﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  rll3^ 
  

  

  the 
  lake 
  divides, 
  as 
  the 
  static 
  waters 
  were 
  forced 
  to 
  abandon 
  one 
  level 
  

   for 
  the 
  next 
  lower 
  in 
  the 
  exposing 
  of 
  lower 
  cols 
  by 
  the 
  ice 
  recession. 
  

   It 
  has 
  been 
  pointed 
  out 
  that 
  some 
  time 
  after 
  the 
  Warren 
  levels 
  

   were 
  abandoned 
  in 
  the 
  Finger-lake 
  valleys, 
  a 
  change 
  was 
  inaugurated, 
  

   causing 
  a 
  partial 
  dismemberment 
  of 
  the 
  waters. 
  This 
  was 
  succeeded 
  

   by 
  the 
  present 
  system 
  of 
  local 
  lakes. 
  The 
  lake 
  sequence 
  in 
  the 
  

   Finger-lake 
  region 
  then 
  becomes 
  : 
  

  

  1 
  An 
  epoch 
  of 
  local 
  lakes 
  ; 
  the 
  initial 
  stage 
  filling 
  the 
  extreme 
  

  

  southern 
  ends 
  of 
  the 
  valleys 
  with 
  free 
  drainage 
  southward. 
  

  

  2 
  An 
  epoch 
  of 
  general 
  lakes 
  ; 
  when 
  the 
  waters 
  of 
  the 
  local 
  

  

  lakes 
  were 
  united 
  into 
  one 
  broad 
  expanse 
  with 
  drainage 
  

  

  shifted 
  to 
  different 
  parts 
  of 
  the 
  basin. 
  

  

  A 
  final 
  and 
  second 
  epoch 
  of 
  local 
  lakes, 
  to 
  which 
  the 
  

   present 
  lakes 
  belong; 
  occupying 
  the 
  middle 
  and 
  northern 
  

   portions 
  of 
  the 
  valleys 
  with 
  free 
  drainage 
  northward. 
  

  

  The 
  conditions 
  further 
  indicate 
  a 
  brief 
  existence 
  in 
  the 
  static 
  

   waters 
  sustained 
  at 
  any 
  one 
  level. 
  This 
  is 
  made 
  manifest 
  from 
  the 
  

   character 
  of 
  the 
  shore 
  phenomena. 
  A 
  condition 
  miist 
  have 
  pre-, 
  

   vailed, 
  as 
  suggested 
  by 
  the 
  shore 
  material 
  and 
  deposits, 
  when 
  the 
  

   streams 
  delivered 
  large 
  volumes 
  of 
  water 
  and 
  were 
  given 
  accordingly 
  

   large 
  quantities 
  of 
  material 
  for 
  transportation 
  which 
  also, 
  was 
  prob- 
  

   ably 
  accompanied 
  by 
  rapid 
  deposition. 
  The 
  slight 
  development 
  of 
  

   the 
  probable 
  destructional 
  shore 
  features 
  and 
  the 
  entire 
  absence 
  

   of 
  constructional 
  beaches 
  without 
  the 
  faintest 
  trace 
  of 
  the 
  latter 
  

   found 
  at 
  any 
  one 
  of 
  the 
  levels 
  are 
  certainly 
  highly 
  indicative 
  of 
  

   brief 
  halts 
  at 
  any 
  one 
  level. 
  The 
  faint 
  and 
  slight 
  development 
  in 
  

   the 
  moraines 
  to 
  the 
  north 
  of 
  the 
  "Moraine 
  of 
  the 
  second 
  glacial 
  

   epoch 
  " 
  and 
  the 
  slight 
  depth 
  to 
  which 
  the 
  overflow 
  channels 
  have 
  

   been 
  eroded, 
  would 
  farther 
  strengthen 
  the 
  testimony 
  favoring 
  the 
  short 
  

   duration 
  of 
  any 
  one 
  of 
  the 
  numerous 
  lake 
  stages. 
  While 
  the 
  waters 
  

   were 
  sustained 
  at 
  any 
  one 
  level 
  for 
  a 
  comparatively 
  brief 
  time 
  they 
  

   were 
  probably 
  held 
  at 
  one 
  continuous 
  level 
  during 
  some 
  stages 
  for 
  

   a 
  longer 
  period 
  of 
  time 
  than 
  at 
  others, 
  as 
  manifested 
  in 
  the 
  unequal 
  

   strength 
  of 
  the 
  deltas 
  and 
  overflows. 
  The 
  characters 
  of 
  these 
  point 
  

   to 
  a 
  longer 
  stay 
  of 
  the 
  waters 
  at 
  the 
  Newberry 
  level 
  than 
  at 
  any 
  

   prior 
  or 
  subsequent 
  level 
  studied. 
  

  

  In 
  the 
  falling 
  of 
  the 
  waters 
  from 
  one 
  stage 
  to 
  the 
  next 
  lower, 
  the 
  

   subsidence 
  was 
  generally 
  slow 
  and 
  gradual, 
  leaving 
  records 
  of 
  

  

  