﻿690 
  NEW 
  YOEK 
  STATE 
  MUSEUM 
  

  

  Tliese 
  measurements 
  apply, 
  of 
  course, 
  to 
  the 
  upper 
  terrace, 
  

   which 
  can 
  be 
  traced 
  along 
  many 
  portions 
  of 
  the 
  river.^ 
  

  

  An 
  examination 
  of 
  the 
  above 
  figures 
  and 
  the 
  distances 
  between 
  

   the 
  points 
  mentioned 
  indicates 
  an 
  interesting 
  fact. 
  Between 
  l^ew 
  

   York 
  and 
  Peekskill, 
  a 
  distance 
  of 
  45 
  miles, 
  the 
  terrace 
  rises 
  40 
  

   feet, 
  or 
  eight 
  ninths., 
  of 
  a 
  foot 
  a 
  mile. 
  From 
  Peekskill 
  to 
  West- 
  

   point 
  the 
  rise 
  is 
  eight 
  feet 
  a 
  mile. 
  From 
  Westpoint 
  to 
  !N"ew- 
  

   burgh 
  the 
  terraces 
  ascend 
  2^ 
  feet, 
  and 
  from 
  ISTewburgh 
  to 
  Albany 
  

   about 
  five 
  twelfths 
  of 
  a 
  foot 
  a 
  mile. 
  From 
  the 
  above 
  it 
  would 
  

   seem 
  that 
  the 
  uplift 
  from 
  ISTew 
  York 
  to 
  Albany 
  did 
  not 
  increase 
  

   uniformly, 
  but 
  was 
  slightly 
  greater 
  along 
  the 
  axis 
  of 
  the 
  Highlands. 
  

   To 
  determine 
  this 
  point 
  definitely 
  requires 
  a 
  large 
  number 
  of 
  accur- 
  

   ate 
  terrace 
  measurements. 
  The 
  following 
  are 
  the 
  number 
  of 
  ter- 
  

   races 
  noticed 
  at 
  the 
  different 
  localities. 
  

  

  Athens 
  2 
  

  

  Port 
  Ewen 
  2 
  

  

  Cornwall 
  , 
  . 
  , 
  2 
  

  

  Haverstraw 
  2 
  

  

  Stonypoint 
  3 
  

  

  Peekskill 
  1^ 
  

  

  Fishkill 
  2 
  

  

  Stormking 
  2 
  

  

  Schodack 
  2 
  

  

  The 
  shore 
  line 
  of 
  the 
  upper 
  terrace 
  is 
  generally 
  some 
  distance 
  

   back 
  from 
  the 
  river. 
  In 
  fact, 
  as 
  we 
  go 
  up 
  the 
  river, 
  specially 
  

   above 
  Port 
  Ewen, 
  the 
  shore 
  line 
  recedes. 
  At 
  Port 
  Ewen 
  the 
  ter- 
  

   race 
  is 
  207 
  feet 
  above 
  tide, 
  but 
  it 
  is 
  fully 
  225 
  feet 
  at 
  the 
  base 
  of 
  

   Hussey 
  mountain, 
  which 
  was 
  an 
  island 
  in 
  the 
  estuary. 
  The 
  terrace 
  

   extends 
  up 
  the 
  Wallkill 
  valley 
  several 
  miles.^ 
  It 
  seems 
  not 
  im- 
  

   probable 
  that 
  a 
  shore 
  line 
  of 
  this 
  Quaternary 
  deposit 
  will 
  be 
  found 
  

   along 
  the 
  base 
  of 
  the 
  Catskill 
  mountains, 
  or 
  not 
  far 
  from 
  there. 
  

  

  1 
  For 
  detailed 
  statement 
  of 
  terrace 
  altitudes, 
  see 
  H. 
  Ries. 
  Trans. 
  ISI. 
  Y. 
  acad. 
  

   8oi. 
  Nov. 
  1891. 
  

  

  2 
  There 
  is 
  possibly 
  a 
  second 
  lower 
  terrace 
  at 
  Peekskill. 
  

  

  3 
  Mather. 
  Geol. 
  New 
  York, 
  1st 
  dist. 
  1843. 
  p. 
  131. 
  

  

  