192 TWENTY-FIRST REPORT. 



aconite. Several good practical papers have beeu published on the cultivation 

 of digitalis, namely, one by Newcomb and another by Borneman. Some facts 

 regarding the growing of Hydrastis from seed are given in a bulletin of the 

 Bureau of Plant Industry, U. S. Department of Agriculture, by Alice Henkel 

 and G. Fred Henkel and G. Fred Klugh. The subject of growing ginseng 

 from seed is also considered in a bulletin of the Division of Botany, U. S. 

 Department of Agriculture, by George V. Nash. At the present time there is 

 considerable interest in the growing of Eucalyptus globulus and other species 

 of Eucalyptus, the seeds of which can be obtained from J. M. Thorburn and 

 Company, New York City. A very valuable monograph on "Tlie Eucalyptus 

 Cultivated in the United States" was prepared by A. J. McClatchie, and pub- 

 lished as Bulletin No. 35 of the Bureau of Forestry, U. S. Department of Agri- 

 culture. In addition to these special plants which have been mentioned there 

 are a large number of .plants yielding medicinal products which are grown 

 from seeds and require no more care than the usual garden plants. Among 

 these are Calendula, Chrysanthemum rosciim, Echinacea, and a number of 

 plants grouped under sweet, pot, and medicinal herbs. 



Propagation hy Cuttings. This is a common method of propagating plants. 

 A cutting is a severed portion of a stem having one or more nodes or buds. 

 They are derived from overground shoots, as in the carnation, rose, geranium, 

 and coleus, or where the plant produces rootstocks or rhizomes, they are made 

 from these rather than from the overground shoots. In propagating plants 

 from rhizomes the latter are cut into pieces, each of which has one or two 

 buds, and these pieces are planted. The propagation by means of cuttings or 

 rootstocks is extensively carried on in the cultivation of peppermint. A. M. 

 Todd, who has been growing peppermint on a very extensive scale, has given 

 in some detail the method of propagating this plant in an article published 

 in the Proceedings of the A. Ph. A. for 1903, P. 277. A later article on the 

 cultivation of peppermint in the United States is one prepared by Miss Henkel 

 and published as Bulletin No. 90, Bureau of Plant Industry, U. S. Department 

 of Agriculture. Hydrastis is another drug, the plant of which is commanding 

 considerable interest and is being propagated by means of rhizomes. There 

 are three good articles which treat of the practical cultivation of Hydrastis, 

 namely : one by John Uri Lloyd in Proceedings of the A. Ph. A. 1905, p. 307 ; 

 another by Alice Henkel and G. Fred Klugh, in Circular No. 6, Bureau of 

 Plant Industry, U. S. Department of Agriculture ; and a third by J. C. Baldwin 

 in Tlie America/n Journal of Pharmacy, April, 1913. 



• In the case of both ginseng and Hydrastis one-year-old plants are fre- 

 quently supplied by growers and while taking everything into consideration 

 this is not desirable, yet there may be conditions where, for experimental pur- 

 poses, they may be used. It should be emphasized that it is not merely a 

 matter of getting rhizomes or young plants but a very careful study should be 

 made of the soil and light conditions which favor the maximum returns from 



