

MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA 



VOLUME XLII, PART 2. ^r^s^rr^, 



APR 29 1$ 



m 



The Structure of the Himalayas, and of the Gangetic 

 Plain, as elucidated by Geodetic Observations in 

 India. By R. D. Oldham, F.R.S. 



Published, by order of the Government of India. 



CALCUTTA : 

 SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY OF INDIA, 



27, CHOWRINGHEE ROAD. 

 LONDON ! MESSRS. KEGAN PAUL, TRENCH, TRUDNER & CO. 



1917. 



