﻿346 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  954 
  

  

  The 
  chert 
  increases 
  and 
  is 
  very 
  irregularly 
  distributed 
  

   without 
  apparent 
  division 
  into 
  layers. 
  At 
  995 
  the 
  chert 
  

   begins 
  to 
  diminish 
  and 
  disappears 
  at 
  998-^. 
  No 
  fossils 
  

   observed. 
  

  

  998^ 
  

  

  Grey 
  limestone, 
  with 
  corals 
  containing 
  oil. 
  No 
  chert. 
  

   Phacops 
  bombifrons 
  very 
  abundant. 
  Corals 
  poorly 
  pre- 
  

   served. 
  Favosites 
  tuberosus, 
  Syringopora, 
  Zaphrentis 
  sp. 
  

  

  1001 
  

  

  Hard, 
  compact 
  sandstone, 
  dark 
  green 
  where 
  finest, 
  with 
  streaks, 
  splotches 
  and 
  

   tubes 
  of 
  coarse 
  lighter-colored 
  quartz 
  grains 
  mingled 
  with 
  green 
  chloritic 
  scales. 
  

   This 
  lighter 
  quartz 
  sand 
  increases 
  downward 
  becoming 
  a 
  cement 
  holding 
  large 
  

   irregularly 
  rounded 
  masses 
  of 
  dark 
  bituminous 
  hydraulic 
  limestone 
  and 
  some 
  of 
  a 
  

   drab, 
  purer 
  limestone. 
  The 
  few 
  fossils 
  which 
  have 
  been 
  determined 
  are 
  in 
  Ihe 
  

   sandy 
  cement 
  and 
  are 
  usually 
  visible 
  only 
  in 
  transverse 
  sections. 
  (Schoharie 
  grit 
  

   -f 
  Oriskany 
  sandstone.) 
  The 
  most 
  frequently 
  occurring 
  shell 
  is 
  an 
  undescribed 
  

   pentameroid 
  of 
  the 
  type 
  of 
  P. 
  arata, 
  but 
  with 
  fuller 
  umbones 
  and 
  highly 
  variable 
  

   exterior. 
  Some 
  of 
  the 
  specimens 
  are 
  strongly 
  plicate 
  about 
  the 
  margins, 
  but 
  

   usually 
  these 
  plications 
  are 
  quite 
  obsolete 
  except 
  for 
  low 
  irregular 
  radial 
  undula- 
  

   tions, 
  the 
  shell 
  having 
  thus 
  a 
  smooth 
  exterior. 
  

  

  The 
  other 
  fossils 
  observed 
  are 
  Atrypa 
  reticularis, 
  Orthis 
  cf 
  . 
  propinqua, 
  frag- 
  

   ment 
  of 
  a 
  large 
  finely-striated 
  orthoid, 
  perhaps 
  Hipparionyx 
  proximus, 
  Stropheo- 
  

   donta, 
  large 
  species, 
  Zaphrentis 
  sp.?, 
  Pentagonia 
  unisulcata, 
  small 
  form, 
  Spirifer, 
  

   large 
  species, 
  cf 
  . 
  arenosus. 
  

  

  1006 
  

  

  Highly 
  bituminous, 
  dark 
  chocolate-colored 
  hydraulic 
  lime- 
  

   stone 
  with 
  crystallizations 
  of 
  calcite 
  and 
  celestite 
  in 
  small 
  

   masses, 
  sometimes 
  filling 
  cavities. 
  No 
  fossils. 
  

  

  