VOL. 111. PART IV. 
THE 
INDIAN FOREST 
RECORDS 
Note on the Preparation of Tannin Extracts 
With special reference to those prepared from the bark 
of Mangrove (Rhizophora mucronata) 
BY 
PURAN SINGH, f.c.s., 
Chemist at the Forest Research Institute, Dehra Dun, India. 
Published by Order of the Government of India 
CALCUTTA 
SUPERINTENDENT GOVERNMENT PRINTING, INDIA 
Published in July 1912 
