FORESTRY. 145 



the pecan bloom, selection of varieties, age of bearing, marketing, and the 

 enemies of the pecan. Other phases discnssed include instructions for crack- 

 ing pecans, pecans as food, and the pecan as a shade tree. 



The coconut, E. Prudhomme (Le Cocotici: Paris: Govt., 1906, pp. J/Dl, figs. 

 83). — A treatise on the culture, trade, and commerce of coconuts in the princi- 

 pal countries of production. Part 1 treats in detail of the coconut relative to 

 its botany, culture, and uses. Part 2 deals with the preparation of coconiit 

 products, including copra, oil, fiber, and various derivatives. Part 3 discusses 

 the trade and commercial importance of various coconut products in different 

 countries. 



Ofl&cial catalogue of sweet pea names, 1909, Jessie Cuthbertsox {Brentford, 

 1909, pp. 16). — This catalogue has been prepared under the direction of the 

 National Sweet Pea Society from the seed lists of the principal British and 

 American raisers and distributers, with the view to preserving old names and 

 titles, thus preventing future duplication of names. 



FORESTRY. 



Silvical leaflets (Z7. 8. Dept. Agr., ForeM Serv. Silv. Leaflets -'t6-'>0, pp. 4 

 each). — ^A series of leaflets, each one dealing with the range and occurrence, 

 climate, associated species, habit, soil and moisture, tolerance, growth and 

 longevity, reproduction, and management of one of the following species of 

 trees in the order corresponding to the leaflet numbers above : Limber pine 

 (Pinus flexilis), piilon pine (P. eduUs), pignut hickory {Hicoria glabra), 

 shagbark hickory (H. ovata), and big shellbark, king-iiut hickory (H. 

 laciniosa ) . 



Trees every child should know, Julia E. Rogers (Neic York, 1909, pp. 263, 

 pis. .J7). — This popular work contains tree studies for autumn, winter, spring, 

 and summer, consideration being given to the more common American trees 

 and shrubs. Identification keys to tree groups and families are also given. 



Illustrations of conifers, H. Clinton-Baker (Hertford, 1909, vol. 1, pp. 75, 

 pis. 68). — This work consists of a series of life-size illustrations of the cones 

 and foliage of conifers growing in the British Isles, supplemented by analytical 

 keys of the species and by short and concise descriptions of each tree repre- 

 sented. 



Bamboo in the Dutch Indies, J. A. Loeber, Jr. (Bui. Kolon. il/HS. Haarlem, 

 1909, \o. 1,3, pp. 90, pis. 26, figs. .'/). — This bulletin describes the various uses 

 for which the bamboo may be employed,* as for building purposes, furniture, 

 supporting columns, musical instruments, ornamental work, etc. 



The collection of statistical data relating to the principal Indian species, 

 A. M. F. Caccia ([Indian Forest Dept.] Pamphlet 8, Working-plan Ser. 2, pp. 

 II+II+77). — ^A series of experiments, with the rules and forms governing 

 them, have been drawn up and are here presented, with the hope that after 

 their details have been discnssed by the various forest conservators in India 

 they will be recognized as the standard rules for collecting statistical data 

 regarding the development of the principal timber trees in India. 



A method of studying growth and yield of longleaf pine applied in Tyler 

 County, Texas, H. H. Chapman (Proc. Soc. Amcr. Foresters, // (1909), No. 2, 

 pp. 207-220). — This method is described and discussed. 



The failure of silver fir regeneration in the central Murg Valley, H. Stoll 

 (Das Versagen der Weisstannenverjiiugiing im mittlercn Murgtale. Diss. Teeh. 

 Hoehschule Karlsruhe, 1909, jyp. 6//, figs. 6). — The author presents evidence to 

 show that the common failure of silver firs to reproduce in the region studied, 

 as well as in similar regions of the Black Forest, is brought about by the 



