﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  177 
  

  

  fossils; 
  while 
  the 
  sandstone 
  layers 
  contain 
  some 
  different 
  species. 
  

   A 
  layer 
  of 
  ferruginous 
  concretions 
  is 
  noticeable. 
  The 
  dip 
  on 
  the 
  

   western 
  bank 
  is 
  from 
  1° 
  to 
  1J° 
  S 
  64° 
  W 
  and 
  on 
  the 
  eastern 
  

   bank 
  it 
  is 
  more 
  than 
  1° 
  in 
  amount, 
  west 
  of 
  south 
  (the 
  exact 
  

   direction 
  and 
  amount 
  were 
  not 
  determined 
  on 
  account 
  of 
  the 
  

   distance 
  at 
  which 
  the 
  observation 
  was 
  made). 
  

  

  The 
  rocks 
  next 
  studied 
  (A 
  2 
  ) 
  are 
  in 
  a 
  small 
  brook 
  at 
  Houston 
  

   Corners, 
  three 
  quarters 
  of 
  a 
  mile 
  east 
  of 
  Breakabeen 
  and 
  350 
  feet 
  

   above 
  the 
  river. 
  The 
  outcrop 
  consists 
  of 
  coarse, 
  arenaceous 
  

   shales 
  to 
  shaly 
  sandstones, 
  the 
  latter 
  containing 
  numerous 
  speci- 
  

   mens 
  of 
  the 
  large 
  Hamilton 
  Lamellibranchs. 
  These 
  rocks 
  are 
  

   clearly 
  of 
  the 
  Hamilton 
  formation 
  and 
  the 
  following 
  species 
  were 
  

   collected 
  : 
  

  

  1 
  Camarotoechia 
  prolifica 
  Hall 
  (r) 
  

  

  2 
  Chonetes 
  coronata 
  (Con.) 
  Hall 
  (rr) 
  

  

  3 
  Spirifer 
  mucronatus 
  (Con.) 
  Bill 
  (?) 
  (rr) 
  

  

  4 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Hall 
  (rr) 
  

  

  5 
  Liopteria 
  greeni 
  Hall 
  (rr) 
  

  

  6 
  Glyptodesma 
  erectwn 
  (Con.) 
  Hall 
  (?) 
  (rr) 
  

  

  7 
  Goniopjiora 
  hamiltonensis 
  (Hall) 
  Miller 
  (rr) 
  

  

  8 
  Grammysia 
  alveata 
  (Con.) 
  Hall 
  (c) 
  

  

  9 
  Pliacops 
  rana 
  (Green) 
  Hall 
  (rr) 
  

  

  10 
  Microdon 
  {Cypricardella) 
  bellistriatus 
  Con. 
  (rr) 
  

  

  11 
  Crinoid 
  stems 
  

  

  On 
  the 
  slope 
  of 
  the 
  hill 
  to 
  the 
  north 
  of 
  east 
  of 
  the 
  ledges 
  in 
  

   the 
  brook 
  at 
  the 
  Corners, 
  the 
  rocks 
  are 
  covered 
  for 
  55 
  feet, 
  when 
  

   a 
  zone 
  of 
  thin 
  bedded 
  sandstones 
  (A 
  4 
  ) 
  is 
  reached. 
  This 
  outcrop 
  

   of 
  somewhat 
  crossbedded 
  sandstones 
  about 
  10 
  feet 
  thick 
  is 
  im- 
  

   mediately 
  above 
  the 
  road 
  leading 
  northeast 
  from 
  Houston 
  Cor- 
  

   ners 
  toward 
  the 
  top 
  of 
  Moheganter 
  hill. 
  The 
  dip 
  varies; 
  but 
  

   perhaps 
  will 
  average 
  1|° 
  S 
  20° 
  W. 
  The 
  ledge 
  was 
  not 
  suffi- 
  

   ciently 
  broken 
  to 
  enable 
  one 
  to 
  easily 
  determine 
  whether 
  it 
  con- 
  

   tained 
  fossils 
  or 
  not. 
  About 
  65 
  feet 
  above 
  it 
  are 
  thin 
  bluish 
  

   shales 
  (A 
  6 
  ) 
  containing 
  abundant 
  fossils. 
  These 
  shales 
  hardly 
  

   form 
  a 
  ledge 
  but 
  from 
  the 
  way 
  in 
  which 
  they 
  lie 
  on 
  the 
  surface 
  

  

  