﻿178 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  there 
  seems 
  to 
  be 
  no 
  doubt 
  that 
  they 
  belong 
  at 
  that 
  horizon, 
  

   and 
  are 
  apparently 
  in 
  the 
  Hamilton 
  formation. 
  The 
  following 
  

   species 
  were 
  collected: 
  

  

  1 
  Oamarotoechia 
  prolifica 
  (Hall) 
  H. 
  & 
  0. 
  (a) 
  

  

  2 
  Ambocoelia 
  unibonata 
  (Con.) 
  Hall 
  (rr) 
  

  

  3 
  Strophalosia 
  truncata 
  (Hall) 
  Beecher 
  (rr) 
  

  

  4 
  Ptermea 
  flabella 
  (Con.) 
  Hall 
  (c) 
  

  

  5 
  Nyassa 
  arguta 
  Hall 
  . 
  (c) 
  

  

  6 
  Nuculites 
  oblongatus 
  Con. 
  (rr) 
  

  

  7 
  Palaeoneilo 
  constricta 
  (Con.) 
  Hall 
  . 
  (rr) 
  

  

  8 
  Nucula 
  bellistriata 
  (Con.) 
  Hall 
  (rr) 
  

  

  9 
  Tellinopsis 
  subemarginata 
  (Con.) 
  Hall 
  (rr) 
  

   10 
  Tentaculites 
  bellulus 
  Hall 
  (r) 
  

  

  25 
  feet 
  above 
  the 
  base 
  of 
  these 
  shales 
  is 
  a 
  ledge 
  of 
  thin 
  bedded, 
  

   grayish 
  sandstone 
  (A 
  7 
  ) 
  from 
  four 
  to 
  five 
  feet 
  in 
  thickness 
  in 
  which 
  

   no 
  fossils 
  were 
  found. 
  Then 
  there 
  is 
  a 
  cqvered 
  slope 
  of 
  75 
  feet 
  

   when, 
  at 
  an 
  altitude 
  of 
  585 
  feet 
  (barometric) 
  above 
  the 
  river, 
  

   the 
  base 
  of 
  decidedly 
  green 
  argillaceous 
  shales 
  (A 
  9 
  ) 
  is 
  reached. 
  

   These 
  are 
  capped 
  by 
  thin 
  bedded, 
  grayish 
  sandstones 
  and 
  to- 
  

   gether 
  they 
  have 
  a 
  thickness 
  of 
  25 
  feet. 
  Careful 
  search 
  was 
  

   made 
  in 
  the 
  green 
  shales 
  for 
  foss'ils, 
  but 
  without 
  success 
  and 
  

   the 
  rocks 
  have 
  the 
  lithologic 
  appearance 
  of 
  the 
  Sherburne 
  to 
  

   which 
  formation 
  they 
  are 
  referred. 
  After 
  15 
  feet 
  of 
  covered 
  

   slope 
  there 
  is 
  a 
  ledge 
  of 
  thin 
  bedded, 
  unfossiliferous 
  bluish 
  gray 
  

   sandstone 
  (A 
  10 
  ) 
  about 
  10 
  feet 
  in 
  thickness. 
  For 
  the 
  remaining 
  

   upper 
  part 
  of 
  the 
  hill 
  the 
  rocks 
  are 
  mostly 
  covered, 
  two 
  feet 
  

   of 
  a 
  bluish 
  gray 
  thin 
  bedded 
  sandstone 
  outcropping 
  at 
  685 
  feet 
  

   above 
  the 
  river, 
  and 
  a 
  two 
  foot 
  stratum 
  of 
  greenish 
  breccia 
  with 
  

   clay 
  pebbles 
  at 
  745 
  feet. 
  The 
  hill 
  was 
  examined 
  70 
  feet 
  higher 
  to 
  

   815 
  feet, 
  which 
  is 
  near 
  its 
  top, 
  but 
  no 
  further 
  ledges 
  were 
  noticed. 
  

   On 
  this 
  upper 
  slope 
  of 
  the 
  hill, 
  however, 
  are 
  plenty 
  of 
  loose 
  blocks 
  

   of 
  red 
  sandstone 
  probably 
  in 
  place 
  near 
  that 
  horizon 
  or 
  perhaps 
  

   that 
  once 
  capped 
  the 
  hill 
  and 
  through 
  erosion 
  have 
  dropped 
  down 
  

   its 
  side. 
  In 
  the 
  above 
  section 
  the 
  Hamilton 
  extends 
  fully 
  480 
  

   feet 
  above 
  the 
  level 
  of 
  the 
  Schoharie 
  river, 
  and 
  a 
  little 
  more 
  

  

  