MEMOIRS 



GEOLOGICAL SURVEY 



INDIA. 



VOL. VI., Pt. 3, 



PtTBLISHED BY OEDEE OF HIS EXCELLENCY THE &OVEENOE-Q-ENEEAL OF INDIA 



IN COUNCIL, 



TTITDEE THE DIBECTIOlf OP 



THOMAS OLDHAM, L. L. D., 



Fellow of the Royal and Geological Societies of London; Member of the Hoi/al Irish Accademy; 



Son. Mem, of the Leop. -Carol. Academy of Natural Sciences; of the Isis, Dresden; 



of the Boy. &eol. Soc. of Cornwall: Corr. Mem. of Zool. Soc, Zond-, Sfc,, ^c, 



SUPEBINTENDENT OF THE GEOIiOGICAL SUEVET OF INDIA. 



CALCUTTA: 



PEINTED FOE THE GOVEENMENT OF INDIA. 



SOLD AT THE 



GEOLOGICAL SURVEY OFFICE, 



OFFICE OF SUPERINTENDENT OP GOVERNMENT PRINTING, 



AND BY ALL BOOKSELLERS ; 



LONDON: WILLI4JVIS AND NORGATE. 



MDCCCLXIX. 



