HISTORY AND BIBLIOGRAPHY 855 



True, R. H. Cultivation of drug plants in the United States. 

 Trbk. U. S. Dept. Agr. 1903: 337-346. 



Medicinal, condimental and aromatic plants. Cy. Am. Agr. 

 2 :458-467. 



Progress in drug plant cultivation. Yrbk. U. S. Dept. Agr. 

 1905 : 532-540. . (Domestication of wild drug plants, 534-535 ; 

 Utilization of weeds, 535-536.) 



Weschke, C. The enumeration of the medicinal plants of Minne- 

 sota. Phar. Rund. 8:155-157. 



Young, T. B. American Wormseed {Chenopodium anthelndnti- 

 cum)'. Cy. Am. Agr. 2:466. i 



WEED SEEDS. 



Ball, C. R. The purity and vitality of grass seed. BuU. la. Agr. 

 Exp. Sta. 54:164-180. 



Ball, 0. M. AlfalEa seed testing. Bull. Tex. Agr. Exp. Sta. 81 :15. 



Beach, C. L. The viability of weed seeds in feeding stuffs. Bull. 

 Vt. Agr. Exp.^Sta. 138:11-20; ! 



Beal, W. J. Seeds of Michigan Weeds. Bull. Mich. Agr. Exp. Sta. 

 260:101-182. 

 Testing Seeds. Rapt. Mich. Bd. Agr. 1877: 377-392. 

 Vitality and growth of seeds buried in the soil. Proc. See. 

 Prom. Agr. Sci. 10:15-16. 



The vitality of seeds.' Proc. Soc. Prom. Agr. Sci. 26 :89-93. 

 The vitality of seeds buried in the soil. Agr. Sci. 8:284. 

 Proc. Soc. Proip.; Agr. Sci. 6:14-15; 15:283. Rept. Mich. Bd; 

 Agr. 1884: 332-334. 



The vitality of seeds twenty years in the soil. Proc. Soc. 

 Prom. Agr. Sci. 20:86-87. 



Bessey, B. A. Seed analysis for 1911 and 1912. Bull. Mich. Agr. 

 Exp. Sta. 270:71-98. 



Boynton, M. F. Observations upon the dissemination of seed^ Bot. 

 Gaz. 20:502-503. 



Brown, Edgar. Legal and customary weight per bushel of seeds. 

 Bull. U. S. Dept. Agr. 51 :27-34. 



Brown, E., & Hillman, F. H. Seeds of. red clover and its im- 

 purities, -^^ar. Bull. U. S. Dept. Agr. 169:24. 



Burchard, 0.. Die Unkrautsamen der Klee-und Grassaaten. mit 

 besonderer Beriicksiehtigung ihrer Herkunft. 100, 5 pi. Ber- 

 lin, 1900. , , r'i 



