42 EXPERIMENT STATION RECORD. 



based largely on the author's field investigations, discuss distribution and asso- 

 ciation, habitat, characteristics, silvicultural requirements, and rate of growth 

 of jack pine. Tabular data showing composition of type stands, taper of logs 

 on different grades of soil, height, diameter, and volume measurements, includ- 

 ing rate of growth and yield of ties under average soil conditions, are also 

 given. 



The rubber plants of western and southern Madagascar, H. Jumellk and 

 H. Pebkieb (Agr. Prat. Pays Chauds, 11 {1911), No. 96, pp. 177-193).— An ac- 

 count of the rubber plants in western and southern Madagascar with special 

 reference to their geographic distribution and exploitation. Most of the plants 

 noted have been previously described (E. S. R., 24, p. 245). 



The rubber country of the Amazon, H. C Peabson (New York, 1911, pp. 

 X+22S, pi. 1, figs. 175, maps 5). — A detailed description of the great rubber 

 industry of the Amazon Valley, which comprises the Brazilian States of Para, 

 Amazouas, and Matto Grosso, the Territory of the Acre, the Montana of Peru 

 and Bolivia, and the southern portions of Colombia and Venezuela. 



Fixation of the dunes on the coast of Jutland, W. J. Mobeill {Forestry 

 Quart., 9 {1911), No. 1, pp. 62-67). — A description of the methods employed in 

 Denmark to stop the shifting of sands, the subject matter being adapted from 

 an article by J. Givskov. 



Grain and texture in wood, S. J. Recoed {Forestry Quart., 9 {1911), No. 1, 

 pp. 22-25). — ^A discussion of the terms "grain" and "texture" in relation to 

 their use in forestry. 



Strength of ties treated with crude oil {Engin. Rec, 63 {1911), No. 12, p. 

 335). — Results are given and discussed of a test conducted by W. K. Hatt of 

 Purdue University to determine the effect of crude-oil treatment on the strength 

 of loblolly pine, shortleaf pine, and red gum, ties. The spike-holding power of 

 the ties appears to be materially decreased by the crude oil tx-eatment. 



The lumber production of the United States, R. S. Kellogg {Rpt. Nat. 

 Lumber Manfr. Assoc, 8 {1910), pp. 95-108, dgms. 2). — ^A statistical review 

 based largely on reports of the United States Bureau of the Census and the 

 Forest Service of this Department. 



The problem of private forestry, H. S. Geaves (Rpt. Nat. Lumber Manfr. 

 Assoc., 8 {1910), pp. 81-93). — A discussion of this subject with special reference 

 to the development of forest management on lands owned by lumbermen. 



Forest protection, C. A. Schenck {Asheville, N. C, 1909, pp. 159). — ^This 

 is a guide to lectures on forest protection delivered at the Biltmore Forest 

 School. The material is presented under the general headings of protection 

 against organic and inorganic nature. Under the former heading are discussed 

 protection against man, animals, and plants, and under the latter heading con- 

 sideration is given to adverse climatic influences, storms, erosion, sand drifts, 

 and noxious gases. 



Purchase of land under the Weeks law in the southern Appalachian and 

 White Mountains {U. S. Dcpt. Agr., Forest Serv. [Pamphlet], 1911, pp. 9).— 

 The purposes and text are given of the recent federal law authorizing the pur- 

 chase of lands for preserving the watersheds and conserving the navigability of 

 streams (E. S. R., 23, p. 498). The classes of land desired and the procedure 

 in making selections and purchase, as well as the areas within which proposals 

 for sale are at present invited, are indicated. 



Some facts on forestry conditions in Sweden, C. Metzgeb, trans, by M. H. 

 FoEESTEE {Forestry Quart., 9 {1911), No. 1, pp. Jt5-58). — A translation of the 

 author's article, previously noted (E. S. R., 23, p. 147). 



The Swedish forest conservation law, B. E. Febnow {Forestry Quart., 9 

 {1911), No. 1, pp. 59-61). — ^A brief review of the work of the county conserva- 



