﻿560 
  DE. 
  W. 
  FEASEE 
  HUME 
  ON 
  [Dec. 
  1897, 
  

  

  fragments 
  occupy 
  the 
  central 
  portion, 
  Ostrea 
  semiplana 
  and 
  the 
  

   branching 
  bodies 
  are 
  only 
  in 
  their 
  own 
  band, 
  and 
  the 
  BJiynchonellce 
  

   are 
  mainly 
  restricted 
  to 
  the 
  lower 
  3 
  feet. 
  

  

  The 
  Yellow 
  Sandstone 
  is 
  comparatively 
  rich 
  in 
  fossils, 
  these 
  

   including 
  Vermicularia 
  quinquecarinatct 
  , 
  Rom., 
  Ditrupa 
  difformis, 
  

   Lam., 
  Pecten 
  [Janirct] 
  quadricostatus, 
  Sow., 
  RhyncTioneJla 
  convexa, 
  

   Sow., 
  and 
  Larnna 
  appendicidata, 
  Ag. 
  This 
  is 
  the 
  only 
  locality 
  

   where 
  sea-urchins 
  and 
  corals 
  have 
  been 
  recorded 
  from 
  this 
  horizon, 
  

   Micrabacia 
  coronula, 
  Goldf., 
  being 
  frequent, 
  and 
  Discoidea 
  subucidus, 
  

   Klein, 
  not 
  uncommon. 
  We 
  obtained 
  a 
  larger 
  echinoderm 
  here, 
  

   but 
  it 
  was 
  too 
  imperfect 
  to 
  admit 
  of 
  identification. 
  

  

  The 
  Grlauconitic 
  Marls 
  are 
  displayed 
  beneath 
  the 
  sandstone, 
  

   and 
  Glauconitic 
  Sands 
  occur 
  from 
  time 
  to 
  time, 
  containing 
  a 
  

   Pecten 
  asper 
  of 
  large 
  size. 
  

  

  Barney's 
  Point, 
  near 
  Mill 
  Bay, 
  west 
  side 
  of 
  Islandmagee. 
  

  

  On 
  the 
  eastern 
  side 
  of 
  Islandmagee, 
  2 
  miles 
  north 
  of 
  Ballycarry, 
  

   occurs 
  a 
  large 
  quarry 
  which 
  must 
  at 
  one 
  time 
  have 
  been 
  extensively 
  

   worked, 
  but 
  now 
  appears 
  to 
  be 
  deserted. 
  A 
  cutting 
  has 
  been 
  

   carried 
  through 
  the 
  Cretaceous 
  rocks, 
  presenting 
  one 
  of 
  the 
  finest 
  

   sections 
  of 
  these 
  visible 
  in 
  Co. 
  Antrim. 
  Commencing 
  from 
  the 
  

   top, 
  we 
  observe 
  : 
  — 
  

  

  1. 
  Chalk 
  with 
  regular 
  layers 
  of 
  flints, 
  passing 
  below 
  into 
  

   chalk 
  with 
  scattered 
  flints, 
  which 
  contains 
  Belemnitella 
  mncronata, 
  

   Schloth., 
  Echinocorys 
  scutatus, 
  Leske, 
  C?'e?<ms-spines, 
  polyzoa, 
  and 
  

   Porosphoera. 
  

  

  2. 
  A 
  flaky 
  chalk, 
  4 
  feet 
  thick, 
  probably 
  represents 
  the 
  Spon- 
  

   giarian 
  zone, 
  which 
  was 
  not 
  so 
  clearly 
  recognized 
  palgeonto- 
  

   logically 
  as 
  at 
  Whitehead. 
  

  

  3. 
  The 
  Chloritic 
  Chalk 
  and 
  Sands 
  merge 
  one 
  into 
  another, 
  

   forming 
  a 
  rock 
  of 
  distinctly 
  green 
  tint, 
  20 
  feet 
  thick. 
  Fossils 
  are 
  

   extremely 
  abundant, 
  and 
  special 
  bands 
  are 
  very 
  clearly 
  marked. 
  

   The 
  principal 
  may 
  be 
  thus 
  summarized 
  : 
  — 
  

  

  (a) 
  Near 
  the 
  upper 
  part 
  of 
  tbe 
  series 
  is 
  an 
  Echinocorys 
  scutatus-b&nd, 
  in 
  

  

  which 
  Spondylus 
  spinosus 
  and 
  Carrier 
  ospongia 
  fungiformis 
  are 
  also 
  

   abundant. 
  The 
  rock 
  is 
  a 
  glauconitic 
  limestone. 
  

  

  (b) 
  Serpula 
  jMformis-b&nd. 
  

  

  (<?) 
  The 
  distance 
  from 
  b 
  to 
  the 
  upper 
  Inoceramus-h&nd 
  is 
  probably 
  between 
  

   3 
  and 
  \\ 
  feet 
  ; 
  below 
  is 
  a 
  second 
  Inoceramus-lajer, 
  also 
  containing 
  

   Ostrea 
  semiplana 
  and 
  numbers 
  of 
  small 
  Bhynchonellce 
  (Rh. 
  limbata, 
  

   Schloth., 
  and 
  Eh. 
  robusta, 
  Tate). 
  The 
  third 
  layer 
  of 
  Inoceramus- 
  

   fragments 
  is 
  at 
  the 
  base 
  of 
  the 
  series, 
  2 
  feet 
  below 
  the 
  second 
  band, 
  

   and 
  contains 
  Rhynchonella 
  plicatilis, 
  Sow., 
  Catopygus 
  columharius, 
  

   Lam., 
  Cidaris-sipmes, 
  and 
  probably 
  Vseudodiaderna 
  variolare, 
  Brongn 
  , 
  

   and 
  Micraster 
  breviporus 
  Ag. 
  (in 
  casts 
  only). 
  

  

  (d) 
  Yellow-green 
  sands, 
  4 
  feet 
  thick, 
  containing 
  Vermicularice, 
  a 
  small 
  

   Ostrea 
  carinata, 
  Sow., 
  a 
  cast 
  of 
  Exogyra 
  columba, 
  Lam., 
  and 
  Ostrea 
  

   la, 
  Sow. 
  

  

  This 
  section 
  is 
  of 
  especial 
  importance, 
  as 
  showing 
  that 
  the 
  zone 
  

   of 
  Exogyra 
  columba 
  is 
  below 
  that 
  of 
  Inoceramus 
  Crispil, 
  and 
  not 
  

  

  