19181 FORESTBY. 44Y 



" Bog " gardening- with native plants, N. Taylor (Oard. Mag. [N. Y.], 26 

 (1917), No. 3, pp. 89-91, figs. 9). — A discussion of ornamental plants adapted to 

 sour, undralned soils, including directions for making an artificial bog. 



FORESTRY. 



Tlie administration of the State forests in Hokushu, O. Shishido {Jour. 

 Col. Agr. Tolioku Imp. Univ., 7 (1917), No. 7, pp. ^15-U9).—K historical sketch 

 of forest activities on the island of Hokushu, Japan, including an account of 

 the administration of the State forests. 



Effects of grazing upon western yellow-pine reproduction in the National 

 Forests of Arizona and New Mexico, R. R. Hill {V. S. Dept. Agr. Bui. 580 

 (1917), pp. 27, pis. S, figs. 2). — This bulletin presents the results of a study to 

 determine the character and extent of the damage to young growth of western 

 yellow pine in the Southwest from the grazing of live stock, and to find out the 

 best means of keeping such damage at a minimum while permitting the proper 

 utilization of the range. Recommendations are given relative to the applica- 

 tion of the results to range management in the Southwest. 



Germination of pine seed, E. Wibeck (Slcogsvdrdsfor. Tidskr., 15 (1917), No. 

 2, pp. IJf 1-174, fig^- 4)- — The results are given of germination tests of pine seed 

 secured from different localities in Sweden. Belated germination was found to 

 increase with the inclemency of the climate in the locality from which the 

 seed originated. 



The pine tree of north Sweden, N. Sylvan (Skogsvardsfor. Tidskr., H (1916), 

 No. 12, pp. 783-884, pl- 1, flffs. 53). — A discussion of two kinds of Swedish pine, 

 Pinus lapponica and P. sylvestris, with special reference to influence of 

 locality on tree and seed characteristics. 



[Rubber cultivation and rubber preparation] (Proc. Agr. Conf. Malaya, 1 

 (1917), pp. S-S5, 37-63, 96-114) .—Under these general headings the following 

 papers, with discussions, contributed to the First Agricultural Conference of 

 Malaya, held at Kuala Lumpur, April 2.5-2S, 1917, are here reported : Cultiva- 

 tion and Manuring, by A. P. N. Vesterdal (pp. 3-10) ; Cultivation, Drainage, 

 and Manuring, by F. G. Spring (pp. 11-19) ; Thinning Out, by T. J. Cumming 

 (pp. 20-22) ; Thinning Out, by E. W. King (pp. 23-28) ; Rubber Seed Selec- 

 tion, by A. H. Malet (pp. 29-32) ; Rubber Seed Selection, by J. McNicol (pp. 

 33-35) ; Clean Clearing, Pests, and Diseases, by W. R. Shel ton- Agar (pp. 

 37-43) ; Diseases of the Leaves and Stem of Hevea brasiliensis in the Malay 

 Peninsula, by R. M. Richards (pp. 44-54) ; Root Diseases of Hevea and Clean 

 Clearing, by W. N. C. Bel grave (pp. 55-63) ; Rubber Manufacture and Factory 

 Methods, by F. G. Souter (pp. 9G-105) ; and The Preparation of Plantation 

 Para Rubber, with Special Reference to Future Considerations, by B. J. Eaton 

 (pp. 106-114). 



On a new essence from Blepharocalyx gigantea, F. Zelada ( Univ. Tucumdn, 

 Inform. Dept. Invest. Indus., 1917, pp. 5-13, figs. 3). — A histological and chemi- 

 cal study of the wood and leaves of this Argentine tree, which yields a tur- 

 pentine-like essence. 



Pulpwood consumption and wood pulp production, 1916, F. H. Smith and 

 R. K. Helphenstine, jr. (U. S. Dept. Agr., Forest Serv. [Pub.], [1917], pp. SO, 

 figs. 5). — This comprises the results of a statistical survey of the pulpwood and 

 wood pulp industries in 1916, conducted by the Forest Service in cooperation 

 with the News-Print Manufacturers Association. 



The total quantity of pulpwood used by 230 establishments reporting was 

 5,228,558 cords, an increase of 17 per cent over 1914, the last year for which 

 similar statistics were compiled. The quantity of wood pulp produced in 1916 

 amounted to 3,271,310 tons, an increase of 13 per cent over 1914. 



