﻿HUDSON 
  RIVER 
  BEDS 
  NEAR 
  ALBANY 
  400 
  

  

  p. 
  34, 
  op. 
  cit.), 
  obviously 
  on 
  the 
  ground 
  (p. 
  2) 
  " 
  that 
  the 
  TJtica 
  

   slate 
  formation 
  was 
  traced 
  by 
  the 
  New 
  York 
  geologists 
  down 
  the 
  

   Mohawk 
  valley 
  from 
  Oneida 
  county 
  through 
  Herkimer, 
  Mont- 
  

   gomery. 
  Schenectady 
  and 
  Saratoga 
  counties 
  to 
  the 
  shores 
  of 
  the 
  

   Hudson", 
  and 
  that 
  "Prof. 
  W. 
  W. 
  Mather 
  gives 
  the 
  following 
  

   localities 
  in 
  the 
  Hudson 
  river 
  valley 
  below 
  Bakers 
  falls, 
  where 
  

   the 
  Utica 
  slate 
  is 
  to 
  be 
  observed 
  with 
  its 
  characteristic 
  grapto- 
  

   lities, 
  at 
  Waterford, 
  Ootoes, 
  Xormans 
  kill 
  below 
  Albany, 
  at 
  Hud- 
  

   son,'' 
  etc. 
  The 
  evidence 
  which 
  the 
  graptoiites 
  at 
  Normans 
  kill 
  

   afforded 
  to 
  Whitfield 
  of 
  the 
  equivalency 
  of 
  the 
  graptolitic 
  slates 
  

   and 
  the 
  Utica 
  slate, 
  is 
  also 
  cited. 
  

  

  As 
  these 
  citations 
  prove, 
  Walcott 
  based 
  his 
  correlation 
  on 
  the 
  

   continuity 
  of 
  the 
  shales 
  of 
  the 
  Mohawk 
  valley 
  with 
  those 
  of 
  the 
  

   Hudson 
  valley 
  and 
  on 
  the 
  Utica 
  slate 
  localities 
  in 
  the 
  Hudson 
  

   valley 
  as 
  mentioned 
  by 
  Mather, 
  and 
  finally 
  on 
  Whitfield's 
  asser- 
  

   tion 
  of 
  the 
  partial 
  identity 
  of 
  the 
  Normans 
  kill 
  and 
  Utica 
  faunas. 
  

   The 
  first 
  argument 
  has 
  been 
  meanwhile 
  weakened 
  by 
  the 
  estab- 
  

   lishment 
  of 
  the 
  presence 
  of 
  a 
  fault 
  between 
  the 
  disturbed 
  and 
  

   undisturbed 
  regions, 
  which 
  was 
  already 
  assumed 
  by 
  Emmons, 
  

   and 
  will 
  be 
  spoken 
  of 
  farther 
  on 
  (p. 
  504). 
  Mather's 
  assertion 
  

   of 
  the 
  presence 
  of 
  a 
  zone 
  of 
  Utica 
  shale 
  localities 
  in 
  the 
  Hudson 
  

   valley 
  was 
  caused, 
  as 
  shown 
  above, 
  by 
  his 
  failure 
  to 
  distinguish 
  

   between 
  the 
  Normans 
  kill 
  and 
  Utica 
  shale 
  graptoiites; 
  and 
  Whit- 
  

   field's 
  correlation 
  has 
  just 
  been 
  discussed 
  on 
  the 
  preceding 
  pages. 
  

  

  T. 
  N. 
  Dale 
  

  

  In 
  the 
  same 
  year 
  T. 
  Nelson 
  Dale 
  (20) 
  discovered 
  in 
  an 
  outcrop 
  

   of 
  argillaceous 
  schist 
  about 
  a 
  mile 
  west 
  of 
  the 
  Hudson 
  opposite 
  

   Poughkeepsie, 
  crinoid 
  stems, 
  O 
  r 
  t 
  h 
  i 
  s 
  t 
  e 
  s 
  t 
  u 
  d 
  i 
  n 
  a 
  r 
  i 
  a 
  , 
  O. 
  

   pectinella, 
  Leptaena 
  sericea, 
  Strop 
  ho 
  mena 
  

   alternata, 
  Bythotrephis 
  subnodosa 
  and 
  a 
  cast 
  of 
  

   a 
  gastropod 
  which 
  resembles 
  Bellerophon 
  bilobatus 
  

   (all 
  being 
  Hall's 
  identification), 
  some 
  of 
  these 
  fossils 
  being 
  also 
  

   found 
  near 
  Vassar 
  college 
  and 
  south 
  of 
  Poughkecpsie. 
  

  

  The 
  author 
  concludes 
  from 
  his 
  determinations 
  thai 
  " 
  the 
  flay 
  

   slates 
  and 
  shales 
  in 
  the 
  vicinity 
  of 
  Poughkeepsie, 
  on 
  both 
  sides 
  

   of 
  the 
  river, 
  are 
  fossiliferous 
  and 
  that 
  they 
  very 
  probably 
  belong 
  

  

  