﻿PLATE 
  XCI.— 
  To 
  face 
  page 
  17z 
  

  

  J. 
  N. 
  Nevius, 
  photo. 
  

  

  Reptilian 
  Footprints 
  on 
  Triassic 
  Sandstone, 
  Turner's 
  Falls, 
  

   Mass. 
  Original 
  Slab 
  IS 
  Inches 
  by 
  27 
  Inches. 
  

  

  