﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  211 
  

  

  river, 
  are 
  a 
  number 
  of 
  good 
  specimens 
  of 
  Amnigenia 
  catskillemis 
  

   (Van.) 
  Hall, 
  the 
  characteristic 
  fossil 
  of 
  the 
  Oneonta 
  sandstone. 
  

  

  LXXV 
  F. 
  One 
  mile 
  above 
  Gilboa 
  the 
  Manorkill 
  enters 
  the 
  Scho- 
  

   harie 
  river 
  from 
  the 
  east. 
  Only 
  a 
  short 
  distance 
  from 
  its 
  mouth 
  

   are 
  the 
  Manorkill 
  falls, 
  or 
  cascade, 
  which 
  occur 
  in 
  a 
  pretty 
  glen 
  

   that 
  is 
  quite 
  a 
  popular 
  resort 
  for 
  picnic 
  parties 
  during 
  the 
  

   summer. 
  The 
  accompanying 
  picture 
  gives 
  a 
  fairly 
  good- 
  idea 
  of 
  

   the 
  falls. 
  Below 
  them 
  reaching 
  to 
  the 
  level 
  of 
  the 
  Schoharie 
  

   river 
  is 
  massive 
  greenish 
  gray 
  sandstone 
  with 
  the 
  lithological 
  

   appearance 
  of 
  the 
  Oneonta. 
  

  

  According 
  to 
  Sherwood's 
  section^ 
  the 
  base 
  of 
  the 
  cascade 
  is 
  57 
  

   feet 
  above 
  the 
  top 
  of 
  the 
  sandstone 
  which 
  contains 
  the 
  tree 
  ferns, 
  

   Psaronius 
  textilis 
  Dn., 
  at 
  Gilboa. 
  Above 
  the 
  bridge 
  there 
  is 
  a 
  

   small 
  fall 
  above 
  which 
  on 
  the 
  southern 
  bank 
  of 
  the 
  creek 
  are 
  

   bluish 
  to 
  greenish 
  crumbly 
  shales 
  containing 
  fish 
  plates 
  one 
  of 
  

   which 
  was 
  recognized 
  by 
  Dr 
  Eastman 
  as 
  probably 
  belonging 
  to 
  

   Bothriolepis 
  minor 
  Newb. 
  The 
  number 
  of 
  specimens 
  is 
  not 
  great 
  

   and 
  the 
  fossiliferous 
  layer 
  apparently 
  does 
  not 
  have 
  any 
  con- 
  

   siderable 
  extent. 
  A 
  few 
  feet 
  above 
  are 
  red 
  shales 
  forming 
  a 
  well 
  

   marked 
  zone 
  in 
  the 
  sides 
  of 
  the 
  glen, 
  12 
  feet 
  in 
  thickness. 
  The 
  

   rocks 
  have 
  a 
  thickness 
  of 
  120 
  feet 
  from 
  the 
  foot 
  of 
  the 
  cascade 
  

   to 
  the 
  base 
  of 
  this 
  zone 
  of 
  red 
  shale 
  as 
  measured 
  by 
  Sherwood. 
  

   The 
  dip 
  in 
  the 
  glen 
  above 
  the 
  bridge 
  varies 
  somewhat 
  with 
  dif- 
  

   ferent 
  strata, 
  but 
  is 
  decidedly 
  to 
  the 
  southeast. 
  On 
  the 
  northern 
  

   bank 
  it 
  ranges 
  from 
  1 
  -3J° 
  ; 
  while 
  on 
  the 
  southern 
  bank 
  a 
  dip 
  of 
  

   1^° 
  almost 
  directly 
  east 
  was 
  noted. 
  Several 
  small 
  specimens 
  of 
  

   Psaronius 
  textilis 
  Dn. 
  were 
  found 
  by 
  the 
  side 
  of 
  the 
  highway 
  

   when 
  this 
  locality 
  was 
  first 
  visited, 
  which 
  apparently 
  came 
  from 
  

   some 
  of 
  the 
  greenish 
  gray 
  sandstone 
  when 
  the 
  excavations 
  were 
  

   made 
  for 
  the 
  foundation 
  of 
  the 
  bridge. 
  

  

  At 
  the 
  saw 
  mill 
  one 
  quarter 
  mile 
  above 
  the 
  mouth 
  of 
  the 
  

   Manorkill 
  and 
  200 
  feet 
  above 
  the 
  level 
  of 
  the 
  Schoharie 
  river 
  are 
  

   red 
  sandstones 
  and 
  shales, 
  12 
  feet 
  of 
  which 
  are 
  exposed. 
  Be- 
  

   tween 
  the 
  two 
  zones 
  of 
  red 
  shale 
  there 
  are 
  some 
  56 
  feet 
  of 
  grayish 
  

   sandstone 
  and 
  shale 
  shown 
  along 
  the 
  bank 
  of 
  the 
  creek. 
  This 
  

  

  a 
  Proc. 
  Amer. 
  philosophical 
  society, 
  17:347. 
  

  

  