180 Journal of the Mitchell Society [February 



PUBLICATIONS OF THE UNITED STATES DEPART- 

 MENT OF AGRICULTURE ON DRUG PLANTS, ETC. 



publications available for free distribution. 



Weeds Used in Medicine. Bj Alice Henkel. Pp. 45, figs. 31. 1904. 

 (Farmers' Bulletin 188.) 



Growing and Curing Hops. By W. W. Stockberger. Pp. 39, figs. 

 20. 1907. (Fanners' Bulletin 304.) 



Harinfulness of Headache Mixtures. By L. F. Kebler, F. P. Mor- 

 gan, and Philip Rupp. Pp.16. 1909. (Farmers' Bulletin 377.) 



Habit-Forming Agents : Their Indiscriminate Sale and Use a 

 Menace to the Public Welfare. By L. F. Kebler. Pp. 19, figs. 5. 

 1910. (Farmers' Bulletin 393.) 



The Cultivation of American Ginseng. By Walter Van Fleet. 

 Pp. 14, figs. 3. 1913. (Farmers' Bulletin 551.) 



Golden Seal Under Cultivation. By Walter Van Fleet. Pp. 15, 

 figs. 5. 1914. (Farmers' Bulletin 613.) 



The Source of the Drug Dioscorea, with a Consideration of the Di- 

 oscorese Found in the United States. By Harley Harris Bartlett. 

 Pp. 29, figs. 8, 1910. (Bulletin 189, Bureau of Plant Indus- 

 try) 



Some Effects of Refrigeration on Sulphured and Unsulphured 

 Hops. By W. W. Stockberger and Frank Rabak. Pp.2]. 1912. 

 (Bulletin 271, Bureau of Plant Industry.) 



publications for sale by the superintendent of documents. 



The Adulteration of Drugs. By Lyman F. Kebler. Pp. 251-258. 



1904. (Separate 331, from Year Book of the Department of 



Agriculture, 1903.) Price, 5 cents. 

 Peppermint. By Alice Henkel. Part 3, pp. 19-29, figs. 3. 1905. 



(From Bulletin 90, Bureau of Plant Industry.) Price, 5 cents. 

 Wild Medicinal Plants of the United States. By Alice Henkel. 



Pp. 76. 1906. (Bulletin 89, Bureau of Plant Industry.) Price 



5 cents. 

 American Root Drugs. By Alice Henkel. Pp. 80, figs. 25, pis. 7. 



1907. (Bulletin 107, Bureau of Plant Industry.) Price, 15 



cents. 



