MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA 



VOLUME XLII, PART 2. 



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 oi India. 



CALCUTTA : 

 SOLD AT THE OFFICE OF THE GEOLOCICAL SURVEY OF INDIA, 



27, CHOWRINGHEE ROAD. 

 LONDON : MESSRS. KEGAN PAUL, TRENCH, TRUBNER & CO. 



1917 



