

   Boulder 
  Clay 
  of 
  Great 
  Crosby 
  with 
  a 
  C 
  (see 
  ' 
  Foraminiferal 
  Boulder 
  Clay 
  at 
  Great 
  

   Crosby,' 
  Proc.Liverp. 
  Geol.Soc, 
  Session 
  1895-96, 
  vol. 
  vii. 
  pt. 
  iv. 
  pp. 
  388-390), 
  

   and 
  those 
  that 
  occur 
  in 
  the 
  Boulder 
  Clay 
  of 
  Wirral, 
  Cheshire, 
  with 
  a 
  W 
  (see 
  

   paper 
  by 
  Davies 
  & 
  Eeade, 
  Proc. 
  Liverp. 
  Geol. 
  Soc, 
  Session 
  1894-95, 
  vol. 
  vii. 
  

   pt. 
  iii. 
  pp. 
  334-335 
  & 
  pp. 
  342-344). 
  

  

  