170 
Weeds Used in Medicine. _By | Alice F Henkel. Farmers’ Bulletin 
“No. 188. i: pp., 31 I figs. 1904. 
Peppermint. By Alice Henkel. In Bulletin 90, Bureau of 
ant Indust ' pp. 19-29, 3 figs. 1905. ae 5 cents. 
aes in Drug-Plant Cultivation. By Rodney H. True. 
n Yearbook of the Department of Agriculture if 1905, pp. 
533-540,3 pls. (Yearbook Separate No. 401.) Price, 5 cents. 
The Drug Known as Pinkroot. By W. W. Stockberger. Int 
Bulletin 100, Bureau of Plant Industry, pp. 41-44, 6 figs., 
2 pls. fi rice, 5 cents 
ee ee Curing Hops. By w. W. ents Farmers’ 
Bulletin 304. 39 pp., 20 figs. 19 
American Root Drugs. By tice. ne Bulletin 107, 
Bureau of Plant Industry. 80 pp., 25 figs., 7 pls. 
Price, 5 ce 
The Use a eer Glands in the Physiological Testing of 
Drug Plants. By Albert C. Crawford. Bulletin 112, Bureau 
of Plant Industry. 32 pp. 1907. Price, 5 cents. 
The Cultivation and Handling of Goldenseal. By Alice Henkel 
and G. Fred Klugh. Circular 6, Bureau of Plant Industry. 
, 7 figs. 1908. Price, 5 
Tre nee of ‘Aizen nic in Certain ene of Dried Hops. B 
. W. Stockberger. In Bulletin 121, Bureau of Plant In- 
a ete pp. 41-46. 1908. Price, 5 cents 
American Medicinal Barks. By Alice Henkel. Bulletin 139, 
Bureau of Plant Industry. 59 pp., 45 figs. 1909. Price, 
. 
15 ¢ 
eae ied of Headache Mixtures. By L F. Kebler, F. P. 
Morgan, and Philip Rupp. Farmers’ Bulletin 377. 16 pp. 
1909. 
The Necessity for New Standards of Hop Valuation. By W.W. 
tockberger. Circular 33, Bureau of Plant Industry. 11 pp 
1909. Price, 5 cents. 
Habit-Forming Agents eir ee Sale and Use 
Menace to the Public Welfare. By ebler. Farmers’ 
Bulletin 393. 19 pp., 5 figs. 1910 
