﻿GEOLOGICAL 
  SURVEY 
  OF 
  INDIA, 
  

  

  R. 
  D. 
  Oldham. 
  

  

  Memoirs 
  Vol. 
  XXIX, 
  Pl.XXIV. 
  

  

  1 
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  FIG. 
  L. 
  No. 
  114, 
  CIRCULAR 
  ROAD, 
  CALCUTTA. 
  

  

  Survey 
  of 
  India 
  Offices, 
  Calcutta, 
  

   FIG. 
  2. 
  HOUSE 
  IN 
  BENTINCK 
  STREET, 
  CALCUTTA. 
  

  

  