﻿BULLETIN 
  NO. 
  322 
  PL. 
  IX 
  

  

  | 
  SHALE 
  IN 
  CASMALIA 
  HILLS, 
  

   orthwest. 
  Photograph 
  by 
  Ralph 
  Arnold. 
  

  

  !ION 
  OIL 
  COMPANIES' 
  WELLS. 
  

  

  in 
  distance. 
  Photograph 
  by 
  Ralph 
  Arnold. 
  

  

  