﻿PLATE 
  LXXXI.— 
  To 
  face 
  page 
  1G4. 
  

  

  R. 
  S. 
  Tarr. 
  photo. 
  

  

  Lower 
  Portage 
  Shales, 
  Triphammer 
  Falls, 
  Ithaca, 
  Tompkins 
  Co. 
  

  

  