﻿FIG. 
  20. 
  

  

  To 
  face 
  p. 
  92. 
  

  

  76°25' 
  

  

  ^a^Ho' 
  

  

  4.2035' 
  

  

  The 
  North 
  Lansing 
  Overflow. 
  The 
  Most 
  Northerly 
  Outlet 
  to 
  Glacial 
  

   Lake 
  Groton 
  Leading 
  Into 
  Glacial 
  Lake 
  Ithaca. 
  (Based 
  on 
  the 
  Unfin- 
  

   ished 
  Moravia 
  Topographic 
  Sheet, 
  U. 
  S. 
  G. 
  S., 
  Contours 
  100 
  Feet.) 
  

  

  