﻿GEOLOGICAL 
  SURVEY 
  OF 
  THE 
  STATE 
  OF^NEW 
  YORK. 
  

  

  (GEOLOGICAL 
  MAP.) 
  

  

  The 
  Economic 
  Geology 
  of 
  Albany 
  County. 
  

  

  James 
  Hall, 
  State 
  Geologist. 
  Fraxk 
  L. 
  Nason, 
  Assistant. 
  

  

  18 
  9 
  3 
  

  

  