* 6'SS.A 



MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA, 



VOLUME XXIV. 



Published by order of His Excellency the Governor General of India in 



Council. 



\c^A*^ 



CALCUTTA: 



SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY 



AND BY ALL BOOKSELLERS; 



LONDON : KEGAN PAUL, TRENCH, TRUBNER & Co. 



M DCCCXCI. 



