HORTICULTURE. 745 



showing? the composition of a Iaijj;e luiuiber of varieties of grai)es, with sjjecial 

 reference to the density of the must and the content of sugar, acid, and ash. 

 Analyses are also given of wines, vinegars, and ciders derived from the grapes, 

 together with data showing the average size of fruit of each variety and the 

 I)roi)ortion of stems, skins, and seeds. 



Studies on native fruits. — II, Peaches, pears, and plums, J. I'uig y Nat- 

 TiNo (Mill. Indus. [UnHnuni], Insp. A'«r. (Jaiiaderia y Agr. Bol. 13 (1914), pp. 

 77. />/v. S(), fliiH. 10). — In continuation of the above work data are here presented 

 for different varieties of poaches, pears, and plums relative to their sugar, acid, 

 protein, and ash content, the average weight of fruit, and the projxirtion of 

 waste material. Outline drawings are given showing the general shape of many 

 of the varieties. 



A basis for the future classification of the mango, F. W. Popenoe (Proc. 

 Aiiivr. PoiiioJ. »9ot'., 1913, pp. 41-^7, pix. 2, fig. 1). — In this paper the author 

 presents suggestions relative to the description and classification of mangoes, 

 togetlier with a bib!iofj;ra])hy of literature dealing with mangoes. 



The handling' of Porto Rican oranges, grapefruit, and pineapples, C. W. 

 Mann (/'o/-/o Rico Bd. Agr. Expt. t^ta. Bui. 7 [1914), pp. 59, figs. 2.^).— During 

 the shipping season of 1913-14 the losses from decay in cargoes of oranges, 

 grapefruit, and pineapples shipped from Porto Kico to New York were so severe 

 that the U. S. Department of Agriculture conducted an investigation in behalf 

 of Porto Rican growers to determine the causes of this decay. Some data are 

 presented showing the percentage of decay found in several lots of grapefruit 

 and oranges, and an account is given of an inspection made in Porto Rico rela- 

 tive to methods of handling the fruit in groves and packing houses and in 

 transportation to the steamers, together with recommendations for improving 

 these practices as well as improving the methods of handling fruit during 

 transiwrtatiou and in New York. The results of the investigation as a whole 

 indicate that as with the work in California and Florida (E. S. R., 20, p. 43; 

 30, p. S41) there is a close relation between the occurrence of decay and the 

 character of the methods employed in picking, packing, and transporting fruit. 



Statistical data covering several years are given showing the growth of the 

 citrus and pineapple industries in Porto Rico. 



[Experiments on the applicability of cold storage to various tropical 

 fruits], E. V. Wilcox {Haiiuii /S7rt. Rpt. 1914, P- 23). — A brief statement of 

 progress. The work has been noted more in detail from another source 

 (E. S. R., 32, p. 439). 



Tropical fruits in the Philippines, P. J. Wester (Proc. Amer. Pomol. Soc, 

 1913, pp. S8-91). — A short account of the more important fruits and the present 

 status of fruit growing in the Philippines. 



[Cacao investigations at River Estate], P. Carmody (Bui. Dept. Agr. Trini- 

 dad and Tobago, 13 (1914), No. S4. pp. 312-319). — Data are given showing the 

 comparative yields for a 4-year period of 100 individual cacao trees. The 

 results, as a whole, indicate an inherent productivity for individul trees. Data 

 are also given showing the yields on the various cacao manurial plats for 

 the 4-year period 1910-11 to 1913-14. 



Cocoa, C. J. J. VAN Hall (London: Macmillan and Co., Ltd., 1914, PP. XVI + 

 515, figs. 14O). — A handbook on cacao in which the successive chapters discuss 

 the history of the cocoa industry; geographical distribution and climatic con- 

 ditions; the chemistry of cacao and cacao soils; the botanical characteristics 

 of the cacao plant ; varieties of cacao ; the cultivation of cacao ; fermentation, 

 wa.shing, and drying; diseases and enemies; cacao growing countries; com- 

 merce ; and notes on the cocoa and chocolate industry. 



