242 EXPERIMENT STATION EECORD. 



A bibliography of department publications dealing with drug plants is 

 appended. 



Experiments in hybridizing Japanese flowers which appear to show a 

 variation in Mendel's law, W. P. Jenny (Set. Amer. Sup., 79 (1915), No. 2036, 

 pp. 18, 19; ahs. in Sci. Amer., 112 (1915), No. 8, p. 182).— The author found that 

 the dry pollen of the white moonflower applied to the stigma is inert, and will 

 not fertilize the ovary unless the pollen be wet with the fluid excreted upon 

 the surface of the stigma of the moonflower. This discovery led to the series 

 of experiments here described, in which the Japanese morning-glory was crossed 

 with the white moonflovs^er. As a result of these experiments, extending over 

 several years, it is concluded that hybrids of Japanese morning-glory with the 

 white moonflower are subject to Mendel's law in only a limited way, if at all. 

 This is believed to be due to the influence of the fluid excreted by the stigma 

 of the moonflower. Crosses between the Japanese and American morning- 

 glories arising from pollination by insects follow Mendel's law. 



Dwarf evergreens, G. V. Nash (Jour. N. Y. Bot. Oard., 16 (1915), No. 183, 

 pp. 47-61, pis. 2). — The author briefly discusses the selection and care of ever- 

 greens, and gives short descriptions of a number of dwarf evergreens, both 

 coniferous and broad-leaved, which may be readily procured. Lists of evergreens 

 for special purposes or conditions are also given. 



Lime and sulphur solutions, G. E. Stone (Massachusetts Sta. Circ. 53 (1915), 

 pp. 2). — This is a revision of Circular 39 of the same series (E. S. R., 32, p. 338). 



FORESTEY. 



The National Forests and the farmer, H. S. Graves ( U. S. Dcpt. Agr. Year- 

 hook 1914, PP- 65-88, pis. 6). — In this paper the author calls attention to many 

 ways in which the National Forests influence the welfare and development of 

 agricultural communities. Among the special benefits to the farmer here dis- 

 cussed are the benefits through protection of water resources, through sup- 

 plies of forest products, from grazing privileges, direct and indirect benefits 

 from the establishment and maintenance of various industries utilizing the 

 resources of the forests, and the benefits from public improvements built by the 

 Government. 



The farm woodlot problem, H. A. Smith (U. S. Dept. Agr. Yearbook 1914, 

 pp. 430-456, pis. 8). — An economic discussion of the farm woodlot problem in 

 which consideration is given to the question of taxes, woocllots as sources of 

 wealth, marketing difficulties, how the farmer may protect himself in marketing 

 timber, and woodlot values, present and future. 



The new Massachusetts forest taxation law, F. W. Rane (Boston: State 

 [1915], pp. 35, pis. 8). — This pamphlet contains the full text, with explanation, 

 of the Massachusetts forest taxation law passed in the spring of 1914. 



Natural reforestation in the mountains of northern Idaho, H. B. Humphbey 

 and J. E. Weaver (Plant World, 18 (1915), No. 2, pp. 31-41, figs. 9).— The 

 authors here present the results of a study of various types of natural reforesta- 

 tion as observed in the mountains of northern Idaho. 



[Report of progress on] forestry (Missouri Sta. Bui. 131 (1915), pp. ^78, 

 419). — A concise statement of progress made in forest investigations, carried 

 on by E. C. Pegg during the year ended June 30, 1914. 



With the view of studying the methods of prolonging the service of wood 

 fence posts about 550 posts, representing 25 species, were set in 1913. Exami- 

 nation at the end of the first year showed no evidence of decay or fungus 

 growth. Persimmon, honey locust, and a few cofCee-beau posts showed damage 



