MEMOIRS 



OF 



THE GEOLOGICAL SURVEY OF INDIA. 



VOLUME XXI, Part 3. 



}.lnblishcb bn oxbzx of (BxcziUnq) the (gobcruor (general of £nbui 



in (Eomtcil. 



CALCUTTA : 



SOLD AT THE OFFICE OF THE GEOLOGICAL SURVEY, 



AND BY ALL BOOKSELLEHS ; 



LONDON: TRUBNER & CO. 



