﻿PLATE 
  XXXI.— 
  To 
  face 
  page 
  148. 
  

  

  N. 
  H. 
  Darton, 
  photo. 
  

  

  Upper 
  Gorge, 
  Trenton 
  Falls, 
  Oneida 
  Co. 
  Trenton 
  Limestone. 
  

  

  