﻿PLATE 
  XVII.— 
  To 
  face 
  page 
  140. 
  

  

  J. 
  N. 
  Nevius, 
  photo. 
  

  

  Empire 
  Marble 
  Co.'s 
  Quarry 
  Near 
  Gouverneur, 
  St. 
  Lawrence 
  Co. 
  

  

  Precambrian. 
  

  

  