644 EXPERIMENT STATION RECORD. 



The bamboo (Dendrocalamus strictus) forests of the Ganges Division, TJ. P., 

 B. A. Rebsch (Indian Forester, 36 (J 910). No. J,, pp. 202-221, pi. i).— The chief 

 object of the present article is to draw attention and invite discussion on the 

 management and workhig of bamboo forests In a locality where the demand is 

 great and the working consequently intense. The past history of these forests 

 is reviewed, and the gradual evolution of the present method of working and 

 changes in system of management are discussed. 



The forests and forest flora of the Colony of the Cape of Good Hope, T. R. 

 Sim (Aherdeen, 1907, pp. 361, pis. 160, map 1). — The purpose of the present 

 work is to bring together the available information relative to the forest flora 

 of Cape Colony. 



Part 1 treats of the forests themselves relative to their area, value, and 

 economic composition, factors affecting forest growth and distribution of 

 siiecies, economic value of Cape timbers, protection and exploitation, artificial 

 afforesting, history of Cape forestry, and species reserved under the forest act. 

 Part 2 contains a synoptical index to indigenous ligneous genera, an artificial 

 key to the genera, and systematic descrii)tions of species. Part 3 is made up 

 of botanical drawings of the species. 



On the useful timber trees of German southwest Africa, C. Pouge (Ztschr. 

 Forst II. Jagdir., Ji2 {1910), No. 7, pp. Ii00-Jj26, t)ls. 5). — Descriptions are given 

 of a large number of timber trees growing in the central and southern portions 

 of southwest Africa. The subject matter is based upon the available literature, 

 together with the author's personal observations. 



A new resin cup, T. S. Woolsey, Jr. (Indian Forester, 36 (1910), No. 8, pp. 

 Jf50-Jt52, pi. 1). — ^A new resin cup is briefly described and pictured. 



The cup, which appears to be of some considerable size, is made of glass and 

 tightly covered with a metal cap which is also fastened snugly over the holes 

 in the tree. Two holes from f to 1 in. in diameter are bored into the sap wood 

 of the tree at a tangent with the heart wood. The holes start from the same 

 point and extend in deiith about 5 in. according to the diameter of the tree. 



The grade of gum produced is superior to that secured in unprotected cups, 

 since there is no evaporation and no dirt of any kind can get into the sap. 



The anatomy of compressed woods, P. Jaccard (Separate from Mitt. 

 Schxoeiz. Centralanst. Fofstl. Versuchsw., 10 (1910), No. 1, pp. 53-lOt, pis. 6, 

 figs. 33). — This study, which was conducted in the laboratory of the Swiss 

 polytechnic school, consists chiefly of an investigation into the anatomical 

 causes of rupture in wood. 



Samples of wood of a number of coniferous and hardwood species were sub- 

 mitted to mechanical compression and studied relative to the direction of the 

 lines of rupture caused by the compression, the relation between the distribu- 

 tion of the medullary rays and the direction of the lines of rupture, and the 

 anatomical character of the zone of ruptui-e. • For the sake of comparing 

 mechanical compression with natural pressure, the structures of naturally 

 plicated spruce wood, axillary wood, and of callous formed wood were also 

 studied. 



The experiments are described in detail, and the studies illustrated by 

 numerous plates. 



Abstract of report on the present status of timber tests in the Forest 

 Service, United States Department of Ag'riculture, W. K. Hatt (Cong. 

 Internat. Assoc. Testing Materials [Proc], 5 (1909), Pt. I, Sect. XVII, pp. 10).-— 

 This paper as pi-eseuted before the Fifth Congress of the International Asso- 

 ciation for Testing Materials, Copenlingen. 1000, consists of the conclusions 

 derived from the various studies conducted by the Forest Service of this De- 



