﻿Plate 
  3 
  

  

  "*»>%y#ff' 
  

  

  

  Granville 
  quartzite 
  of 
  the 
  much 
  jointed 
  type 
  showing 
  its 
  characteristic 
  

   weathering. 
  The 
  Potsdam 
  lies 
  just 
  above 
  but 
  shows 
  poorly 
  in 
  the 
  view. 
  

   Locality 
  near 
  the 
  south 
  margin 
  of 
  the 
  Alexandria 
  Bay 
  quadrangle, 
  nearly 
  i 
  

   mile 
  south 
  of 
  Crystal 
  lake, 
  by 
  the 
  roadside. 
  H. 
  P. 
  Gushing, 
  photo, 
  1907 
  

  

  