﻿Plate 
  6 
  

  

  \V. 
  J. 
  Miller, 
  photo 
  

   A 
  group 
  of 
  " 
  potholes 
  " 
  in 
  the 
  bed 
  of 
  Sugar 
  river 
  Yz 
  mile 
  below 
  

   the 
  railroad 
  crossing. 
  The 
  rock 
  is 
  Black 
  River 
  limestone. 
  

  

  