﻿280 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  9 
  Palaeoneilo 
  cmarginata 
  (Con.) 
  Hall 
  (rr) 
  

  

  10 
  P. 
  constricta 
  (Con.) 
  Hall 
  (e) 
  

  

  11 
  Nucula 
  bellistriata 
  (Con.) 
  Hall 
  (r) 
  

  

  12 
  N. 
  varicosa 
  Hall 
  (rr) 
  

  

  13 
  Nuciilites 
  triqiwter 
  Con. 
  (rr) 
  

  

  14 
  Paracyclas 
  lirata 
  (Con.) 
  Hall 
  (c) 
  

  

  15 
  OrtJionota 
  (?) 
  parvula 
  Hall 
  (rr) 
  

  

  16 
  Modiella 
  pygmea 
  (Con.) 
  Hall.' 
  (rr) 
  

  

  17 
  Sphenotus 
  truncatus 
  (Con.) 
  Hall 
  (rr) 
  

  

  18 
  Nuculites 
  oolongatus 
  Con. 
  (rr) 
  

  

  19 
  Solen 
  {Palaeosolen) 
  siliquoidea 
  Hall 
  (?) 
  (rr) 
  

  

  20 
  Prothyris 
  lanceolata 
  Hall 
  < 
  (rr) 
  

  

  21 
  Grammysia 
  constricta 
  Hall 
  (rr) 
  

  

  22 
  Schizodus 
  appressus 
  (Con.) 
  Hall 
  (rr) 
  

  

  23 
  MicroSon 
  (Cypricar 
  delta) 
  tenuistriatus 
  Hall 
  (rr) 
  

  

  24 
  Liopteria 
  dehayi 
  Hall 
  * 
  (c) 
  

  

  25 
  Orthoceras 
  subulatum 
  Hall 
  (?) 
  (r) 
  

  

  26 
  0. 
  crotalum 
  Hall 
  (?) 
  (rr) 
  

   21 
  Pleurotomaria 
  sulcomarginata 
  Con. 
  (?) 
  (r) 
  

  

  28 
  Bellcrophon 
  sp. 
  (rr) 
  

  

  Fragments. 
  

  

  29 
  Dignomia 
  alveata 
  Hall 
  (?) 
  (rr) 
  

  

  30 
  Lingula 
  sp. 
  (Broken) 
  -, 
  (rr) 
  

  

  31 
  Crinoid 
  stem 
  (Large) 
  * 
  (rr) 
  

  

  Some 
  35 
  feet 
  of 
  these 
  blue 
  shales 
  are 
  shown 
  at 
  the 
  falls 
  and 
  the 
  

   dip 
  below 
  the 
  falls 
  is 
  from 
  10J° 
  to 
  11J° 
  due 
  west. 
  

  

  Forming 
  the 
  brink 
  of 
  the 
  falls 
  and 
  the 
  bed 
  of 
  the 
  creek 
  above 
  

   them 
  is 
  a 
  heavy 
  sandstone 
  (A 
  2 
  ) 
  between 
  three 
  and 
  four 
  feet 
  in 
  

   thickness, 
  which 
  splits 
  in 
  irregular 
  layers. 
  The 
  upper 
  part 
  of 
  

   this 
  sandstone 
  contains 
  an 
  abundance 
  of 
  the 
  species 
  usually 
  

   found 
  in 
  the 
  coareer 
  Hamilton 
  deposits 
  as 
  for 
  example: 
  

  

  1 
  Spirifer 
  granulosus 
  (Con.) 
  H. 
  & 
  C. 
  

  

  2 
  S. 
  mucronatus 
  (Con.) 
  Bill. 
  

  

  3 
  8. 
  audaculus 
  (Con.) 
  Whitf. 
  

  

  4 
  Tropidoleptns 
  cai"inatus 
  (Con.) 
  Hall 
  

  

  