FORESTRY. 239 



Reconnaissance in the Cotteswolds and the Forest of Dean, A. G. Tansley 

 and R. S. Adamson {Jour. Ecology, 1 {1913), No. 2, pp. 81-89).— The results are 

 given of a reconnaissance survey in the above-named forests with special ref- 

 erence to tree association and ground vegetation. 



The forests and forestry of Germany, W. R. Lazenby {Pop. Sci. Mo.. 85 

 {191S), No. 6, pp. 590-598, figs. 5). — A popular descriptive account. 



Botanical and colonial economic studies of the bamboos, C. C. IIoss^us 

 {Bot. GentU., Beihcfte, 81 {1913), 2. AM., No. 1, pp. 1-6.9, figs. i2).— This paper, 

 which consists largely of a compilation of information relative to the economic 

 uses of the bamboo, was prepared with special reference to the extension of 

 bamboo culture in the German colonies. 



The culture of Manihot glaziovii in East Africa, P. Janssens {Bui. Agr. 

 Congo Beige, 4 {1913), No. 3, pp. 670-689, pi. 1, figs. 13).— A report on the 

 development of the plantation rubber industry in East Africa with special ref- 

 erence to Manihot rubber. Information is given relative to general cultural 

 practices, tapping operations, rubber coagulation, and preparation for market. 



On the economic value of sal (Shorea robusta), R. S. Pearson {Indian 

 Forest Mem., Econ. Ser., 2 {1913), No. 2, pp. VI-\-76, pis. 8).— This work deals 

 with the economic uses of the sal tree. The subject matter is discussed under 

 the following general headings : The physical and mechanical properties of sal 

 timber ; the durability of sal timber ; uses of sal timber and minor products 

 obtained from the tree; sal fuel; and outturn and prices of sal timber. 



The wild plants of the South Kamerun forests used by the natives, J. 

 MiLDBBAED {NotizN. K. Bot. Gart. u. Mus. Berlin, 1913, App. 27, pp. .^3).— This 

 comprises a descriptive account of a large number of plants which are utilized 

 by the Bulus in South Kamerun for various purposes. 



The present status of the forest seed origin question, A. Engler {Naturw. 

 Ztschr. Forst u. Landiv., 11 {1913), Nos. 10, pp. Ul-463; 11, pp. 481-491).— A 

 popular review of the author's long-continued investigations, previously noted 

 (E. S. R., 29, p. 841). 



Coast sand dunes, sand spits, and sand wastes, G. O. Case {Surveyor, 44 

 {1913), Nos. 1129, pp. 352-358; 1130, pp. 388-393; 1131, pp. 424-427; 1132, pp. 

 460-463; 1133, pp. 496-499; 1134, pp. 536-538; 1135, pp. 576-580; 1136, pp. 616- 

 620; 1137, pp. 660-662; 1138, pp. 696-699, figs. 4.?).— This comprises a resume of 

 the work accomplished and the methods employed in various countries in the 

 fixation of sand dunes and the reclamation of sand wastes, including many 

 references to the literature on the subject. 



Forest fires in North Carolina during 1912 and national and association 

 cooperative fire control, J. S. Holmes {N. C. Gcol. and Econ. Survey, Econ. 

 Paper 33, 1913, pp. 58, fig. 1). — In this paper the author gives a record of forest 

 fires in North Carolina during 1912 with comparative data for previous years, 

 together with a general account of the progress made in the control of forest 

 fires by the federal and state agencies and by private associations. 



In North Carolina the State has no organized fire protective system. The total 

 loss from forest fires during the past 4 years is estimated at over $2,500,000. 



Practical experiences in the use of fluorids for wood preservation, R. 

 NowoTNY {Ztschr. Atigeic. Chem., 26 {1913), No. 93, Aufsatzteil, pp. 694-700).— 

 The author here presents data showing the results secured in different parts 

 of Austria in the use of various fluorid compounds for preserving telegraph 

 poles, etc. Summarizing the results as a whole the zinc fluorid and sodium 

 fluorid compounds have proved to be strongly antiseptic against wood-destroying 

 fungi and much superior to copper sulphate and zinc chlorid. 



A number of references to the literature on the use of fluorid for preservative 

 purposes are cited. 



29663°— No. 3—14 4 



