144 EXPEBIMENT STATION RECORD. 



FORESTRY. 



The timbers of British Guiana {West India Com. Circ, 29 (IQlJf), Nos. 4OO, 

 pp. SJ,, 35; 401, pp. 54, 55; 402, pp. 81-83, fig. 1; 403, pp. 103, 10.',; 404, pp. 

 12rt, 128; J,05, pp. 152, 153; 4O6, pp. 173-175).— An account of the forests and 

 timber industry in British Guiana, including a descriptive list of the principal 

 woods. 



List of the trees, shrubs, and economic herbs of the Southern Forest 

 Circle of the Central Provinces, H. H. Haines {Indian Forester, 38 (1912), 

 No. 10, pp. 495-509; 39 {1913), No. 2, pp. 49-69+3; 40 {1914), Nos. 5, pp. 194- 

 229+3; 6, pp. 264-283; 7, pp. 330-355; 8, pp. 392-403; 9, pp. 429-440; 10, pp. 

 472-502). — A descriptive list of the economic plants of the Southern Circle of 

 the Central Provinces, containing information as far as could be obtained rela- 

 tive to the nomenclature, botanical characteristics, distribution, and uses of 

 each species. 



Ecology of sal (Shorea robusta). — I, Soil composition, soil moisture, soil 

 aeration, R. S. Hole and P. Singh {Indian Forest Rcc, 5 {1914), No. 4, pp. 

 11+42, pis. 2). — This paper describes the preliminary experiments which have 

 been carried out in the Dehra Dun experimental garden to determine the effect 

 of soil composition, soil moisture, and soil aeration on the development of sal 

 seedlings. The work is being conducted with special reference to the deter- 

 mination of those factors which influence the healthy development of sal trees. 



Studies on color variation in black pine seed, Pittaueb (Centbl. Gesam. 

 Forstio., 40 {1914), No. 5-6, pp. 185-202, figs. 4)- — -^ preliminary report on a 

 study of color variation in black pine seed, with special reference to the in- 

 fluence of color on the germinative value of the seed. 



Spectrophotometric investigations in woods, H. Knuchel {Mitt. Schweiz. 

 Centralanst. Forstl. Tersuchsw., 11 {1914), No. 1, pp. 1-94, P^^- 3, figs. 34). — 

 The results are here given of a study of the influence of light on the growth and 

 development of individual trees and of stands composed of various species of 

 trees. The data are presented in tabular form and fully discussed. 



Annual ring formation and light, Oelkees (ZtscJir. Forst u. Jagdw., 46 

 {1914), Nos. 8, pp. 455-472, pis. 2, figs. 4; 9, pp. 519-538, figs. -J).— The author 

 here reports a study of the two factors, light and heat, as influencing wood 

 accretion in forest stands. A bibliography of cited literature is appended. 



Investigations in mixed stands, Schwappach {Ztschr. Forst. u. Jagdw., 46 

 {1914), No. 8, pp. 472-491). — A further report on the growth behavior of mixed 

 forest stands as compared with pure forest stands in East Pi'ussia and Silesia 

 (E. S. R., 21, p. 144). 



Size and disposition of normal growing stock in seedling forests, P. Fluey 

 {Mitt. Schweiz. Centralanst. Forstl. Tersuchsw., 11 {1914), No. 1, pp. 97-148, 

 figs. 20). — The present study of normal growing stock is based on an analysis 

 of yield tables and other yield investigations which have been conducted with 

 different timber species. 



Report of the state forest administration of Bavaria {Mitt. Staatsforstverw. 

 Bayerns, No. 15 {1913), pp. 165). — ^A statistical review of forest operations in 

 Bavaria for the year 1912. 



The data given show the extent of forest areas of all kinds at the beginning 

 of the year, yield in major and minor forest products, revenues, expenditures, 

 planting operations, forest protection, etc. The results of the felling opera- 

 tions, forest plantings, and other improvements in the forests belonging to 

 communes, institutions, corporations, and estates are included. 



Forest products of Canada, 1913. — Pulp wood, R. G. Lewis and W. G. H. 

 BoYCE {Dept. Int. Canada, Forestry Branch Bui. 46 {1914), PP- -^7, pi. 1, figs. 



