342 EXPERIMENT STATION KECOED. 



A monoecious date, D. Bois (Rev. Hort. [Paris], 82 (1910), No. 21, pp. Jf92- 

 494, fig- !)• — The author here describes and illustrates the infloresence of a 

 date palm received from C. Henry, gardeuer-in-chief of the Khedive, Cairo, 

 Egypt, which is monoecious in character, whereas the date palm has generally 

 been considered as dioecious. Some of the iutloresceuces on this tree consist 

 entirely of either male or female flowers and others are mixed, the female 

 flowers being situated at the base of the spadiees and the male flowers at the 

 summit. The extremities dry up after fecundation and the fall of the staminate 

 flowers. 



The relation of asexual or bud mutation to the decadence of California 

 citrus orchards, J. E. Coit {Proc. [Cal.] Fruit Growers' Conv., SI {1910), pp. 

 32-39). — A paper on this subject, with the discussion following, in which the 

 author presents the idea that a part of the decadence in the citrus orchards is 

 due to divergence of fortuitous bud-mutations. It is further suggested that 

 these mutations may be retrogressive and if not checked by intelligent pruning 

 and bud selection may cause the fruits to become a mixture of bad types. The 

 importance of rebudding trees with desirable sports arising from progressive 

 mutations is pointed out. 



The citrus grove, its location and cultivation, P. H. Rolfs (Fla. Quart, 

 Bui. Dept. Agr., 20 {1910), No. 2, pp. 81-96).— A popular account of citrus cul- 

 ture with special reference to Florida conditions. 



Orchard heating, R. F. Howard {Bui. Nebr. State Hort. Soc. No. 32, 1910, 

 pp. 10, figs. 2). — This paper discusses frost protection from the standpoint of 

 Nebraslva conditions. A test was made of the sliding lid type of oil heaters in 

 the Nebraska Experiment Station orchard in the spring of 1910. Two acres 

 were heated, 60 heaters per acre being employed, and the temperature was 

 kept up from 3° to 4° higher than that outside against a prevailing 20-mile 

 wind. 



Erost prevention work in the Rogue River Valley, Oreg., during the 

 spring of 1910, P. J. O'Gara {Mo. Weather Rev., 3S {1910), No. 9, pp. I't37- 

 I44O). — This article shows that the results obtained with flres and smudges to 

 prevent fi-ost injury to orchards in 1910 confirm those obtained in 1909 (E. 

 S. R., 23, p. 441). In view of the uniform success both in forecasting and in 

 preventing injury the author is of the opinion that the problem of protection 

 of orchards from frost injury in Rogue River Valley has been settled. 



Kinds of fruit to plant in different districts, W. S. Thornber (Better Fruit, 

 5 (1910), No. 6, p. Jf2). — Lists are given of varieties of orchard and small fruits 

 and nuts recommended for planting in the coastal slope region, inland valleys, 

 and upland valleys in Washington State. 



FORESTRY. 



The forest resources of the world, R. Zon (U. S. Dept. Agr., Forest Serv. 

 Bui. 83, pp. 91). — This bullethi presents a statistical study of the forest re- 

 sources of the principal timber-producing countries of the world with special 

 reference to the influence of foreign resources upon the forest resources and 

 future supply in the United States. The topics discussed for each country are 

 as follows: Forest area, distribution of the forests throughout the country, 

 composition and character of the forests, annual consumption, cutting, growth 

 per acre, and wood prices. Except for slight modifications the subject matter 

 is similar to that presented in the author's report to the National Conservation 

 Commission on Foreign Sources of Timber Supply (E. S. R., 23, p. 43). 



Second annual report of state forester on the progress of forestry in Ver- 

 mont, A. F. Hawes (Ann. Rpt. State Forester Vt., 2 (1910), pp. 52, pis. 5, 



