210 
‘‘ American Medicinal Leaves and Herbs,’’ by A. Henkel, U.S. 
Dept. of Agriculture, Bureau of Plant Industry, Bulletin No. 
219, 1912. 
“The Cyltivation of Drug Plants in the United States,’’ by 
R. H. True, U.S. Dept. of Agriculture, Year Book, 1903, pp: 
337-346. 
The Commercial Possibilities in Growing Medicinal Plants,”’ 
by F. A. Miller, in Lilly Scientific Bulletin, No. 5, April, 1914, 
pp. 163-168. 
“The Cultivation of Modicival Plants,” by J. A. Borneman, 
in American Journal of Phar rmacy, Dec., 1912, pp- 546-553. 
‘The British Pharmacopeia.’’ Published under the direc- 
tion of the General Council of Medical Education and Registra- 
tion of the United Kingdom, pp. 1-602. (Constable & Co., Ltd., 
London, 1914.) 
“ Potter’s Cyclopedia of Botanical Drugs and Preparations,” 
by R. C. Wren, pp. 1-339. (Potter & Clarke, Ltd., London, 1914.) 
DYEING AND TANNING MATERIALS. 
ry came (small hemipterous insects fed on species of Opuntia 
and Nopalea). 
Forri1cn.—Canary Islands, from whence in 1914 this ane 
imported 2010 ewts., value £20, 122, with 624 cwts., value £5,189, 
from other Foreign. Countries 
Mexico, Guatemala, Java, &e. ., also produce this dye, and the 
plant and insect haves been introduced to Algeria, Australia and 
India. See also A.B. 1888, p. 170. 
Indigo (Indigofera tinctoria, L., and I. arrecta, Hochst.). 
Britisu.—India, Forergn.—Java, &e. 
The imports from British India to the United Kingdom in 1913 
were 3646 cwts., value £48,208, the total imported from all 
sources in the same year being 4174 ewts., value £54,739. The 
total amount of indigo Pere in 1915 from all sources was 
25,157 ewts., value £1,256,712. 
Pidociors arrecta 1s largely grown in Africa, and as a source 
of Indigo was recommended (1905) by the Director, Royal Botanic 
Gardens, Kew, to the Government of S. Nigeria for “devs suid 
there in preference to J. tinctoria. It was introduced to Java 
from Natal, and in India, according to Coventry (Watt, Comm. 
rod. India), the Java plant shows an increase of 35 per cent. in 
the amount of green plant cut per acre, and of 45 per cent. in- 
crease,in vat produce over the ordinary plant of the United 
Provinces. 
Indigofera tinctoria is cultivated for commercial purposes, 
chiefly in India—Bengal, Madras, Bombay, Sind, &c.—and to 
some extent in the Straits Settlements, British Honduras, 
Philippine Islands, Central America, Colombia, and for local use 
erey id ey countries, including probably the whole of 
Tropical Africa 
a 
