﻿68 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  wide 
  that 
  an 
  oceanic 
  current 
  could 
  enter 
  the 
  epicontinental 
  sea 
  from 
  

   tne 
  northwest, 
  bringing 
  with 
  it 
  new 
  faunal 
  elements, 
  and 
  spreading 
  

   mud 
  shales 
  over 
  a 
  large 
  area 
  of 
  eastern 
  North 
  America. 
  

  

  The 
  evidence 
  of 
  a 
  deeper 
  sea 
  in 
  the 
  Levis 
  channel, 
  furnished 
  by 
  

   the 
  series 
  of 
  Lower 
  Siluric 
  graptolite 
  shales, 
  was 
  also 
  presented, 
  

   and 
  the 
  relations 
  of 
  the 
  graptolite 
  shales 
  to 
  the 
  mobile 
  parts 
  of 
  the 
  

   earth 
  crust, 
  the 
  geosynclines, 
  briefly 
  mentioned. 
  

  

  Friday 
  evening 
  the 
  party 
  went 
  to 
  Cliff 
  Haven, 
  3 
  miles 
  south 
  of 
  

   Plattsburg, 
  where 
  the 
  authorities 
  of 
  the 
  Champlain 
  Assembly 
  had 
  

   placed 
  at 
  the 
  disposal 
  of 
  Section 
  E 
  the 
  New 
  York 
  cottage, 
  in 
  

   which 
  the 
  party 
  were 
  delightfully 
  housed 
  for 
  five 
  days. 
  Excursions 
  

   were 
  made 
  each 
  day 
  to 
  various 
  points, 
  and 
  in 
  the 
  evening 
  all 
  re- 
  

   turned 
  to 
  the 
  broad 
  piazzas 
  of 
  the 
  cottage, 
  where 
  they 
  sat 
  and 
  dis- 
  

   cussed 
  the 
  various 
  trips, 
  within 
  a 
  few 
  feet 
  of 
  one 
  of 
  the 
  striking 
  

   fault-line 
  scarps 
  of 
  the 
  region, 
  looking 
  out 
  over 
  the 
  waters 
  of 
  Lake 
  

   Champlain. 
  

  

  On 
  Saturday 
  morning, 
  July 
  6, 
  the 
  party 
  gathered 
  on 
  the 
  steam 
  

   launch 
  kindly 
  furnished 
  by 
  the 
  State 
  of 
  New 
  York, 
  and 
  under 
  the 
  

   guidance 
  of 
  Professor 
  Cushing, 
  Dr 
  Ruedemann 
  and 
  Professor 
  Hud- 
  

   son, 
  took 
  a 
  charming 
  sail 
  on 
  Lake 
  Champlain. 
  The 
  party 
  visited 
  

   Crab 
  and 
  Valcour 
  islands 
  and 
  studied 
  the 
  Palezoic 
  sediments 
  

   which 
  are 
  there 
  so 
  beautifully 
  exposed 
  with 
  their 
  many 
  interesting 
  

   structural 
  features. 
  

  

  At 
  noon 
  the 
  party 
  enjoyed 
  the 
  delightful 
  hospitality 
  of 
  Prof, 
  and 
  

   Mrs 
  George 
  H. 
  Hudson 
  of 
  Plattsburg 
  at 
  their 
  charming 
  camp 
  on 
  

   Valcour 
  island. 
  After 
  lunch 
  a 
  talk 
  was 
  given 
  by 
  John 
  M. 
  Clarke 
  

   on 
  

  

  Lake 
  Champlain 
  

  

  Dr 
  Clarke 
  spoke 
  of 
  the 
  origin 
  of 
  the 
  Lake 
  Champlain 
  valley 
  as 
  

   the 
  result 
  of 
  a 
  series 
  of 
  downthrown 
  fault 
  blocks 
  having 
  the 
  evident 
  

   aspect 
  of 
  a 
  grab 
  en. 
  He 
  referred 
  to 
  the 
  later 
  evidence 
  as 
  confirm- 
  

   atory 
  of 
  Logan's 
  conception 
  of 
  the 
  Lake 
  Champlain 
  fault 
  and 
  indi- 
  

   cated 
  that 
  this 
  origin 
  was 
  borne 
  out 
  by 
  the 
  present 
  attitude 
  of 
  the 
  

   downthrown 
  Paleozoics 
  against 
  the 
  abrupt 
  eastern 
  scarps 
  of 
  the 
  

   Adirondack 
  crystalline 
  shield. 
  

  

  Reference 
  was 
  also 
  made 
  by 
  the 
  speaker 
  to 
  the 
  possibility 
  that 
  

   the 
  geographical 
  name 
  Trembleau, 
  which 
  designates 
  the 
  prominent 
  

   headland 
  and 
  mountain 
  ridge 
  just 
  south 
  of 
  Port 
  Kent, 
  embodies 
  

   the 
  recoid 
  of 
  an 
  ancient 
  seismic 
  disturbance, 
  and 
  with 
  this 
  as 
  a 
  text 
  

   fuller 
  reference 
  was 
  made 
  to 
  the 
  Canadian 
  earthquake 
  of 
  1663 
  

  

  