14G EXPERIMENT STATION RECORD. [Vol.38 



seed remaining after the fire, all point to the seed stored In tlie duff as the 

 principal source of seed responsible for the n stocking. 



"The ability of the seed to retain its viability when stored in the duff or 

 when retained in cones during flres has been further demonstrated by recover- 

 ing and germinating seed from duff under forest conditions and by recovering 

 and germinating seed from cones which pass through a crown fire." 



The red spmce: Its growth and management, L. S. Murphy ([/. S. Dept. 

 Agr. Bui. oU {1911), pi). 100, pis. 7, fiys. 5).— The chief purpose of this bulletin 

 Is to formulate definite systems of forest management for various conditions. 

 The subject matter as a whole is based upon the author's field investigations of 

 second growtli spruce and upon the literature dealing with virgin stands, in- 

 cluding unpublished data collected by various members of the Forest Service. 

 The phases discussed include uses of spruce, amount and value of spruce cut 

 and imported, present stand of spruce, value of spruce and spruce stumpage, 

 range and distribution, forest types, second growth stands of spruce, soil and 

 moisture requirements, light requirements, wind firmness, reproduction, form, 

 length of life and maximum size, susceptibility to injury, growth, stands and 

 yields, methods of cutting, brush disposal, sowing and planting, and rotation. 

 Appended to the bulletin are volume tables, taper measurements, stand tables, 

 and sample plat data for spruce. 



Preliminary study of white spruce in Minnesota, W. H. Kenety (Minnesota 

 Sta. Bui. 168 {1911), pp. 5-30, figs. 12). — This bulletin presents data on the 

 soil requirements, growth, yield, and distribution of white spruce in Minnesota, 

 together with the approximate returns which may be expected from young 

 stands or plantations and suggestions relative to possibilities of private invest- 

 ments and a rational system of taxing forest lands. The salient features of 

 the Massachusetts forest taxation law are given. 



Note on red sanders (Pterocarpus santalinus), T. A, Whitehead {ihidian] 

 Forest Bui. SJf {1911), pp. 10, pis. 4). — A descriptive account of the red sanders 

 tree {P. santalinus) with reference to its botany, habitat, distribution, and 

 uses. The paper is accompanied by an actual wood specimen of the tree. 



Preliminary review of the properties of rubber of different grades, O. de 

 Vries and H. J. Hellendookn {Arch. Rubbercult. Nederland. Indie, 1 {1911), No. 

 4, pp. 218-233, figs. 5). — Data are given showing the viscosity, tensile strength, 

 rate of cure, and slope of a number of rubber samples tested at the Central 

 Rubber Station. 



On the relation between specific gravity and rubber content of latex, 

 also with regard to the use of hydrometers, O. de Vkies {Arch. Rubbercult. 

 Nederland. Indie, 1 {1911), No. 4, PP- 242-219, figs. 3).— A discussion of these 

 subjects based upon investigations conducted by several experiment stations 

 in the Netherlands Indies. 



Some remarks on the properties of rubber from one group of trees, and 

 on the influence of the tapping system, O. de Vkies {Arch. Rubbercult. Neder- 

 land. Indie, 1 {1911), No. 4. pp. 280-288). — The discussion of this paper is based 

 upon the above-noted investigation. 



Wood utilizzation directory of New York, J. Harris, N, C. Brown, and 

 H. H. Tryon {Syracuse Univ. [Pubs.}, 11 {1911), No. 5, pp. 204, pl- 1, figs. 11).— 

 This bulletin, which was prepared by the New York State College of Forestry 

 in cooperation with the Forest Service of the U, S. Department of Agriculture, 

 contains a summary of woods used and total amount of lumber consumed in 

 each industry, tables showing the use of woods In each industry and how each 

 species is used, and a directory of the wood-using industries in the State, 



Forest products of Canada, 1916. — Lumber, lath, and shingles {Dept. Int. 

 Canada, Forestry Branch Bui. 62A (1911), pp. 28, figs. 3).— Statistics are given 



