j4 . Y ^ -3 . • - MY 
MEMOIRS 
OF 
THE GEOLOGICAL SURVEY OF INDIA. 
VOLUME XXXVI, PART 2. 
The Geology of the Provinces of Tsang and U in 
Central Tibet. By H. H. Hayden, B.A., B.E., F.G.S., 
Superintendent, Geological Survey of India. 
Published by order of the Government of India. 
CALCUTTA : 
SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY, 
27, Chowbinghee Road. 
LONDON : MESSRS. KEGAN PAUL, TRENCH, TRUBNER & CO., 
BERLIN : MESSRS. FRIEDLANDER UND SOHN. 
1907. 
Siiei oUtvpeo o« 4». 
