748 A TEXT-BOOK OF BOTANY. 



for all future crops with some certainty as to their market value. 

 Experience has shown that cultivated crops command a higher 

 price than the drugs obtained from wild plants, even though their 

 superiority cannot always be demonstrated by analytical means. 

 For instance, no one is trying to determine by an analytical proc- 

 ess whether any given lot of tobacco, tea, or coffee is of superior 

 value, and yet the competent dealer and the discriminating public 

 even recognize the qualities of the grades that are offered. This 

 is even more marked with the products that have been derived 

 thus far from cultivated medicinal plants, and are appreciated by 

 some pharmacists and physicians. 



BIBLIOGRAPHY. 



Cultivation of Belladonna : Vreven and Schreiber, Schweiz. Wochenschr. 

 Chcm. It. Pharm..igji,p. 37^; Borneman, Amer. Jour. Pharm., 1912, p. 

 549; Miller, Ibid., 1913, p. 291, also Bull. Torrey Bot. Club, 1914, p. 118; 

 Carr, Amer. Jour. Pharm., 1913, p. 487; Newcomb, Ibid., 1914, p. 531, 

 and 1915, p. I ; Sievers, Ibid., 1914, pp. 97 and 483, and 1916, p. 193. 



Cultivation of Digitalis: Farr, Pharm. Jour., 1907, XXIV., p. 198: 

 Newcomb, Amcr. Jour. Pharm., 1911, p. 529; Borneman, Ibid., 1912, 

 p. 547; Miller, Ibid., 1913. P- 297. 



Cultivation of Hydrastis: John UrI Lloyd, Proc. A. Ph. A., 1905, p. 

 307, and in Jour. A. Ph. A., Vol. I, p. 5 ; Alice Henkel and G. Fred. 

 Klugh, Circ. No. 6, Bureau of Plant Industry, U. S. Department of 

 Agriculture; J. C. Baldwin, Amcr. Jour. Pharm., April, 1913, p. 147. 



Cultivation of Ginseng: George V. Nash, Bulletin No. 16, Division of 

 Botany, U. S. Department of Agriculture. 



Cultivation of Eucalyptus: A. J. McClatchie, Bulletin No. 35, Bureau 

 of Forestry. U. S. Department of Agriculture. 



Cultivation of Hyoscyamus: Mitlacher, Zcitschr. Oest. Apoth. Ver., 

 1912, p. 401 and Pharm. Post, 191 1, p. 214; Borneman, Am..er. Jour. 

 Pharm., 1912, p. 551; Miller, Ibid., 1913. p. 295; Carr, Ibid., 1913, p. 

 487; Newcomb, Ibid., 1914, p. 531, and 1915, p. i; Newcomb and 

 Haynes, Ibid. 1916, p. i. 



Cultivation of Peppermint: A. M. Todd, Proc. A. Ph. A., 1903, p. 277; 

 Alice Henkel, Bulletin No. 90, Bureau of Plant Industry, U. S. De- 

 partment of Agriculture. 



Cultivation of Cannabis Sativa : C. R. Eckler and F. A. Miller, Amer. 

 Jour. Pharm., November, 1912. 



Cultivation of Camphor: Circ. No. 12, Division of Botany, U. S. De- 

 partment of Agriculture. 



Cultivation of Tea : Bulletin 234, Bureau of Plant Industry, U. S. De- 

 partment of Agriculture. 



