﻿244 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  higher 
  on 
  the 
  highway 
  and 
  to 
  the 
  east 
  are 
  soft, 
  greenish, 
  argil- 
  

   laceous 
  shales 
  with 
  occasional 
  harder 
  layers. 
  About 
  25 
  feet 
  

   above 
  the 
  sandstone 
  is 
  a 
  layer 
  of 
  mottled 
  red 
  and 
  green 
  shale 
  

   (B 
  10 
  ) 
  by 
  the 
  side 
  of 
  the 
  road. 
  This 
  is 
  the 
  first 
  indication 
  of 
  the 
  

   red 
  rocks 
  and 
  the 
  exposure 
  is 
  within 
  about 
  50 
  feet 
  of 
  the 
  top 
  

   of 
  Bradt 
  hill. 
  The 
  top 
  of 
  the 
  hill 
  on 
  the 
  highway 
  is 
  a 
  little 
  

   north 
  of 
  the 
  four 
  corners 
  and 
  from 
  the 
  mottled 
  shales 
  to 
  this 
  

   point, 
  which 
  is 
  about 
  55 
  feet 
  higher, 
  the 
  rocks 
  exposed 
  are 
  all 
  

   greenish 
  shales 
  which 
  apparently 
  are 
  in 
  the 
  Sherburne 
  formation. 
  

   The 
  top 
  of 
  Bradt 
  hill 
  is 
  1070 
  feet 
  higher 
  than 
  the 
  Onondaga 
  lime- 
  

   stone 
  at 
  West 
  Berne 
  or 
  barometrically 
  some 
  2040 
  feet 
  A. 
  T. 
  

   About 
  three 
  quarters 
  of 
  a 
  mile 
  to 
  the 
  east 
  of 
  Bradt 
  hill 
  and 
  

   hollow 
  is 
  another 
  high 
  hill 
  called 
  West 
  Mountain 
  near 
  the 
  top 
  of 
  

   which 
  are 
  coarse 
  Hamilton 
  sandstones, 
  the 
  shaly 
  layers 
  con- 
  

   taining 
  abundant 
  fossils. 
  These 
  sandstones 
  varying 
  from 
  gray 
  

   to 
  bluish 
  gray 
  in 
  color, 
  form 
  a 
  conspicuous 
  ledge 
  on 
  the 
  western 
  

   side 
  of 
  the 
  hill, 
  are 
  rather 
  coarse 
  grained, 
  and 
  on 
  the 
  weathered 
  

   surface 
  split 
  into 
  thin 
  layers 
  from 
  one 
  half 
  to 
  one 
  inch 
  in 
  thick- 
  

   ness. 
  

  

  Across 
  Bradt 
  hollow 
  to 
  the 
  northwest 
  of 
  Bradt 
  hill 
  and 
  

   West 
  mountain 
  in 
  Schoharie 
  co. 
  is 
  Mt 
  Sagerwana 
  or 
  Cotton 
  

   hill, 
  a 
  conspicuous 
  peak 
  the 
  upper 
  800 
  feet 
  of 
  which 
  is 
  in 
  the 
  

   Marcellus 
  and 
  Hamilton 
  formations. 
  

  

  XXXVIII 
  A 
  1 
  . 
  On 
  the 
  highway 
  leading 
  down 
  into 
  the 
  valley 
  of 
  

   Stony 
  creek 
  above 
  Huntersland 
  to 
  the 
  southwest 
  of 
  the 
  four 
  cor- 
  

   ners 
  on 
  top 
  of 
  Bradt 
  hill 
  are 
  soft, 
  argillaceous 
  and 
  thin 
  arenaceous 
  

   shales 
  in 
  which 
  Hamilton 
  fossils 
  are 
  quite 
  abundant. 
  The 
  best 
  

   exposures 
  are 
  three 
  quarters 
  of 
  a 
  mile 
  ENE 
  of 
  Huntersland 
  

   and 
  approximately 
  310 
  feet 
  lower 
  than 
  the 
  Bradt 
  hill 
  four 
  

   corners. 
  The 
  following 
  species 
  were 
  collected: 
  

  

  1 
  Chonetes 
  coronata 
  (Con.) 
  Hall 
  (aa) 
  

  

  2 
  Spirifer 
  mucrmiatus 
  (Con.) 
  Bill. 
  (c) 
  

  

  3 
  8. 
  audaculus 
  (Con.) 
  Whitf. 
  (r> 
  

  

  4 
  8. 
  granulosus 
  (Con.) 
  H. 
  & 
  C. 
  (?) 
  (rr) 
  

  

  5 
  Camarotoechia 
  congregata 
  (Con.) 
  H. 
  & 
  C. 
  (c) 
  

  

  