1917] ECONOMIC ZOOLOGY ENTOMOLOGY. 53 



process of clearing and thinning and in such sanitation measures as giving 

 early attention to wounds arising from different causes. 



Cryptogamic diseases of forest trees, P. Guinier {Vie Apr. et Rnrale, 6 

 {1916), No. 45, pp. 3S4-33S, figs. 6).— Briefly discussing types of fungus tree dis- 

 eases, circumstances favoring their development, and measures for their control 

 in forest areas, some of which are said to show deterioration as regards both 

 the quantity and the quality of growth produced, the author holds that remedial 

 measures, to be practically preventive, must look to the prevention of disease 

 by the improvement of living conditions for the trees. 



ECONOMIC ZOOLOGY— EITTOMOIOGY. 



Bird friends. — A complete bird book for Americans, G. H. Trafton {Bos- 

 ton: Houghion Blifflin Co., 1916, pp. XVni+330, pis. 30, figs. 7).— A popular 

 work relating to the value of birds, their enemies, attraction and protection, 

 and study in schools. 



How to make friends with birds, N. M. Ladd {Garden City, N. Y.: Double- 

 day, Page cC- Co., 1916, pp. 10-228, figs. 165).— A small pocket guide. 



The birds of Britain: Their distribution and habits, A. H. Evans {London: 

 Cambridge University Press, 1916, pp. XII+275, figs. 94). — A short handbook 

 which includes the results of the most recent observations of British birds. 



The zoological position of the Sarcosporidia, H. Crawley {Prqc. Acad. 

 Nat. Sci. Phila., 6S {1916), pt. 8, pp. 379-3SS). 



Microtechuical methods for studying certain plant-sucking insects in 

 situ, K. B. Brown {Science, n. ser., 44 {1916), No. II4S, pp. 758, 759). — The 

 author describes methods which he hns made use of for determining the rela- 

 tion of certain slicking insects to their host plants. 



Studies on gregarines, Minnie E. Watson {III. Biol. Monographs, 2 {1916), 

 No. 3, pp. 258, pis. 15). — This work includes descriptions of 21 new species and 

 a synopsis of the eugi-egarine records from the IMyriapoda, Coleoptera, and 

 Orthoptera of the world. 



[Cranberry insects], H. J. Franklin {Ann. Rpt. Cape Cod Cranberry Grow- 

 ers' Assoc, 28 {1915), pp. 19-31). — Substantially noted from another source 

 (E. S. R., 36, p. 54). 



The role of insects as carriers of fire blight, H. A. Gossard {Ohio State 

 Hart. Soc. Ann. Rpt., 49 {1916), pp. 73-83). — The observations here reported, 

 relating to the honeybee, have been largely noted (E. S. R., 35, p. 662). 



Summary of the season's experiments with the newer insecticides, J. S. 

 HousER {Ofiio State Hort. Soc. Ann. Rpt., 49 {1916), pp. 49-56). — A summary 

 of the work at the Ohio Experiment Station from which the author concludes 

 that the home-boiled, dilute lime-sulphur wash, the commercial concentrated 

 lime-sulphur wash (1:7), and the soluble oils (usually 1:15) are standard 

 remedies for the San Jos§ scale and will control it if properly applied. The 

 soluble oils, used at the strength of 1 : 15, controlled the elm bark louse, t-he 

 elm Aspidiotus, the tulip tree lecanium, the pit-rhaklng oak scale, the scurfy 

 scale of the honey locust, the Putnam scale, the oak kermes, and the obscure 

 scale. 



Analyses of some more recent and older pest remedies, M. R. Miller {Mo. 

 Bui. Com. Hort. Cat., 6 {1917), No. 1, pp. 23-26) .—Thin paper reports upon 

 analyses made of newer remedies and of those in regard to which there appears 

 to be doubt as to their composition. 



Fly poisons. — Studies on sodium salicylate, a new muscicide, and on the 

 use of formaldehyde, E. B. Phelps and A. F. Stevenson {Pub. Health Rpts. 

 [U. S.], 31 {1916), No. 44, pp. 3033-3035).— The authors find that a 1 per cent 



