1920] FORESTRY. 441 



current year, and that as a rule whore the trees are In vigorous condition and 

 receive good cultural treatment they will return to' normal production at the 

 end of one year. 

 A review of the coconut investigations at the College of Agriculture, 



R. B. EsiMxNo il'liilippine Ayr., 8 (1919), No. 5, pp. 161-178).— A review of the 

 results oI)taiiied from ohservations and experiments on the coconut carried 

 out at the College of Agriculture, Los Banos, P. I. The results are discussed 

 under the following lieadiiigs: Study of varieties, the coconut and environment, 

 chemistry of the coconut, cultural experiments, and diseases and pests. A 

 list of cited literature and of present and contemplated coconut projects is 

 appended. 



IVcan varieties, grades, standards, and packages, O. A. Reed {Amer. 

 Nut Jour., 12 {1920), No. 6, pp. 82, 93). — A popular discussion of pecan varie- 

 ties and methods of preparing the nuts for the market. 



Sweet peas and antirrhinums: How to grow them to perfection, 

 W. CuTiiREKTsoN ('London: ,James Clark cC- Co., 1919, 2. ed., rev., pp. 119, 

 figs. 28). — A small, practical treatise on the culture of sweet peas out of doors 

 and under glass, including also information relative to the best varieties for 

 different purposes, cutting and arranging, raising new varieties, diseases, and 

 insect troubles. A section of the book is also devoted to the different classes, 

 varieties, and culture of antirrhinums. 



Native plants suitable for the gardens of Missouri and ad.joining 

 States. — V, Native perennials for the hardy border {Missouri Bot. Card. 

 Bui., 8 {1920), No. 6, pp. 69-79). — A contribution from the Missouri Botanical 

 Garden, comprising a tabular list of hai'dy perennials, for the nwst part native, 

 but containing a few introduced species, that are adapted for planting in 

 Missouri and adjoining States. The data for each plant include the botanical 

 and common name, approximate height, color of flowers, and the approximate 

 time of bloom. 



Flowering trees and shrubs, T. R. Sim {Johannesburc/, So. Africa: The 

 Specialty Press, Ltd., 1919, pp. 200, pi. 1, figs. H5). — Descriptive accounts are 

 given of flowering trees and shrubs that are in common use in South Africa 

 and are easily obtainable. Information is also given relative to the selection 

 of trees and shrubs for various purposes, as well as their propjigation, culture, 

 and care. 



Lawn grasses for South China, H. B. Graybill {Canton Christian Col. Bui. 

 25 {1920), pp. 6, pis. 6). — A contribution from the Canton Christian College, 

 comprising notes on lawn making and grasses suitable for lawns in South 

 China. 



FORESTRY. 



Cooperation between the Federal Government and the States, J. G. 



I'KTEBa {Jour. Forestry, 18 {1920), No. 5, pp. 477-485). — In this paper the 

 author discusses various forest activities in which it is believed cooperative 

 effort between the Government and the States is essential to secure i-esults com- 

 mensurate with the needs of the country. 



The Tri-State Forestry Conference, Ohio, Illinois, Indiana {Ind. Dept. 

 ('onstcrv.. Pub. No. 10 {1920), pp. 103). — This comprises a report of the papers 

 and discussions on forestry problems at the Tri-State Forestry Conference 

 held at* Indianapolis, Ind., October 22 and 23, 1919. 



Plan of relation of forest regulation to forest communities, M. H. Wolff 

 (Jour. Forestry, 18 {1920), No. 5, pp. 486-497). — A discussion of some of the 

 principles on which regulation on the Coeur d'Alene National Forest is^ based, 



