GEOLOGICAL SURVEY OF INDIA. 



Memoirs, Vol XLVII. PI. 6 



..* 



FIG. 1. BACK VIEW OF LEAD BLAST FURNACES IN THE MING-KUAN, (Showing blower) 



P holographs by /. Coggin Brown, 



G. S /. Calcutta. 



FIG. 2. FRONT VIEW OF LEAD BLAST FURNACES IN THE MING-KUAN 



