g46 EXPERIMENT STATION EECORD. 



will give the best results. Profitable tapping operations were conducted with 

 6-year-old trees. The quantity of latex appears to increase with the age and 

 diameter of the tree, although in some cases slender trees produced relatively 

 high yields. The author points out that trees showing high yields do not 

 necessarily sustain these high yields from year to year, hence in selecting seeds 

 it is advisable to select from trees which show a contmuous high yield. No con- 

 clusions are thus far drawn as to the damage to the trees from repeated 



tappings. 



Para rubber (Hevea brasiliensis) in Southern Nigeria (Bui. Imp. Inst. 

 [So. Eensington], 8 (1910), No. J,, pp. 341-346).— Analyses are reported on sam- 

 ples of rubber secured in 2 series of tapping experiments conducted on young 

 Para trees in 1909. The rubber was quite equal in quality to the plantation 

 Para from Ceylon and Malaya. The yields thus far obtained are promising. 



The rubber of Mascarenhasia elastica (Bui. Imp. Inst. [So. Kensington], 

 8 (1910), No. Ji, pp. 3Ji6-352). — The analyses are given of a number of speci- 

 mens of 21. elastica rubber from the East African Protectorate, Pemba, and 

 Portuguese East Africa. The product is of good quality, although no definite 

 information is at hand relative to the commercial possibilities of this species. 



Third biennial report of the state forester of the State of California, 

 G. M. HoMANs (Bien. Rpt. State Forester CaL, 3 (1909-10), pp. 160, figs. 21).— 

 Chapter 1 of this report contains a general description of forest conditions in 

 California, including notes on species. The succeeding chapters discuss various 

 forest problems, including forest protection in southern California, northern 

 California, and the redwood belt, the proposed state system of fire protection, 

 recommendations regarding tree squirrels, forest management, forest extension 

 with notes on trees recommended for various purposes, the forest laws, and 

 expenditures, with a summary of recommendations. 



Beport of the state forester of Wisconsin for 1909-10, E. M. Griffith 

 (Rpt. State Forester Wis., 1909-10, pp. 136). — This report deals largely with the 

 present forest conditions and recommendations for their improvement along 

 the lines of forest legislation, administration, extension, protection, educa- 

 tion, etc. 



Annual report of the director of forestry of the Philippine Islands for 

 the period July 1, 1909, to June 30, 1910, G. P. Ahern (Ann. Rpt. Dir. 

 Forestry P. I., 1910, pp. 25). — This consists of a progress report of forest opera- 

 tions conducted during the year by the divisions of administration and investi- 

 gation, including statistics relative to the certification of public lands, utiliza- 

 tion of forest products, amounts of important timber species cut, imports and 

 exports of forest products, revenues, and expenditures. 



Oflacial proceedings of the division of forestry of the Eoyal Prussian 

 Ministry for Agriculture, Domains, and Forests, 1909 (Amtl. Mitt. Abt. 

 Forsten E. Preuss. Min. Landw. [etc.], 1909, pp. IV+47). — A statistical review 

 for the year, with comparative data for a few previous years, showing the im- 

 ports and exports of forest products, average prices of timber by volume and 

 species, hunting permits, forest accidents and offenses, the details relative to 

 the administration of domains, forest areas, yields of major and minor forest 

 products, revenues, and expenditures, as well as considerable miscellaneous 

 information. 



Forestry, P. P. Wells (N. Y. State Ed. Dept. Bui. 479, 1910, pp. 147-158).- 

 A brief review of various phases of forest legislation enacted in different por- 

 tions of the United States during 1907-8. 



Publications of the Forest Service (U. S. Dept. Agr., Dlv. Pubs. Circ. 11, 

 pp. 6). — A list of Forest Service publications available JMarch 3, 1911, for free 

 distribution. 



