152 EXPERIMENT STATION EECOKD. 



The experience of F. B. Guinn, of Rusk, Tex., in top-working hickories with 

 pecans is noted and appears to confirm the above reported observations relative 

 to the tendency of liickory stock to dwarf pecan nuts. 



Information is also given relative to soils adaptetl to pecan culture, soil prepa- 

 ration, fertilizers, planting, care and cultivation of the trees, and propagation 

 by means of grafting and budding. 



FORESTRY. 



Forestry in the United States at the present day, J. AV. Toumey (Inlcrnnt. 

 Inst. Ayr. [Rome], Mo. Bui. Agr. Intel, and Plant Diseases, 6 (1915), No. 6, pp. 

 779-785). — A popular account relative to progress made in national, state, and 

 private forestry in this country. 



Acts of assembly relating- to forests and forestry, edited by J. Kalbfus 

 (In DUjcut of Game, Fish, and Forestry Laws, 1915. Ilarrishurg, Pa.: State, 

 1915, pp. 257-3If2). — This comprises a digest of all the acts passed by the Penn- 

 sylvania Assembly throu.u'h tlis' year 101") rt'latin;: to forests and forestry. 



Planting forest trees on idle lands in New York (xV. Y. State Col. Forestry, 

 Syraeusc Univ., Ser. XIII, No. 2C (1913), pp. 15, figs. 6).— This bulletin dis- 

 cusses the utilization of idle nonagricultural lands in New York, with special 

 reference to the improvement and the extension of woodlands. 



The northern hardwood forest: Its composition, growth, and management, 

 E. H. Fkothingham (V. S. Dcpt. Agr. Bui. 2S5 (1915), pp. 79, pis. i5).— This 

 l)ullotin outlines the extent, general characteristics, and economic importance 

 of the northern hardwood forests, briefly describes the silivicultural features of 

 the principal specie.s, and points out the methods of managing hardwood stands 

 which appear to be best calculated to furnish a continuous supply of the differ- 

 ent ^^■oods. 



A series of volume tables for northern hardwoods for use in estimating the 

 quantity of standing timber is appended. 



The trees and shrubs of the Pacific coast, F, R. S. Bai.four (Jour. Roy. 

 Hort. Soe., J,l (1915), No. 1, pp. 21-27, pis. 12).— A descriptive sketch of the 

 flora occurring in four regions along the I'acific coast, and believed to be repre- 

 sentative of differences brought about by rainfall, latitude, and altitude on the 

 Pacific slope from British <V)liiiiihia to Southern California. 



Trees of the Cambridge Botanic Garden, R. I. Lynch (Jour. Roy. Hort. Spc, 

 Jfl (1915), No. 1, pp. 1-20, pis. 12). — Descriptive notes are given of some fifty of 

 the most important trees in the Cambridge Botanic Garden. 



The rubber plants of southern Italian Somaliland, G. Scassellati-Sfob- 

 zoi-iNi (Agr. Colon. [Italy], 9 (1915), No. 9, pp. 521-545, pis. 3, fig. i).— In the 

 first part of this paper the author gives an account of different native rubber 

 plants in Italian Somaliland, together with analyses of the latexes and mis- 

 fellanoous information relative to these plants. The second part of the paix^r 

 gives an account of the experimental culture of Ceara rublier in tliis colony. 



Timber physics. — Treatise on timber tests and summary of results, W. II. 

 Warken (Dept. Forestry, N. S. ^yales, Bui. 10 (1915), pp. 28, pis. 2. figs. 10).— 

 This treatise is based on results of mechanical tests of New South Wales 

 timbers which have been previously published in full (E. S. R.. 27, p. 43). The 

 object of the present treatise is to show the application of the results obtained 

 in the test with special reference to their use by the engineer, architect, builder, 

 and student. 



Problems in kiln drying lumber. II. D. Tiemann (Lumber World Rev., 29 

 (1915), No. 6, pp. 21-23, figs. S).— In this paper the author describes a number of 

 practical problems and difliculties which are eucouutereil in the kiln drying of 



