﻿PLATE 
  6. 
  

  

  

  

  ;«ig*«:; 
  

  

  

  Trenton 
  Limestone 
  in 
  a 
  Quarry 
  at 
  Holland's 
  Mill, 
  Saratoga 
  County, 
  N. 
  T. 
  

  

  