y g ^ 



MEMOIRS 



OF THE 



GEOLOGICAL SURVEY OF INDIA. 



Vol. XXVIII. 



Published by order of His Excellency the Governor General of India 



in Council. 



l^SY 



CALCUTTA: 



SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY. 



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



HC M. 



