438 EXPERIMENT STATION RECORD. [Vol.43 



The problems of Italian arboriculture, G. Bkiganti (/ ProbJcmi DelV 

 ArboriculUira Italiana. Bologna: Nicola ZanichcUi, 1919, pp. 101). — Brief 

 critical surveys of the fruit and r.ut industries of Italy, with suggestions for 

 their betterment and extension. A bibliography of related literature is in- 

 cluded. 



The resistance of vines to winter, P. Diffloth {Vie Agr. et Rurale, 16 

 {1920), No. 21, pp. 356-359, figs. 3). — A partial review of our knowledge relative 



10 factors influencing the resistance of fruit trees and vines to cold. 



List of fruits recommended by the District Horticultural Societies for 

 the territory embraced in their districts {Trojis. III. Uort. Soc, n. ser., 53 

 {1910), pp. 25-28). — Variety lists are given of orchard and small fruits recom- 

 mended for planting in northern, central, and southern Illinois. 



The control of diseases and insect pests of fruit trees {Dir. Jen. Serv. 

 Agr. [Chile], Bol. Jfl {1919), pp. 8, figs. //). — Directions are given for the control 

 of some of the more important diseases and insects attacking fruit trees in 

 Cuba. 



Orchard management, W. S. Blair {Ann. Rpt. Fruit Growers' Assoc. Nova 

 Scotia, 56 {1920), pp. 43-50). — A contribution from the Nova Scotia Experi- 

 mental Station, at Kentville, in which the author outlines the management of a 

 closely planted commercial apple orchard set out in 1912, and gives the yield 

 in 1919 of different varieties in the orchard. The trees were set out at a dis- 

 tance of 20 by 20 ft. An orchard fertilizer test conducted on pure sandy land at 

 Berwick, N. S., is also briefly noted. 



The commercial varieties of apples of Canada and the United States, 

 W. T. Macoun {Ann. Rpt. Fruit Growers' Assoc. Ontario, 51 {1919), pp. 11- 

 22). — A contribution from the Canadian Department of Agriculture discussing 

 varieties of apples adapted for culture in different sections of the United States 

 and Canada, and giving a list of summer, autumn, and winter varieties recom- 

 mended for different districts of Ontario. 



The histories of some of our well-known pears, C. H. Hooper {Fruit, 

 Floicer, and Veg. Trades' Jour. [London], 37 {1920), No. 25, pp. 615, 611).— 

 Brief notes on the origin of a number of well-known pears, compiled from 

 various sources. 



Some principles of peach growing, H. P. Gould {Trans. III. Hort. Soc, 

 n. ser., 53 {1919), pp. 96-115). — A paper with discussion following, in which 

 the author presents some of the fundamental principles of peach growing as 

 distinct from rule-of -thumb practices and methods. 



Good new not well-known varieties of small fruits, M. B. Davis {Ann. 

 Rpt. Fruit Growers' Assoc. Ontario, 51 {1919), pp. 53-56). — A contribution 

 from the Central Experimental Farm, Ottawa, comprising brief descriptions of a 

 few varieties of strawberries, raspberries, grapes, and currants that have 

 shown a good record of performance at the farm. 



Black currant varieties: A method of classification, R. G. Hatton {-lour. 

 Pomol., 1 {1920), Nos. 2, pp. 65-80, pis. 8, figs. 2; 3, pp. 145-154, pis. 8, figs. 2).— 

 A contribution from the Fruit Experiment Station at East Mailing, England, 

 comprising a classification of the black currant varieties. The classification is 

 based on a study of some 60 different collections of black currants from nearly 

 as many sources, and was made preliminary to a study of the economic value 

 of the different varieties. 



A mutating blackberry-dewberry hybrid, L. R. Detjen {Jour. Heredity, 



11 {1920), No. 2, pp. 92-94, figs. 4).— The author discovered in the summer of 

 1915 a cut-leaved plant arising as a bud mutation from what appears to be a 

 wild, natural, blackberry-dewberry hybrid. The plant as discovered is here 



