﻿REPOKT 
  OF 
  THE 
  DIRECTOR 
  

  

  rl41 
  

  

  The 
  sketch 
  of 
  a 
  cross 
  section 
  of 
  such 
  a 
  cliff 
  shows 
  these 
  features 
  : 
  

   The 
  drift 
  covered 
  ruck 
  with 
  a 
  perpendicular 
  front 
  and 
  a 
  gradual 
  

   slope 
  beneath 
  the 
  water 
  covered 
  with 
  material 
  from 
  the 
  shore, 
  and 
  

   the 
  shingle-strewn 
  beach 
  protecting 
  the 
  base 
  of 
  the 
  cliff. 
  See 
  fig. 
  4. 
  

  

  Fi5.4 
  

  

  Section 
  oj^a 
  wave 
  cut 
  

   teKKace. 
  

  

  At 
  several 
  points 
  the 
  cliff 
  is 
  interrupted 
  by 
  banks 
  of 
  drift. 
  

   On 
  examining 
  such 
  a 
  bank 
  it 
  is 
  noticed 
  that 
  the 
  rock 
  ends 
  and 
  the 
  

   gravel 
  begins 
  abruptly. 
  The 
  small 
  runlets 
  coming 
  into 
  the 
  lake 
  

   over 
  such 
  an 
  area 
  of 
  drift 
  may 
  have 
  cut 
  down 
  to 
  considerable 
  

   depth, 
  but 
  they 
  do 
  not 
  reach 
  the 
  bed 
  rock. 
  The 
  gravel 
  itself 
  is 
  

   entirely 
  without 
  stratification, 
  and 
  the 
  pebbles 
  striated 
  and 
  of 
  a 
  

   heterogeneous 
  character. 
  It 
  is 
  evident 
  that 
  these 
  are 
  preglacial 
  

   stream 
  courses, 
  completely 
  choked 
  by 
  drift. 
  An 
  excellent 
  example 
  

   is 
  seen 
  about 
  mid-way 
  between 
  Ludlowville 
  and 
  the 
  south 
  end 
  of 
  

   the 
  lake. 
  

  

  So 
  much 
  for 
  tlie 
  geology 
  and 
  topography 
  of 
  this 
  region. 
  Let 
  us 
  

   now 
  investigate 
  the 
  historical 
  side 
  of 
  the 
  problem. 
  

  

  What 
  is 
  the 
  origin 
  of 
  Cayuga 
  lake 
  ? 
  

  

  