﻿GEOLOGICAL 
  SURVEY 
  OF 
  INDIA. 
  

  

  R.D. 
  Oldham. 
  

  

  Memoirs, 
  Vol 
  XXDLH.XL. 
  

  

  1. 
  Declination. 
  

  

  Fig. 
  2. 
  Horizontal 
  force 
  

  

  lig. 
  3. 
  Vertical 
  force. 
  

  

  Floto- 
  etcljing. 
  Survey 
  of 
  India 
  Offices, 
  Calcutta, 
  Maj, 
  1899. 
  

  

  RECORDS 
  OF 
  THE 
  MAGrTE 
  TO 
  GRAPHS 
  AT 
  BOMBAY. 
  

  

  