840 EXPEKIMENT STATION RECORD. 



A test of butternut and black walnut seedlings from Minnesota seed which 

 is being made in Itasca Park shows that the butternut can withstand the 

 winter successfully but that the black walnut is severely injured. Experiments 

 in late seeding for the purpose of preventing " damping off " in coniferous 

 stock have shown conclusively that during an average season white and Norway 

 pine sown as late as July 12 have developed into sturdy seedlings capable of 

 resisting the winter. The seedlings showed no trace of "damiiing off." 



In connection with the prairie tree planting investigations the work done 

 so far shows that reliable data with reference to the best species of trees for 

 farm planting, methods of planting, cultivation, etc., can not be obtained from 

 the study of the groves now in existence, their history being too incomplete. 



Forest conditions of Mississippi (Miss. Geol. Survey Bill. 11 (WIS), pp. 

 166. pis. Jf, flys. 2). — ^This bulletin consists of reprints of Bulletins 5 and 7 of 

 the same series (E. S. R., 23, p. 344; 24, p. 739), together with a statistical 

 supplement by E. N. Lowe containing data on forest products of Mississippi 

 based on the U. S. Census of 1910. A note on the flora of the forest regions 

 of Mississippi by the same autlior has also been added. 



Possibilities of municipal forestry in New York, N. C. Brown (2V^. Y. State 

 Col. Forestry, Syracuse Univ., Scr. XIV, No. 2 (d) (1914), pp. 19, figs. 8).— The 

 author gives an account of the Syracuse Municipal Forest, calls attention to 

 other similar activities in the State and to successful municipal forests in 

 Europe, and points out the value of municipal forests from the scenic, sanitary, 

 and economic points of view. 



The height growth of trees, Bernbeck (Bot. Jahrh. [JJngler], .50 {1914), No. 

 5, Beiblatt 11 Jf. PP- 19-2 Jf). — ^A brief discussion of the influence of soil, atmos- 

 phere, and light on the height growth of trees. 



Growth studies in forest trees. — II, Pinus strobus, H. P. Brown {Bot. Oaz., 

 59 {1915), No. 3, pp. 197-2Jfl, pis. 2, figs. 2).— In continuation of a growth study 

 of the pitch pine (P. rigida), previously noted (E. S. R., 28, p. 49) the results 

 are given of a similar study of the white pine (P. strodus). 



The important phases discussed include the microscopical characters of 

 the xylem ; winter condition of secondary cortex and cambium, awakening of 

 secondary growth, rapidity and intensity of growth, irregularity and termina- 

 tion of secondary growth, and differentiation in the annual rings in aerial 

 parts; primary growth in aerial and underground parts; and secondary growth 

 in underground parts. 



A bibliography of cited literature is appended. 



Forest fires; their prevention and control, G. Lundberg (Skogsvdrdsfdr. 

 TidsJcr., No. 2 {1915), pp. 113-156, figs. 26). — An account of various types of 

 forest fires and methods of preventing and controlling them. 



Forest valuation, H. H. Chapman {Neiv York: John ^YiIcy cC- Sons, 1915. pp. 

 XVI-\-310). — A text-book and popular guide to that part of the subject of 

 forest finance usually termed " forest valuation." Forest statics, the other part 

 of forest finance, is discussed in a single chapter. The first four chapters of the 

 work are devoted to a summary of economic subjects and tenets, such as values, 

 outlay and income, interest, and valuation of assets. Chapter 5 deals with 

 formulas of compound interest. The succeeding chapters discuss investments 

 and costs in forest production, the valuation of forests, forest statics — the 

 balance sheet — profits, the appraisal of damages, forest taxation, stumpage 

 values, future value of forest products, risks, field appraisals of timber 

 stumpage, and comparison of forest values with agricultural values. 



The appendix contains summaries of formulas of compound interest and in 

 forest valuation, definitions of symbols, and tables of compound interest and 

 logarithms. 



