1919] FOODS — HUMAN NUTRITION. 667 



Should we dust cotton to control the boll weevil? W. E. Hinds {Ala. Poly- 

 tech. Inst. Ext. Serv. Circ. 31 {1919), pp. 35-42). — The conditions under which 

 dusting cotton can and can not profitably be followed are pointed out. 



How weevils get into beans, E. A. Back (C7. S. Dept. Agr. Yearbook 1918, pp. 

 327-33 Jf, pis. 3). — A popular illustrated discussion, 



A source of confusion in the diagnosis of Nosema apis in adult bees, A. P. 

 Stubtevant (Jour. Econ. Ent., 12 (1919), No. 3, pp. 269, 270).— The author calls 

 attention to the fact that the starch granules from the pollen grains of corn 

 and most of the cereals closely resemble the spores of N. apis. 



Bembecia hylseiformis and Sesia tipuliformis, N. A. Kemner (K. Landtbr. 

 Akad. Handl. och Tidskr., 58 (1919), No. 2, pp. 69-84, fiffs. 15; also in Meddel. 

 Centralanst. Forsoksp. Jordbniksomradet, No. 181 (1919), pp. 18, figs. 15). — 

 A report of studies of these two species and their occurrence in Sweden. A list 

 of 26 references to the literature Is included. 



A revision of the chalcid flies of the genus Harmolita of America, north 

 of Mexico, W. J. Phillips and W. T. Emery (Proc. U. S. Nat. ilus., 55 (1919), 

 pp. 433-471, vis. 10). — In this revision of the genus Harmolita (Isosoma of the 

 authors), which includes some species of very great economic importance, 29 

 species are recognized, of which 17 are described as new to science. 



The species described as new are Harmolita pocp, reared from the seed 

 stalks of blue grass (Poa pratensis) at Richmond and Lafayette, Ind. ; 

 H. dactylicola, reared from orchard grass (Dactylis glomerata) collected in 

 Indiana, Ohio, Michigan, New York, Pennsylvania, and Virginia; E. agropy- 

 rophila, reared from stems of Agropyron sp. collected in eastern Kansas, 

 Indiana, Ohio, Michigan, New York, and Pennsylvania ; H. rufipes, reared from 

 stems of species of Elymus collected in Illinois, Kansas, Nebraska, Utah, and 

 New Mexico, In internodes of which it forms inconspicuous galls ; H. festucce, 

 which breeds and forms galls in species of Festuca in New York, Ohio, and 

 Virginia ; H. hesperus, which forms galls In species of Elymus in Utah, the 

 Dakotas, Nebraska, and Kansas; H. agropyrocola, reared from species of 

 Agropyron collected near Salt Lake City ; H. ovata, reared from species of 

 Elymus from Wellington, Kans. ; H. elymoxena, reared from Elymus americanuH 

 from Santa Cruz Mountains, Cal. ; H. elymicola, reared from stems of species 

 of Elymus collected In Indiana and Virginia ; H. atlantica, reared from stems 

 of species of Agropyron collected in New York, Pennsylvania, Ohio, Indiana, 

 and Michigan ; H. elymophila, described from specimens forming galls on 

 Elymus at Alameda, Cal. ; H. poophila, reared from galls In Poa lucida col- 

 lected at Husted, Colo. ; H. elymivora, reared from stems of species of Elymus 

 collected in Arkansas, Kansas, Illinois, Indiana, Ohio, and Virginia ; H. elymoph- 

 thora, reared from stems of species of Elymus in North Dakota and Nebraska ; 

 n. occidentali-s, reared from inconspicuous galls on stems of species of Agropyron 

 collected in New Mexico and Kansas; and H. gillettei, collected near Glen- 

 wood Springs, Colo. 



FOODS— HUMAN NUTRITION. 



Changes in food value of vegetables due to cooking, M. O. Denton (Jour. 

 Home Eeon., 11 (1919), Nos. 4, pp. 143-154; 5, pp. 200-209 ) .—Results of her 

 extended investigations are summarized by the author as follows : 



" Boiled vegetables may lose as low as 15 per cent or as high as 60 per cent 

 of their fuel value, according to the method of manipulation. Those vegetables 

 which are cooked within their own heavy, intact jackets, such as unpeeled 

 Irish potatoes and beets, will of course lose much less even than this minimum. 



