﻿O 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  classifying 
  and 
  mapping 
  of 
  the 
  shales 
  is 
  wholly 
  Doctor 
  Ruede- 
  

   mann's 
  ; 
  and 
  the 
  whole 
  Schuylerville 
  quadrangle 
  also 
  with 
  the 
  

   trifling 
  exception 
  of 
  the 
  extreme 
  northwest 
  corner. 
  

  

  During 
  the 
  progress 
  of 
  the 
  work 
  an 
  invitation 
  was 
  extended 
  to 
  

   Prof. 
  J. 
  F. 
  Kemp 
  to 
  collaborate 
  in 
  the 
  study 
  of 
  the 
  spring 
  waters. 
  

   Circumstances 
  later 
  developed 
  which 
  rendered 
  it 
  advisable 
  to 
  

   publish 
  the 
  report 
  which 
  he 
  drew 
  up 
  as 
  a 
  separate 
  paper 
  and 
  in 
  ad- 
  

   vance 
  of 
  the 
  main 
  report. 
  1 
  The 
  aid 
  rendered 
  is 
  gratefully 
  

   acknowledged. 
  

  

  During 
  the 
  progress 
  of 
  the 
  field 
  work 
  several 
  geologists 
  have 
  

   spent 
  some 
  time 
  with 
  us 
  on 
  the 
  ground, 
  and 
  given 
  most 
  helpful 
  

   suggestion 
  and 
  counsel. 
  Days 
  spent 
  with 
  Messrs 
  Ulrich, 
  Kemp, 
  

   Smyth, 
  Van 
  Ingen 
  and 
  Miller 
  are 
  in 
  no 
  slight 
  degree 
  responsible 
  

   for 
  whatever 
  of 
  merit 
  may 
  lie 
  in 
  this 
  report. 
  

  

  Over 
  much 
  of 
  the 
  Saratoga 
  sheet 
  glacial 
  drift 
  is 
  so 
  widespread 
  

   and 
  thick 
  as 
  to 
  render 
  hopeless 
  the 
  attempt 
  to 
  accurately 
  map 
  

   the 
  geology 
  beneath, 
  which 
  is 
  peculiarly 
  unfortunate 
  because 
  the 
  

   geology 
  is 
  complicated 
  and 
  difficult. 
  This 
  has 
  been 
  the 
  chief, 
  and 
  

   a 
  very 
  great, 
  drawback 
  to 
  the 
  successful 
  prosecution 
  of 
  the 
  work. 
  

  

  LOCATION 
  AND 
  CHARACTER 
  

  

  BY 
  H. 
  P. 
  CUSHING 
  

  

  These 
  two 
  quadrangles, 
  the 
  Saratoga 
  and 
  Schuylerville, 
  lie 
  in 
  

   extreme 
  eastern 
  New 
  York, 
  about 
  midway 
  of 
  the 
  State 
  from 
  north 
  

   to 
  south. 
  The 
  territory 
  included 
  lies 
  between 
  latitude 
  43 
  and 
  43 
  ° 
  

   15' 
  N, 
  and 
  longitude 
  73 
  ° 
  30' 
  and 
  74 
  W, 
  hence 
  extending 
  over 
  J 
  /i° 
  oi 
  

   latitude 
  and 
  ^° 
  of 
  longitude. 
  It 
  falls 
  just 
  short 
  of 
  containing 
  450 
  

   square 
  miles. 
  

  

  The 
  district 
  includes 
  parts 
  of 
  several 
  topographic 
  and 
  geologic 
  

   provinces. 
  Bits 
  of 
  the 
  southeast 
  margin 
  of 
  the 
  Adirondack 
  high- 
  

   land, 
  included 
  by 
  Powell 
  in 
  the 
  province 
  he 
  called 
  the 
  New 
  England 
  

   plateaus, 
  are 
  seen. 
  This 
  highland 
  is 
  separated 
  from 
  the 
  high 
  

   Appalachian 
  plateau 
  of 
  southern 
  New 
  York 
  by 
  the 
  Mohawk 
  valley 
  

   lowland, 
  a 
  valley 
  eaten 
  out 
  by 
  stream 
  erosion 
  along 
  the 
  belt 
  of 
  

   weak 
  shales 
  which 
  are 
  the 
  surface 
  rocks 
  through 
  most 
  of 
  it. 
  To 
  

   this 
  lowland 
  belong 
  the 
  shales 
  of 
  the 
  southern 
  part 
  of 
  the 
  Saratoga 
  

   quadrangle. 
  

  

  The 
  Adirondack 
  highland 
  is 
  separated 
  from 
  the 
  main 
  mass 
  of 
  

   the 
  New 
  England 
  plateaus 
  by 
  the 
  low 
  grounds 
  of 
  the 
  Champlain- 
  

  

  *N. 
  Y. 
  State 
  Mus. 
  Bui. 
  159- 
  

  

  