HORTICULTURE. 561 



Edible and poisonous fungi, F. Cavara (Funghi mangerecei e fuughi velenosi. 

 Milan : U. Hoepli, 1S97, pp. SOS, pis. 43). 



The agricultural chemistry of the cacao (Theobroma cacao), J. B. Harrison 

 (The Hocks and Soils of Grenada and Carriacou, and the Agricultural Chemistry of Cacao. 

 London : Waterloo <('" Sons., Ltd., 1896, pp. 30-56). — This is a quite extensive study of 

 the composition of the whole fruit and different parts of the fruit of a nuuiher of 

 varieties and of the changes which the beans undergo in fermentation and curing, 

 and an account of a fungus disease known as black cacao. 



Tea culture in the Caucasus, G. Vadarski (Yyestnik Lmper. Ross. Obsh. Sa- 

 dovdstva, 1896, pp. 439-453). 



Experiment station tests of new strawberries, B. F. Smith (Amer. Card., 18 

 (1S97), No. 151, p. 774). — The author believes that at least 50 plants of any variety 

 should be grown before deciding upon its merits. He also criticizes the way in 

 which the quality, productiveness, etc., are reported, and believes that some old 

 variety should be chosen as a standard of quality, some other old variety as a 

 standard of productiveness, etc., and the new varieties compared with the standards. 



Influence of plant food on the quality and properties of fruit, H. E. Stock- 

 bridge (Georgia State LTort. Soc, 1S97, pp. 20-25). — A discussion of the respective 

 effects of nitrogen, potash, and phosphoric acid on the growth of plants and qual- 

 ity of fruit. A table showing the potash and phosphoric acid content of a number 

 of fruits is the basis of the author's belief that there is a definite relation between 

 the ratio of potash to phosphoric acid and that of sugar to acid in fruits. 



Olive culture in the United States, N. B. Pierce ( U. S. Dept. Agr. Yearbook 

 1896, pp. 371-390, pi. 1, figs. 4). — The paper treats of the status of the industry in the 

 United States, methods of propagation, location of orchards, planting, pruning, 

 pollination, character of fruit, selection of varieties, extraction of oil, pickling, 

 diseases, etc. The author believes that olives could be profitably grown on the 

 great area of dry hillsides in California. The conditions in these localities are very 

 similar to those in parts of Italy and Sicily where olives are grown. The method 

 of culture employed in these countries is given. As regards the necessity of cross 

 pollination, experiments in California have shown that some varieties are perfectly 

 self-fertile, while others are entirely self-sterile. 



Methods of propagating the orange and other citrus fruits, 11. J. Webber 

 (U. S. Dept. Agr. Yearbook 1896, pp. 471-488, figs. 13).— The principal methods of 

 propagation employed by citrus nurserymen and growers in Florida are described. 



Japanese plums, S. A. Beach (Gard. and Forest, 10 (1897), No. 509, pp. 464, 465). 



Pruning and training of grapes, E. G. Lodeman ( U. S. Dept. Agr. Yearbook 1896, 

 pp. 499-542, figs. 24). — All the more common methods of grape pruning and training 

 are described and many of them illustrated. The principles involved are discussed. 



Subirrigation for large foliage beds, F. Cranefield ( Wisconsin Sta. Rpt. 1896, 

 pp. 256-259, figs. 2). — A successful method of subirrigating large foliage beds where 

 it is difficult to water the plants thoroughly with hose or sprinklers is described 

 and illustrated. The soil was removed to a depth of 6 in. and 3 in. drain tile was 

 laid. A line of tile extended across the bed with branch lines on each side of it 

 about a foot apart. 



Application of chemical fertilizers to plants in pots, H. Dauthenay (Rev. Horl., 

 69 (1897), Nos. 22, pp. 514-518, figs 3; 23, pp. 541-544, fig. 1).—A discussion of the work 

 of G. Truffaut and A. Hubert, 



Achillea (Garden, 52, No. 1358, pp. 421, 422, figs. 6).— Descriptive notes on 24species 

 of these ornamental plants. 



The pink color in chrysanthemums, W. Miller (Gard. and Forest, 10 (1897), 

 No. 511, pp. 486, 487). — The author notes the possible means of controlling color vari- 

 ations in pink chrysanthemums. In an experiment made during the past season a 

 large supply of nitrogen in the plant food did not deepen the pink color as is often 

 claimed. Shading the plants weakens the color very noticeably. 



