APPENDIX, | 131 
Growth of the Indian Linseed Trade. 
Dr. G. Watt (Diet. Econ, Prod, India, Vol. V., p. 76) shows thatthe 
trade has expanded from about 3 ewts. in 1832 to 8,461,374 ewts. 
in 1888-89. 
Erythroxylon Coca grown in India.* 
Several samples of Erythroxylon Coca leaves, grown in various 
districts in India, have been examined by Warden; the mode of 
culture, altitude, and meteorological characters of the district, the 
kind of soil and manuring, and the methods of curing being taken 
into consideration, The alkaloid was estimated by Squibb’s modified 
method: the dry pulverized leaves were moistened with alcohol 
acidified with sulphuric acid, percolated with alcohol, the percolate 
mixed with acidified water, and extracted with ether, then rendered 
alkaline with sodium carbonate, and again extracted with ether, This 
extract was washed twice with water, dried and weighed; the 
amounts of “ crude alkaloid” so determined are given in the follow- 
ing table :— 
Per cent. dry leaves, 
District where grown. Moisture. 
re aklaloia. 
Ranchi, young leaves .. se 618 6°71 1-139 
=. mature leaves... nj. BS 8°99 0883 
Arcuttipore, Cachar_ ... et 6-08 7°39 1:369 
ee 872 6°36 1-671 
Darjeeling see owe na gan oe 7°58 1115 
Alipore, Calcutta ee ect + ADA 10°23 0°358 
a se ey ei 080. Le 1-022 
Chulsa, Dooars... ves ete x71 7°62 0°610 
Jaunpore we wes beck cee 12°64 0-571 
* Chem. News, lviii., 249-251, 260-262,273-276 ; Journ., Chem.Sce., March, 1889, 
