1918] FORESTRY. 347 



best quality. In making the incision, a ring of bark is removed from either the 

 trunks, arms, or canes of the vines. 



The department is studying further cultural details. Only one variety of 

 currant, the Panariti, is recommended for planting. Other dark-colored 

 varieties hitherto tried in California have proved worthless. 



Raspberry culture, G. M. Dakrow {U. S. Dept. Agr., Farmers' Bui. 8S7 

 {1917), pp. 44< fid'"^- •?3). — A treatise on raspberry culture based on practices 

 which have proved highly successful in different sections. The author discusses 

 the types of raspberries, extent and distribution of raspberry growing, location 

 of a plantation, site of a plantation, preparing the land, planting, moisture sup- 

 ply in the soil, intercropping, tillage, maintenance of fertility, systems of train- 

 ing and pruning, winter protection, duration of a plantation, harvesting, yieULs, 

 diseases and insects, propagation, varieties, and uses. 



Indian tea: Its culture and manufacture, C. Bald {Calcutta: Thacker, Spink 

 d Co., 1911, 3. ed., pp. S73, pZ.s. 27, figs. 9).— The present edition of this; work 

 (E. S. R.. 21, p. 335) has been revised, partially rewritten, and somewhat en- 

 larged. 



Notes on the production and commerce of cacao, M. Calmon du Pin e Al- 

 MEDiA {Notas Acerca da ProducQdo e Commercio do Cacau. Rio de Janeiro: Soc. 

 Nac. Agr., 1917, pp. 21; J or. Com. [Rio de Janeiro^, 91 {1917), No. 160, pp. 3, 

 Jf). — A statistical account of the world's cacao industry, including data on pro- 

 duction, consumption, import taxes, etc., in different countries. 



The data palm in Egypt, T. W. Brown {Agr. Jour. Egypt, 5 {1915), No. 1-2, 

 pp. 63-79, pi. 1; 6 {1916), pp. 18-38, pis. 6).— Part 1 of this article discusses the 

 methods of propagating the date palm, planting, and subsequent care, including 

 methods of pollinating the female trees ; part 2 treats in detail of the various 

 kinds of dates grown and their relative commercial importance. 



South. American markets for dried fruits, W. Fischer {U. S. Dept. Com., 

 Bur. Foreign and Dom. Com.. Spec. Agents Ser., No. 148 {1917), pp. 35). — This 

 is a short survey of the dried-fruit trade in South America, based on data 

 gathered and observations made during the season 1915-16 in connection with 

 an investigation of the fresh-fruit markets of that continent (E. S. R., 37, 

 p. 345). The present report discusses the purchasing power and the customs, 

 tastes, and needs of the people, the current high prices, and the sources from 

 which dried fruits are obtained, as factors determining the total consumption 

 and the small share supplied by the United States. There are supplementary 

 sections on California fruits in South America and on methods of distribution. 



FORESTRY. 



Incidental results of a study of Douglas fir seed in the Pacific Northwest, 

 C. P. Willis {Jour. Forestry, 15 {1917), No. 8, pp. 991-1002).— In connection 

 with the collection and drying of cones for a study of Douglas fir seed during 

 the fall of 1912 a number of incidental experiments were conducted and are 

 here discussed. 



With reference to the proper time to collect cones, it was found that a con- 

 siderable amount of good seed may be procured from cones entirely green in 

 color, although the largest quantity of good seed is not obtained by this pro- 

 cedure. It seems satisfactory to collect cones when they first begin to assume 

 a brownish hue. Actual tests indicate that in picking cones it is wise to take 

 from a given tree only the larger, better developed cones. Large cones pro- 

 duce large seed and small cones small seed. The large seed was found to have 

 a much higher germination percentage. 



