HORTICULTURE. 757 



discussed, and an attempt is made to estimate the average yield and profits per acre 

 under favorable conditions of culture. 



Notes are given upon the history and future of each type of importance, including 

 as complete a list as possible of varieties, with recommended sorts. The insects 

 and diseases affecting brambles and groselles respectively are enumerated, and those 

 of economic importance are briefly discussed. A systematic study of Ribes and 

 Rubns is made, in which all species, native or cultivated, in America, north of Mexico, 

 are classified and described. The editor has added an appendix of American books 

 treating in part of bush fruits. The usefulness of the book to both grower and 

 student is much enhanced by the treatment of practical and technical subjects in 

 separate chapters. 



Measures for the promotion of horticulture and forestry in Sweden, Den- 

 mark, Germany, and Austria, J. Smith (Tidsskr. Norske Landbr., 5 {1898), No. 5, 

 pp. 215-235). 



The principles of fruit-tree culture, E. Lucas and F. Medicus (Stuttgart: I. B. 

 Metzler, 1898, pp. 482 + XVI, ill.).— A text-book. 



Observations of the relative moisture content of fruit trees in winter and in 

 summer, C. S. Crandall (Proc. Amer. Assoc. Adv. Sci., 47 (1898), pp. 405-407). — A 

 report is given upon a series of investigations which the author conducted with 

 samples of trunks and branches of apple trees taken January 15 and 16 and August 3. 

 The specimens were thoroughly air dried, carefully weighed before and after the 

 drying, and the percentage of loss in each case is given in a table. From the trial 

 made it seems reasonable to conclude that there was hardly any appreciable differ- 

 ence between the winter and summer moisture contained in apple trees, at least 

 when grown under Colorado conditions. 



Some conditions which influence the setting of fruit, S. A. Beach (East. Neio 

 York Hort., 2 (1898), No. 2, pp. 6, 7).— This is a paper read before the Eastern New 

 York Horticultural Society. The author enumerates the following factors which 

 influence in a most marked degree the development of fruit buds and thereby the 

 production of fruit, and which are largely under the control of the fruit grower: 

 "The kind and quantity of fertilizers which are applied to the soil, the supply of 

 moisture in the soil, the condition of the foliage, and the directing of the supply of 

 plant food to different parts of the plant by judicious pruning. Those things which 

 are beyond the fruit grower's control, and which combine to vary the results, are 

 temperature, light, and atmospheric moisture." 



Manurial requirements of orchard and fruit trees, J. J. Willis (Gard. Citron., 

 3. ser., 25 (1899), No. 630, p. 36). — A discussion of principles. 



History of the Gano apple, H. E. Van Deman (Amer. Gard., 20 (1899), No. 215, 

 p. 81). 



A preliminary study of the prickly pears naturalized in New South Wales, 

 J. H. Maiden (Dept. Agr. Neiv South Wales, Misc. Pub. 253, pp. 30, pis. 6).— Extracts 

 from the law providing for the eradication of the prickly pear, with notes upon its 

 administration. Notes on the prickly pear in other countries aud a brief biblio- 

 graphy of the prickly pear as a fodder plant are given. The species naturalized in 

 New South Wales are described and the synonymy discussed. 



A new fruit (Tidsskr. Norske Landbr., 5 (1898), No. 11, p. 566).— A French botan- 

 ist, Andree, has found a new fruit tree in his travels in the Argentine Republic (La 

 Plata). The tree, Feijoa Sellowaua, is 3 to 5 meters high. The fruit is an elongated 

 egg-shaped berry, 4 to (5 cm. long and 3 to 5 cm. broad; it retains its green color 

 when ripe. The meat of the fruit is firm, white, very juicy, and sweet, and tastes 

 much like pineapple. The tree is now planted in the south of France, where it 

 thrives excellently. If it will grow in other parts of Europe, Andre"e is of the 

 opinion that it will prove a valuable southern fruit for Europe. 



Small fruits, E. S. Gokp ( Wisconsin Sta. Bpt. 1897, pp. 313-316).— Notes and variety 

 tests on European cherries, strawberries, gooseberries, golden mayberry, strawberry- 

 raspberry, and currants. 



