﻿a 
  rORB 
  

  

  along 
  the 
  from 
  Watervliet 
  and 
  Tiny 
  southward 
  would 
  have 
  

  

  to 
  1 
  nded 
  as 
  I- 
  TrentoD 
  The 
  term 
  would, 
  bei 
  

  

  ome 
  mislead 
  lot, 
  even 
  if* 
  ii 
  Bhbold 
  ' 
  red 
  to 
  retain 
  

  

  it 
  i 
  ii. 
  • 
  and 
  Utica 
  zones, 
  the 
  objection 
  woold 
  have 
  to 
  

  

  be 
  that 
  these 
  are 
  nowh< 
  d 
  in 
  typical 
  sections 
  with 
  

  

  their 
  opper 
  and 
  Lower 
  boondaries 
  and 
  with 
  their 
  typical 
  faunas 
  

   in 
  the 
  Hudson 
  valley, 
  while 
  these 
  conditions 
  which 
  would 
  appear 
  

   absolutely 
  q< 
  j 
  for 
  the 
  proper 
  definition 
  of 
  a 
  Btratigraphic 
  

  

  term 
  are 
  satisfactorily 
  fulfilled 
  in 
  the 
  neighborhoods 
  of 
  Utica 
  and 
  

   raine, 
  as 
  shown 
  by 
  Walcotl 
  and 
  Emmons. 
  The 
  writer 
  holds, 
  

   therefore, 
  that 
  the 
  term 
  "Hudson 
  river 
  group" 
  for 
  the 
  terranes 
  be- 
  

   en 
  the 
  Trenton 
  and 
  Medina 
  (Oneida) 
  formations 
  Bhould 
  be 
  

   dropped. 
  Clarke 
  and 
  Bchochert 
  (62) 
  have 
  proposed 
  the 
  term, 
  

   acinnatian", 
  for 
  this 
  interval 
  in 
  the 
  geologic 
  tim< 
  • 
  of 
  

  

  North 
  Ajneriea. 
  This 
  term 
  has 
  the 
  advantage 
  of 
  derivation 
  from 
  

   a 
  region 
  whore 
  not 
  only 
  the 
  CJtica 
  and 
  Lorraine 
  beds 
  are 
  

   folly 
  developed, 
  bot 
  where 
  ale 
  which 
  intervenes 
  

  

  the 
  Lorraine 
  and 
  Dpper 
  Siloric 
  age, 
  and 
  which 
  is 
  missing 
  in 
  New 
  

   York, 
  viz 
  the 
  Richmond 
  Btage, 
  is 
  present. 
  

  

  It 
  would 
  hardly 
  ho 
  appropriate 
  or 
  practical 
  to 
  transfer 
  the 
  

  

  term, 
  "Hudson 
  river 
  Bhales" 
  to 
  the 
  shales 
  of 
  the 
  Normans 
  kill 
  or 
  

  

  Dicellograptus 
  zone, 
  which 
  indeed 
  is 
  fully 
  developed 
  in 
  the 
  Ilud- 
  

  

  and 
  is 
  seen 
  there 
  t<» 
  rot 
  on 
  lower 
  Trenton 
  lime- 
  

  

  md 
  i<» 
  be 
  overlaid 
  by 
  middle 
  Trenton 
  slixl.-s. 
  As 
  a 
  fa 
  

  

  which 
  faunistically 
  and 
  lithologically 
  differs 
  strongly 
  from 
  the 
  

  

  chronoos 
  low< 
  r 
  Trenton 
  limestone, 
  i1 
  certainly 
  deserves 
  to 
  be 
  

  

  Ami 
  ased 
  the 
  term, 
  "Quebec 
  or 
  

  

  upper 
  division 
  *>\~ 
  the 
  Que 
  me 
  facies, 
  while 
  

  

  Walcott, 
  in 
  the 
  following 
  the 
  reading 
  of 
  Ami's 
  paper, 
  

  

  ated 
  that 
  the 
  term, 
  "Quebec", 
  !>• 
  d 
  to 
  this 
  upper 
  

  

  division 
  alone 
  in 
  distinction 
  from 
  "Leris" 
  etc. 
  In 
  the 
  Quebec 
  

  

  be 
  beds 
  from 
  the 
  oeighboring 
  terranes 
  by 
  

  

  faults, 
  and 
  tl 
  conomic 
  p 
  can 
  not 
  be 
  fixed 
  conclosively 
  

  

  graphyofthe 
  i, 
  bo1 
  the 
  eqoivaleni 
  shales 
  of 
  the 
  

  

  valley 
  are 
  well 
  defined 
  in 
  their 
  Btratigraphic 
  posi- 
  

  

  n. 
  

  

  