﻿5±6 
  DE. 
  W. 
  EEASEE 
  HUME 
  ON 
  [Dec. 
  1 
  89 
  7, 
  

  

  able 
  to 
  collect 
  any 
  of 
  the 
  members 
  of 
  the 
  interesting 
  fauna 
  which 
  

   he 
  obtained 
  from 
  this 
  locality. 
  It 
  may 
  be 
  useful 
  to 
  give 
  a 
  list 
  of 
  

   the 
  species 
  described 
  by 
  Tate, 
  with 
  the 
  addition 
  of 
  Ammonites 
  

   [Pachy 
  discus] 
  peramplus, 
  which 
  has 
  not 
  been 
  previously 
  recorded. 
  

   They 
  are 
  : 
  — 
  

  

  Cephalopoda 
  : 
  Ammonites 
  [Pacliy 
  discus] 
  peramplus 
  (Mantell), 
  P. 
  

   gollevillensis, 
  d'Orb., 
  Belemnitella 
  mucronata, 
  Schloth. 
  

  

  Gasteeopoda 
  : 
  TurriteTla 
  unicarinata, 
  Woodw., 
  Cinulia 
  catenata, 
  

   Tate. 
  

  

  Pelectpoda 
  (Monomyaria) 
  : 
  Ostrea 
  vesicidaris, 
  Lam., 
  Pecten 
  ni- 
  

   tidus, 
  Mant. 
  ; 
  (Dimyaria) 
  : 
  Pholadomya 
  cordata, 
  Tate, 
  and 
  Ph. 
  

   Stewarti, 
  Tate. 
  

  

  Beachiopoda 
  : 
  Terebratula 
  carnea, 
  Sow., 
  Rhynchonella 
  octoplicata, 
  

   Sow., 
  and 
  Megerlia 
  \_Kingena~] 
  lima, 
  Defr. 
  

  

  Echlnoldea 
  : 
  Echinocorys 
  vulgaris, 
  Breyn. 
  = 
  Z£ 
  ovatus, 
  Lam., 
  type 
  

   and 
  var. 
  pyramidatus, 
  Portl., 
  Cardiaster 
  anancliytis, 
  Leske, 
  Galerites 
  

   abbreviatus, 
  Lam., 
  Cyphosoma 
  corollare, 
  Park. 
  

  

  Actjnozoa 
  : 
  Parasmilia 
  centralis, 
  Mant. 
  

  

  Poeifeea 
  : 
  Ouettardia 
  stellata, 
  Mich. 
  

  

  Tate 
  remarks 
  : 
  ' 
  from 
  beyond 
  Colin 
  Glen, 
  by 
  Kilcorig, 
  near 
  

   Lisburn, 
  to 
  Moira, 
  it 
  [the 
  White 
  Limestone] 
  is 
  seen 
  resting 
  

   directly 
  on 
  the 
  New 
  Red 
  Marls.' 
  * 
  This 
  statement 
  must 
  be 
  some- 
  

   what 
  modified, 
  the 
  base 
  of 
  the 
  Chalk 
  being 
  in 
  reality 
  a 
  mulatto- 
  

   stone, 
  that 
  is, 
  a 
  greyish 
  or 
  pinkish 
  limestone, 
  in 
  which 
  are 
  embedded 
  

   numerous 
  very 
  rounded 
  grains 
  of 
  quartz, 
  glauconitic 
  casts 
  of 
  fora- 
  

   minifera, 
  and 
  green 
  irregular 
  masses. 
  Often 
  this 
  rock 
  becomes 
  

   conglomeratic, 
  owing 
  to 
  the 
  presence 
  of 
  large 
  pebbles 
  of 
  quartz 
  and 
  

   other 
  detrital 
  fragments. 
  We 
  have 
  noticed 
  this 
  type 
  atMagheralin 
  

   and 
  Kilcorig, 
  and 
  it 
  is 
  recorded 
  in 
  the 
  Geological 
  Survey 
  Memoir, 
  

   Expl. 
  Sheet 
  36, 
  from 
  near 
  Moira. 
  

  

  Of 
  the 
  mulatto-stone 
  from 
  Magheralin 
  14*16 
  grammes 
  were 
  dis- 
  

   solved 
  in 
  20°/ 
  hydrochloric 
  acid, 
  yielding 
  2*72 
  grs. 
  of 
  residue 
  (this 
  

   excludes 
  fine 
  clay). 
  The 
  most 
  numerous 
  constituents 
  of 
  the 
  insoluble 
  

   portion 
  are 
  extremely 
  rounded 
  grains 
  of 
  transparent 
  quartz, 
  having 
  

   an 
  average 
  diameter 
  of 
  *5 
  mm., 
  flakes 
  of 
  silvery 
  muscovite, 
  and 
  

   green 
  to 
  yellow-green 
  glauconitic 
  casts 
  of 
  the 
  internal 
  chambers 
  of 
  

   foraminifera, 
  the 
  original 
  septation 
  being 
  in 
  many 
  cases 
  still 
  clearly 
  

   marked 
  out. 
  

  

  In 
  the 
  quarry 
  at 
  Kilcorig 
  lay 
  blocks 
  of 
  mulatto-stone, 
  containing 
  

   ramose 
  bodies 
  (often 
  referred 
  to 
  under 
  the 
  vague 
  terms 
  Spongia, 
  

   Amorphospongia, 
  etc.) 
  and 
  many 
  pebbles, 
  some 
  of 
  large 
  size, 
  one 
  a 
  

   transparent 
  specimen 
  of 
  quartz, 
  being 
  2 
  inches 
  in 
  length 
  and 
  1 
  in 
  

   breadth. 
  Belemnitella 
  mucronata 
  was 
  the 
  only 
  fossil 
  observed. 
  

   Although 
  the 
  rock 
  was 
  not 
  visible 
  in 
  place, 
  we 
  were 
  told 
  by 
  

   the 
  foreman 
  that 
  it 
  formed 
  the 
  floor 
  of 
  the 
  quarry. 
  The 
  Chalk 
  

   appears 
  to 
  overlie 
  directly 
  the 
  Keuper 
  Marls, 
  but 
  a 
  small 
  rising 
  

   covered 
  by 
  grass 
  hides 
  the 
  junction 
  of 
  the 
  two 
  rocks, 
  so 
  that 
  the 
  

   conglomeratic 
  limestone 
  cannot 
  be 
  much 
  more 
  than 
  a 
  foot 
  thick. 
  

   A 
  microscopic 
  section 
  shows 
  the 
  calcareous 
  part 
  to 
  consist 
  of 
  a 
  cal- 
  

   1 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxi. 
  (1865) 
  p. 
  25. 
  

  

  