﻿72 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  existence 
  of 
  many 
  sand 
  flat 
  delta 
  or 
  lake 
  deposits 
  makes 
  it 
  practi- 
  

   cally 
  certain 
  that 
  this 
  was 
  a 
  very 
  extensive 
  lake. 
  It 
  extended 
  

   northward 
  up 
  the 
  Schroon 
  river 
  as 
  a 
  long, 
  narrow 
  body 
  of 
  water 
  

   at 
  least 
  as 
  far 
  as 
  North 
  Hudson, 
  with 
  a 
  branch 
  extending 
  eastward 
  

   to 
  form 
  an 
  enlarged 
  Paradox 
  lake. 
  Southward 
  from 
  Pottersville, 
  

   all 
  the 
  lowland 
  (below 
  the 
  880 
  foot 
  contour) 
  southward 
  to 
  South 
  

   Horicon 
  and 
  Meade 
  pond 
  (south 
  of 
  Chestertown) 
  was 
  occupied 
  

   by 
  the 
  lake, 
  with 
  a 
  prominent 
  branch 
  extending 
  northeastward 
  

   over 
  the 
  Brant 
  lake 
  area, 
  and 
  a 
  smaller 
  branch 
  over 
  Valentine 
  

   pond. 
  Another 
  branch 
  appears 
  to 
  have 
  reached 
  northwestward 
  

   from 
  Chestertown 
  over 
  the 
  Loon 
  lake 
  area, 
  though 
  this 
  is 
  not 
  quite 
  

   so 
  certain. 
  The 
  dam 
  which 
  held 
  this 
  water 
  at 
  so 
  high 
  a 
  level 
  was 
  

   quite 
  certainly 
  one 
  of 
  glacial 
  drift 
  across 
  what 
  is 
  now 
  the 
  deep, 
  

   narrow 
  channel 
  of 
  Schroon 
  river 
  1 
  mile 
  south 
  of 
  South 
  Horicon. 
  

   It 
  is 
  important 
  to 
  note 
  in 
  this 
  connection 
  that 
  the 
  boulder 
  moraine, 
  

   above 
  described, 
  crosses 
  the 
  river 
  here. 
  The 
  Schroon 
  lake 
  reser- 
  

   voir, 
  which 
  may 
  some 
  day 
  be 
  built 
  by 
  the 
  State 
  by 
  means 
  of 
  an 
  

   artificial 
  dam 
  across 
  the 
  river 
  at 
  this 
  same 
  point, 
  would 
  largely 
  

   restore 
  the 
  former 
  lake. 
  

  

  Sand 
  terraces 
  around 
  Brant 
  lake, 
  especially 
  toward 
  the 
  east 
  end 
  

   along 
  Mill 
  brook, 
  prove 
  the 
  former 
  higher 
  water 
  level 
  of 
  that 
  

   lake. 
  Around 
  Loon 
  lake 
  there 
  are 
  suggestions 
  of 
  lake 
  deposits 
  

   about 
  10 
  or 
  15 
  feet 
  above 
  the 
  present 
  water 
  level 
  but 
  they 
  are 
  not 
  

   very 
  decisive. 
  In 
  the 
  immediate 
  vicinity 
  of 
  Chestertown 
  and 
  one- 
  

   half 
  of 
  a 
  mile 
  west 
  of 
  Starbuckville, 
  there 
  are 
  waterlaid 
  sands 
  or 
  

   sand 
  flats 
  reaching 
  altitudes 
  of 
  about 
  880 
  feet 
  as 
  nearly 
  as 
  can 
  be 
  

   judged 
  from 
  the 
  contour 
  lines. 
  At 
  Pottersville 
  the 
  delta 
  material 
  

   lies 
  at 
  from 
  880 
  to 
  900 
  feet; 
  north 
  of 
  Schroon 
  lake 
  village 
  up 
  to 
  

   920 
  feet; 
  and 
  at 
  North 
  Hudson 
  (Paradox 
  lake 
  sheet) 
  up 
  to 
  960 
  

   feet. 
  Between 
  Schroon 
  lake 
  village 
  and 
  North 
  Hudson 
  there 
  is 
  

   an 
  almost 
  continuous 
  succession 
  of 
  such 
  terraces 
  along 
  Schroon 
  

   river, 
  with 
  gradually 
  increasing 
  altitudes 
  toward 
  the 
  north. 
  The 
  

   rate 
  of 
  increasing 
  northward 
  elevation 
  of 
  these 
  old 
  lake 
  delta 
  de- 
  

   posits 
  is 
  in 
  almost 
  perfect 
  harmony 
  with 
  the 
  figures 
  given 
  by 
  Pro- 
  

   fessor 
  Woodworth 
  for 
  the 
  warping 
  of 
  the 
  Lake 
  Champlain 
  ter- 
  

   races. 
  As 
  stated 
  on 
  page 
  66, 
  the 
  rate 
  of 
  northward 
  increase 
  at 
  

   the 
  latitude 
  of 
  Schroon 
  lake 
  should 
  be 
  about 
  3^ 
  feet 
  a 
  mile. 
  The 
  

   altitude 
  of 
  the 
  terraces 
  at 
  Chestertown 
  is 
  880 
  feet; 
  at 
  Schroon 
  

   Lake 
  village 
  920 
  feet; 
  and 
  at 
  North 
  Hudson 
  960 
  feet. 
  This 
  is 
  a 
  

   total 
  difference 
  in 
  altitude 
  of 
  80 
  feet 
  in 
  the 
  distance 
  of 
  22 
  miles 
  

   from 
  Chestertown 
  to 
  North 
  Hudson, 
  or 
  at 
  the 
  rate 
  of 
  3-6-J— 
  feet 
  

  

  