FOKESTKY. 347 



capreolata), and the Japanese catalpa (C. kwmpferi), together with an account 

 of the trumpet creeper leaf miner (Octotoma pUcatula) and its control. 



Utah juniper in central Arizona, F. J. Phillips and W. Mulford (U. S. 

 Dept. Agr., Forest Serv. Circ. 197, pp. 19, pis. 2, fig. i).— The Utah juniper 

 (Juniperus ntahensis), which is considered the most important tree of the wood- 

 land forest of central Arizona, is here discussed relative to its distribution, 

 climatic requirements, botanical characteristics, silvical characteristics, growth, 

 volume, yield, utilization, and management. 



Quebracho wood and its substitutes, C. D. Mell and W. D. Brush (U. 8. 

 Dept. Agr., Forest Serv. Circ. 202, pp. 12, pis. 2, fig. i).— This circular discusses 

 the uses and distinguishing characteristics of the quebracho (Quebrachia 

 lorentzii), a South American wood yielding a valuable tanning extract, and of 

 the principal woods substituted for the quebracho, and presents a key for their 

 identification. 



Cinchona in Java from 1872 to 1907, being extracts translated from the 

 Scheikundige Bijdrag'en tot de Kennis der Java-kina, 1873 to 1907, K. W. 

 VAN GoRKOM, edited by D. Hooper {Agr. Ledger, 1911, No. 4 {Veg. Prod. 

 Ser. No. 115), pp. 35-106). — ^An English translation of the author's pamphlet, 

 abridged and rearranged with special reference to its application to the cin- 

 chona industry in India. It comprises a historical account of the botanical, 

 cultural, and chemical investigations which have been conducted in connection 

 with the cinchona industry in Java. 



Castilla and its culture, P. Olsson-Seffer (Dept. LandJ). Suriname Bui. 27, 

 1912, pp. 66, pis. 7). — The late author's English manuscript on the culture and 

 preparation of Mexican rubber is here translated into the Dutch language by 

 J. Kuijper, and a summarized account of Castilla rubber in Surinam is ap- 

 pended, in which Castilla rubber is considered relative to its botany, distribu- 

 tion, species and varieties, cultural details, tapping, preparation of the rubber, 

 and marketing. 



A test of daily versus alternate daily tapping of Hevea, C. J. J. van Hall 

 (Teysmannia, 23 {1912), No. 2, pp. 92-99).— Two lots of 300 trees each were 

 tapped from March 15 to December 14. In the first period lot A was tapped 

 daily and lot B every other day. The tapping was reversed in the second 

 period, resumed in the third period, and again reversed in the fourth period. 



The data as here tabulated indicate that daily tapping produces a much 

 higher yield of rubber than tapping every other day. 



Notes on bark structure, T. Kruegee {Forest CluT). Ann. [Univ. 2Ve&r.] ^ 

 (1912), pp. 142-156). — ^As a result of a preliminary study of bark structure in 

 a large number of American forest trees, the author presents tentative keys 

 showing the more prominent bark characteristics of each genus as indicated by 

 the limited number of species studied. 



A sample dichotomous table for determination of coniferous species, L. 

 pARDfi {Rev. Eaux et Forets, 51 {1912), No. 11, pp. 340, 3^^).— The author 

 presents a specimen dichotomous key for the purjwse of soliciting criticism and 

 suggestions as to improvement. 



The equipment and operation of a Prussian seed extracting establishment, 

 A, B. Recknagel {Forestry Quart., 10 {1912), No. 2, pp. 229-234,. figs. 2).— A 

 descriptive account, based on a personal insi>ection of a Prussian seed extract- 

 ing establishment and offered as supplementary to a previous article by Wie- 

 becke on the same subject (E. S. R., 23, p. 445). 



The economic returns from forestry, with special reference to the Prussian 

 state forests, Martin {Tharand. Forstl. Jahrh., 63 {1912), Nos. 1, pp. 40-58; 

 2, pp. 79-142). — ^A critical study of the construction and application of yield 



