﻿Plate 
  52 
  

  

  Triphammer 
  falls 
  and 
  gorge 
  at 
  the 
  edge 
  of 
  Cornell 
  University 
  campus, 
  

   Ithaca, 
  N. 
  Y. 
  The 
  rocks 
  are 
  dark, 
  thin 
  bedded 
  shales 
  of 
  Lower 
  Portage 
  

   (Devonic) 
  age. 
  The 
  gorge 
  is 
  postglacial 
  in 
  origin. 
  

  

  From'N. 
  Y. 
  State 
  Mus. 
  Bui. 
  19, 
  pi. 
  81 
  

  

  