﻿R. 
  D. 
  Oldham. 
  

  

  GEOLOGICAL 
  SURVEY 
  OP 
  INDIA. 
  

  

  Memoirs 
  Vol. 
  XXIX, 
  PI. 
  XXXIII. 
  

  

  im 
  

  

  

  Frurrt 
  N 
  SLoit 
  

  

  o 
  

  

  'O 
  

  

  o- 
  

  

  77«/r 
  showing 
  position 
  of 
  2-3° 
  ' 
  4-dnd 
  5- 
  blocks 
  

   from 
  top 
  of 
  obelisk 
  

  

  

  WILLANS 
  MEMORIAL, 
  SHILLONG. 
  

  

  