﻿GEOLOGICAL 
  SURVEY 
  OF 
  INDIA. 
  

  

  R. 
  D. 
  Oldham. 
  

  

  Memoirs 
  Vol. 
  XXIX, 
  PL 
  XXIII. 
  

  

  FIG. 
  1, 
  9, 
  HARRINGTON 
  STREET, 
  CALCUTTA. 
  

  

  Survey 
  of 
  India 
  Offioes, 
  Calcutta, 
  189S. 
  

   FIG. 
  2. 
  6, 
  ELYSIUM 
  ROW, 
  CALCUTTA. 
  

  

  