540 EXPERIMENT STATION RECORD. 



is given to the geology and original forest conditions of these areas, which the 

 author states were originally covered wilii white, i)itch, and Norway pine. The 

 succeeding forest types on cut-over areas and abandoned cultivated fields are 

 discussed in detail. The conclusion is reached that pitch pine succeeded to 

 the control of ai-eas from which the douiinant white pine had been removed. 

 White pine, liowever, is gradually icgaining its control on cut-over areas, as 

 well as on abandoned fields, by its actual replacement of white birch stands 

 and by its jirobable disitlacement of the i)itch pine stands. 



Reproduction of western yellow pine in the Southwest, G. A. 1'karson 

 ((/. /S'. Dept. Agr., Forest »S'eri'. Circ. Jl.'i, pp. 16). — Although tlie artificial 

 reforestation of denuded areas with western yellow pine is considered imprac- 

 ticable at present, a study made by the Forest Service in 1!)08 indicates that 

 proper methods of management will insure a satisfactory second growth. The 

 factors influencing reproduction, including temperature, soil, and air and soil 

 moisture, together with methods of cutting, brush disposal, grazing, and fire, 

 are discussed and suggestions are given for the proper management of these 

 yellow-pine areas to secure favorable reproduction. The ideal management 

 for the western yellow pine in the Southwest is said to be by means of the 

 shelterwood system, where relatively light preliminary cuttings will stimulate 

 reproduction and can be followed by the removal of the rest of the stand as 

 soon as the second growth has established itself. 



Accretion investigations with oaks, W. Klemme (Allg. Forst u. Jagd Ztg., 

 86 (1910), t)p. 4-9).— An investigation similar to that previously noted for firs 

 (B. S. R., 19, p. 746) is reported relative to the age and growth accretion of over 

 4.000 oaks growing in the state forests of Alsace-Ijorraine. The results are pre- 

 sented in tabular form and discussed. 



British oaks, C. E. Moss (Jour. Hot. [Loudon], ',S (lOlO). .Vo.s-. o65, pp. 1-8, 

 pi. 1, fig. 1; 566, pp. 33-39). — The author presents evidence to show that Quercus 

 robur and Q. .scssiliflora, instead of being identical as they are usually con- 

 sidered, differ in botanical structure, habitat, and range. 



Burmese in wood (Dipterocarpus tuberculatus) R. S. Troup ( [Indian For- 

 est Dept.\ Pamphlet 13, Forest Econ. Her. 6, pp. 2'/, pis. 3, map 1). — An account 

 of this species relative to its nomenclature, distribution, associating species, 

 habits of growth, natural and artificial reproduction, distinguishing character- 

 istics, size and quality of timber, physical properties of the wood, exploitation, 

 yields and returns, and uses of the wood and minor products. 



Wattle growing' for bark, L. E. Taylor (Transvaal Agr. Jour., 8 (1910), 

 No. 30, pp. 235-2Jfl, pis. 5). — The methods for growing wattle are discussed under 

 the general headings formation of plantation, utilization, regeneration, and pro- 

 tection. 



Report on the rubber trees at Nilambur and Calicut, South Malabar, R. L. 

 Proudlock (Madras, 1908, pp. XTI+50, pis. U, chart 1). — This report contains 

 information relative to the history, growth, and condition of a number of rubber 

 trees growing at Nilambur and Calicut, including information relative to the 

 soil and climatic conditions as well as recommendations for the development of 

 the rubber industry in these regions. 



Rubber culture in the Dutch Indies, P. J. Van Houten (Indische Mercuur, 

 33 (1910), Nos. 1, pp. 1, 2; 2, pp. 19-22). — An address in which the history and 

 development of the rubber industry in general is reviewed and an account given 

 of the present status of rubber culture in the Dutch Indies. 



Germination tests of forest seeds, Ingeborg Jacobsen (Ceiitbl. Gesam. 

 Forstir.. 36 (1910), No. 1, pp. 22-28). — The average results secured for the 

 5-year period ended in 1907 at the Danish Seed Control Station, Copenhagen, in 

 tests of a large number of coniferous and deciduous forest seeds are given. The 



