1»20] DISEASES OF PLANTS. 443 



rwinireiiK'nfs and uses of ilinVici:t species of tlie genus, together with brief 

 notes on methods of plantin;,', culture and care, enenries, cost of plantations, 

 .•ind returns. 



Jack pine, W. D. Stekkktt (U. S. Dept. A or. Iliil. 820 (1<)20), pp. 7/7, plft. 17, 

 fiiix. 3). — An account of the jack pin* with reference to its distinguishing 

 characteristics, range, forest types, soil, moisture, and light requirements, form 

 and development, reproduction, susceptibility to injury, timber supply, char- 

 icteristics of the wood, utilization, stumpage values, and management. Ap- 

 Iiended to the bulletin, are considerable di;imeter, volume, and yield data re- 

 latin;.' to the jack pine. 



Phili|)pine palms and palm products, \\. H. P.kown and E. D. MEiuJirx 

 ([I'liilippinc] Bur. Forestry Bui. 18 U019), pp. Lit), pi. 1, ftga. .-JO).— This 

 I.idletin contains popular descriptive accounts of the Philippine palms und 

 their pioducts, including also a key to the genera, conspecti of the species of 

 the various genera, and references to cited literature. 



Identification of the economic woods of the United States, S. .T. Record 

 (New York: John Wiley cG Sons, Inc., 1019, 2. ed. rev. and enh, pp. IX+ir,7, 

 jiln. 6, figs. 15). — In the present edition of this work (E. S. R., 27, p. 541), 

 the key to the economic woods has been entirely rewritten anjl rearranged. 

 Several new woods are included, and more of the common names are given. 

 Reference lists and bibliographies have been brought up to date, and recent 

 data dealing with structural and physical properties of woods and wood struc- 

 ture are appended. 



Seventy-eight Preanger wood species, II. Beekman (Dept. Landb., Nijv. 

 in Handel [Dutch East Indies'^, Meded. Proefsta. Boschw., No. 5 (1920), pp. 

 JS6, pis. 60). — A descriptive account, together with photographic illustrations 

 and a determination table, is given of the wood of 78 species of trees grow- 

 ing in I'reanger, Java. Each wood is considered with reference to its general 

 and microscopical characters and appearance, the color of its extract, and its 

 burning properties. 



A proposed standardization of the checking of volunie tables, D. Bruce 

 tJour. Forestry, 18 {1920), No. 5, pp. 5U-5^8, fig. 1). — A contribution from 

 'he University of Washington. The author here proposes that two tests 

 liould be made of every volume table against its fundamental data and the 

 results thereof published with the table itself. The first of these tests is a 

 comparison of the aggregate true volume of the basic trees with that given 

 therefor by the table, and the second is a computation of the average deviation 

 of the individual tree volume from it. 



The height and diameter basis for volume tables, D. Bruce (Jour. For- 

 estry, 18 (1920), No. 5, pp. 549-557). — A contribution from the University of 

 California. The author discusses the use of height and diameter measures 

 for the construction of volume tables, and concludes that for western conifers, 

 at least, the proper program is to prepare volume tables on the basis of 

 diameter breast high and either total height or jnerchantable height to a fixed 

 top cutting limit in accordance with the use to which they are to be put, omit- 

 ting the addition of the third factor of foim until it has been proved needed. 



DISEASES OF PLANTS. 



The Advisory Board of American Plant Pathologists, G. R. LY>rAN 

 (Phytopathology, 9 (1919), No. 5, pp. 201-206).— The origin and function of the 

 Advisory Board of American Plant Pathologists is described and a list given 

 of the members appointed in 1919. 



