﻿FIFTH 
  REPORT 
  OF 
  THE 
  DIRECTOR 
  I908 
  29 
  

  

  the 
  northerly 
  passages 
  ended 
  in 
  the 
  open 
  sea 
  or 
  that 
  that 
  part 
  of 
  

   the 
  g-cosyncUne 
  in 
  which 
  they 
  flourished 
  failed 
  entirely 
  of 
  con- 
  

   tinuity 
  with 
  the 
  eastern 
  continent 
  while 
  more 
  southerly 
  parts 
  left 
  

   freer 
  connection 
  with 
  the 
  east 
  at 
  contemporaneous 
  periods. 
  These 
  

   aililiations 
  v,-ith 
  European 
  faunas 
  have 
  been 
  specifically 
  indicated 
  

   in 
  the 
  text 
  and 
  imply 
  a 
  well 
  defined 
  westward 
  invasion 
  along 
  these 
  

   eastern 
  channels 
  in 
  this 
  early 
  period 
  of 
  the 
  Devonic. 
  

  

  9 
  There 
  was 
  still 
  another 
  quite 
  well 
  defijied 
  channel 
  of 
  this 
  time 
  

   ^vhich 
  lias 
  not 
  here 
  been 
  specially 
  considered, 
  namely 
  that 
  repre- 
  

   sented 
  by 
  the 
  beds 
  of 
  Perry, 
  ^Le. 
  — 
  St 
  John, 
  Xew 
  Brunswick 
  — 
  

   Annapolis, 
  Nova 
  Scotia. 
  This 
  southernmost 
  Devonic 
  channel 
  is 
  

   litlle 
  known 
  at 
  present. 
  Its 
  fossils 
  have 
  been 
  studied 
  by 
  Dawson 
  

   and 
  ^Matthew 
  for 
  the 
  Xew 
  Brunswick 
  and 
  Xova 
  Scotia 
  occurrences 
  

   and 
  by 
  Williams 
  for 
  the 
  manifestations 
  in 
  Washington 
  county, 
  ^le. 
  

   V\'e 
  liave 
  had 
  extensive 
  collections 
  from 
  the 
  last 
  but 
  the 
  preserva- 
  

   tion 
  is 
  not 
  favorable 
  and 
  yet 
  good 
  enough 
  to 
  demonstrate 
  that 
  

   exact 
  information 
  in 
  regard 
  thereto 
  is 
  still 
  to 
  be 
  desired. 
  

  

  10 
  All 
  these 
  various 
  channels 
  of 
  the 
  early 
  Devonic 
  in 
  the 
  north- 
  

   east 
  converged 
  southwestward. 
  It 
  is 
  prbbable 
  however 
  that 
  they 
  

   passed 
  on 
  soutliward, 
  after 
  the 
  union 
  of 
  some 
  of 
  them, 
  by 
  dif- 
  

   ferent 
  thoroughfares, 
  ^^'e 
  here 
  come 
  face 
  to 
  face 
  with 
  certain 
  

   hypotheses 
  with 
  substantial 
  evidence 
  behind 
  them 
  but 
  they 
  may 
  

   be 
  stated 
  in 
  terms 
  which 
  will 
  permit 
  of 
  their 
  modification 
  after 
  

   more 
  detailed 
  knowledge 
  is 
  acquired. 
  

  

  11 
  The 
  possible 
  trunk 
  troughs 
  entering 
  the 
  southern 
  portions 
  of 
  

   the 
  geosyncline 
  may 
  be 
  indicated 
  thus 
  : 
  

  

  a 
  Connecticut 
  valley 
  trough. 
  The 
  valley 
  of 
  the 
  Connecticut 
  is 
  

   ancient, 
  probably 
  not 
  differing 
  in 
  origin 
  from 
  the 
  parallel 
  valleys 
  

   of 
  Lake 
  Champlain 
  and 
  the 
  Hudson 
  as 
  a 
  graben 
  valley 
  or 
  at 
  least 
  

   outlined 
  by 
  a 
  zone 
  of 
  master 
  faulting. 
  Between 
  the 
  crystalline 
  

   boundaries 
  of 
  this 
  trough 
  at 
  Lake 
  ^lemphremagog 
  and 
  southward 
  

   are 
  evidences 
  showing 
  that 
  it 
  was 
  open 
  earlier 
  that 
  the 
  Devonic, 
  

   as 
  witness 
  the 
  limestones 
  at 
  Littleton, 
  X". 
  Y. 
  with 
  species 
  of 
  Dal- 
  

   manites 
  (D 
  . 
  lunatus 
  Lambert) 
  apparently 
  of 
  very 
  late 
  Siluric 
  

   age. 
  

  

  At 
  Lake 
  IMemphremagcg 
  are 
  grits 
  carrying 
  Taonurus 
  which 
  

   have 
  been 
  identified 
  by 
  Dr 
  Ami 
  with 
  the 
  Esopus 
  grit 
  but 
  the 
  ar- 
  

   gillitcs 
  both 
  above 
  and 
  below 
  these 
  grits 
  contain 
  fossils; 
  a 
  Dal- 
  

   manites 
  similar 
  to 
  the 
  D 
  . 
  c 
  o 
  x 
  i 
  u 
  s 
  of 
  the 
  Grande 
  Greve 
  lime- 
  

   stone, 
  an 
  Orthoceras 
  of 
  distinctive 
  character, 
  with 
  traces 
  of 
  other 
  

   fossils. 
  While 
  the 
  Taonurus 
  alone 
  can 
  not 
  be 
  taken 
  as 
  a 
  safe 
  

   ^uide 
  for 
  identification 
  with 
  the 
  Esopus 
  horizon 
  of 
  Xew 
  York 
  yet 
  

  

  