1918] FOBESTEY. 847 



Aspen as a temporary forest type, F. S. Bakke (Jniir. Forestry, 16 (]f)18), 

 iVo. S, pp. 294-30'S, figs. S). — In this paper the author sums up the evidence 

 showing the temporary nature of aspen in contrast to the paper by Fetherolf 

 (E. S. R., 37, p. S37), in which aspen is considered as a permanent forest 

 type. 



Accelerated growth of balsam fir in the Adirondacks, E. F. McCaethy 

 {Jour. Forestry. 16 {1918), No. 3, pp. 30J,-307, fig. 1).— The data here presented 

 are based upon measurements made following a pulp logging operation near 

 Brandeth Lake, N. Y. The author concludes that a crop of balsam tir, mer- 

 chantable as pulp logs, can be produced in 60 years from seedlings, and that 

 thinning will not be necessary during this period of production. 



The planting of Scotch pine in Pennsylvania, J. S. Illick (Forest Leaves, 

 16 {1911), No. 6, pp. 87-90, pis. 4)- — A discussion of the peculiarities and de- 

 mands of Scotch pine {Pimis sylvestris), based on observations of plantings 

 made for several years in the State forests of Pennsylvania and on the Eiiro- 

 pean literature of the subject. 



Studies of yield and reproduction of western yellow pine in Arizona and 

 New Mexico, G. A. Peakson {Jour. Forestry, 16 {1918), No. 3, pp. 273-293).— 

 A progress report on yield and reproduction studies which were started in 

 1909 and are to be continued for several years. 



The data given comprise a five-year record of four " extensive " plats ag- 

 gregating 1,138 acres in area. They show the increase in number of trees, 

 condition of stands, number of dead trees and cause of death, increment, and 

 reproduction. Factors influencing these data are also discussed. In view of 

 the short period of observation data secured on " intensive " plats which deal 

 with individual trees are for the most part omitted from this article. 



First season's growth and mortality of white pine and red pine planta- 

 tions, C. H. Guise {Jour. Forestry, 16 {1918), No. 3, pp. 308-318, figs. 2).— The 

 study reported in this paper was conducted largely on an experimental area 

 of the department of forestry at Cornell University to determine the relative 

 rates of height growth and root development and the mortality during the first 

 season of planting with various grades of red pine and white pine nursery 

 stock. The data given are for the one season, 1915. 



All grades of stock commenced and ceased height gi-owth during the same 

 period. The better the grade of stock planted, the more satisfactory were the 

 results as to growth and absence of mortality. 



Memorandum recommending clean clearing of rubber estates in Malaya, 

 A. Shakples and W. N. C. Belgeave {Agr. Bui. Fed. Malay States, 6 {1917), 

 No. 2. pp. 88-91). — The authors present a general scheme for the treatment of 

 pests and diseases which attack the roots of rubber trees. The reconnnonda- 

 tions herein embodied are the result of work carried out in the mycological 

 laboratory of the Federated Malay States Department of Agriculture duriNg 

 1915-16. 



The production and use of fuel wood, E. Seckest (Mo. Bvl. Ohio Sta., 3 

 {1918). No. 2. pp. 49-54, figs. 2). — This paper contains information relative to 

 the equipment and cost of producing fuel wood, together with hints on using 

 wood for fuel and suggestions relative to woodlot improvement. 



Measuring woodland products, J. B. Berey {Ga. State Col. Agr. Bui. 142 

 {1918). pp. 16, figs. 9). — Methods of measuring and calculating the contents of 

 standing timber and of wood lot products are illustrated and described. 



The distribution of softwood lumber in the Middle West, Pts, I, II. — 

 Studies of the lumber industry, VIII-IX, O. M. Butlee {U. S. Dept. Agr. 

 Rpts. 115 {1917), pp. 96, pis. «, figs. 25; 116 {1918), pp. 100, figs. 25).— A study 

 of lumber wholesaling and retailing in eleven of the Central States, including 



