1920] FORESTRY. 41 



State of Sao Paulo. Brazil. This tree, it is believed, through cultivation and se- 

 lection should prove of economic value, both as an ornamental and for its acid 

 fruit, which is locally used in making; cooling beverages, conserves, etc. 



Necessity of selecting stocks in citrus propagation, H. J. Webber {Cal. 

 Citroffr., 5 {1920), No. 6, pp. 177, 198, 199, figs. 5). — A summary of experiments 

 with citrus stocks conducted at the California citrus substation (E. S. R. 42, 

 p. 537), in which the author emphasizes the importance of producing seedling 

 stocks of known characters. 



Injurious effects of the windstorm of November 20, 1919, H. S. Reed 

 {Cnl. Citrogr., 5 (1920), No. 6, pp. 178, 200, 201, figs. 2).— A contribution from 

 the California citrus substation, discussing the nature and extent of injury 

 to citrus trees in certain localities in southern California during the three 

 days' windstorm which began on November 20, 1919. Tabular data are given 

 which show temperature, wind, and liumidity conditions at various stations 

 during the storm. 



Causes of decay in citrus fruits, O. F. Burger (Fla. Univ. Ext. Bui. 24 

 (1920), pp. 22-25). — A contribution from the Bureau of Plant Industry of the 

 U. S. Department of Agriculture, in which the author points out the relation 

 of faulty methods of picking, handling, and packing to the subsequent develop- 

 ment of fungi and bacteria in citrus fruits. 



The classification of chestnut varieties, D. Vigiani (Stas. Sper, Agr. Ital., 

 52 (1919), No. 5-6, pp. 266-277). — The author reviews different methods used 

 in classifying the European varieties of chestnuts and presents a classification 

 of 74 varieties, based primarily on the general form of tlie nut and secondarily 

 on the form of the apex. 



Pecan varieties, C. A. Reed (Proc. Natl. Nut Growers' Assoc.„ 18 {1919), pp. 

 36-41). — A description of the better-known varieties of pecans, including also 

 a classification of the varieties into groups. In these are separated varieties 

 proved to be adapted to a large portion of the pecan territory, varieties adapted 

 to the northern part of the pecan territory, new varieties, promising varieties, 

 less promising varieties, varieties of doubtful value, and those that should be 

 eliminated at once. 



Pecan grades and standards, C. A. Reed {Proc. Natl. Nut Grotvers' Assoc, 

 IS {1919), pp. 80-8.7).— This is the report of the committee appointed by the 

 National Nut Growers' Association to determine grades and standards for 

 pecans. It reviews work undertaken along this line by the U. S. Department 

 of Agriculture, and pi-esents the committee's recommendations relative to the 

 general principles involved in establishing sizes and grades. 



The crisis in medicinal plants and our African colonies, F. Cortesi 

 {1st. Colon. Hal., Mem. e Monog. Colon., Ser. Econ. No. 3 {1919), pp. 36).— 

 A compilation of official medicinal plants growing in Eritrea, Somali, and Libya, 

 logether with a bibliography and related commercial and statistical data. In 

 view of the world shortage of medicinal plants, the author recommends the 

 utilization of this hitherto practically unexploited source of supply. 



FORESTRY. 



The relation of research in forest products to forest administration, 



O. M. Butler {.Jour. Forestry, 18 {1920), No. 3, pp. 275-283).— A discussion of 

 research in forest products, with special reference to its influence upon forest 

 practices. 



Report of the department of forestry, K. W. Woodward (New Hampshire 

 Sta. Bui. 192 {1919), pp. 26, 27). — Growth data are given on 6 sample forest 

 ureas planted in 1912. Of tlie species planted, Scotch pine, European larch, and 



