FORESTRY. 541 



logical iihenomenon caused by whatever affects the nutrition of the plant, 

 whether cliniatological. pathological, or agrological. As a result of his observa- 

 tions in coffee plantations of various countries, the author is of the opinion 

 that this abortion is often caused by too much shade and sometimes in con- 

 junction with a too liberal application of green manures and of commercial 

 fertilizers. It is also suggested that too severe pruning under heavy shade may 

 cause the trouble. It is believed that this variety of coffee will do best when 

 grown without shade. 



Classilication of the peony. L. D. Batchelob (New York Cornell Stti. Bui. 

 278, pp. 223-298). — This is the third progress report on the peony investigations 

 (E. S. R., 20, p. 942), which are being cooi)eratively conducted by the American 

 Peony Society and the Cornell Station with a view to correcting the confused 

 nomenclature. The present report discusses the method of describing varieties, 

 color comparisons, and horticultural classification, corrects previous descriptions 

 which have proven to be either incorrect or iucomptete, and describes a large 

 number of varieties tested during the previous season on the station's plats. 

 The peony was also studied on commercial trial grounds at Reading, Pa., and 

 at Queens, Long Island. As in the previous bulletins the descriptions are 

 given subject to such change as fuller experience warrants, since peonies seldom 

 produce blooms that are typical of the variety until the young plants have 

 become established. 



The notes upon which the descriptions are founded w'ere taken jointly by 

 the author, B. H. Farr, and J. Dauphin. 



The development of sweet peas (Garil. Chron., 3. ser., ^8 {1910), No. 1229, 

 pp. Jf2, J{3). — This is an editorial in which consideration is given to the principal 

 color sections into which sweet peas are now grouped with a view of showing 

 the nature of the work still awaiting raisers of new varieties. 



Mendel's law of heredity and its application to horticulture, C. C. Hurst 

 (Jour. Roy. Hort. Soc. [London], 36 {1910), No. 1, pp. 22-52, pis. 8, figs. 15).— 

 A paper read before the Royal Horticultural Society in May, 1909. 



FORESTRY. 



The relation of the experiment station to forestry, C. E. Thorne {Proc. 

 Soc. Prom. Agr. Sci., 30 {1909), pp. 99-101). — A short paper on this subject read 

 before the Society for the Promotion of Agricultural Science. 



The author points out that from a forestry standpoint the experiment station 

 is concerned largely in aiding the farmer to develop his wood lot. 



Protection of forests from fire, H. S. Graves ( U. S. Dcpt. Agr., Forest Serv. 

 Bui. 82, pp. Jf8, pis. 10, fig. 1 ) . — The author discusses the character of forest fires 

 (surface, ground, and crown fires), and the damage by fires, and gives an 

 account of the various methods of preventing fires, including the disposal of 

 slash, the establishment of fire lines, supervision, and patrol. 



Detailed instructions are also given for fighting fires. 



Windbreaks and hedg'es, C. B. Waldron {Norlh IXikota .s7ff. Bui. 88. pp. 3-11, 

 pis. 9).— Popular directions are given for planting windbreaks and hedges, with 

 notes on suitable varieties of trees and plants for this purpose. 



[Forestry section] {Rpt. W. Va. Conserv. Com., 1908, pp. 18-27).— A general 

 survey of forest conditions in West, Virginia with recommendations relative to 

 forest protection and extension. 



The lumber history of Texas for 1909, .T. ('. Dionnk {Texas Dcpt. Agr. Bui. 

 13, pp. 337-3.',7, fig. 1).—A statistical review of the lumber industry in Texas for 

 the year 1909. 



