1918] CONTENTS. V 



Page. 



How to detect outbreaks of insects and save the grain crops, Walton 54 



Some common garden insects, Troop and Mason 54 



Control of some garden insects, Smith 54 



Entomological notes, Burt 54 



Insects attacking cotton and their enemies, Inglesias 54 



Insects attacking hemp, Noel 54 



Insect enemies of maize, Noel 54 



Behavior of some soil insects in air, carbon dioxid, and ammonia, Hamilton 54 



Arsenical residues after spraying, O'Kane, Hadley, jr., and Osgood 54 



Quassia extract as a contact insecticide, Mclndoo and Sievers 55 



How to test for the presence of nicotin on sprayed plants, Safro 56 



Rules and regulations for carrying out the Insecticide Act of 1910 56 



Gomphus parvidens, a new species of dragon fly from Maryland, Ciurrie 56 



An asymmetrical bird louse on three different species of troupials, Paine 56 



The European earwig and its control, Jones 56 



Preliminary trials with the cacao thrips fungus 57 



Injury by tarnished plant bugs to the vine, Fulmek 57 



The capsids which attack apples, Fryer and Petherbridge 57 



Miscible oil v. fish-oil soap for Florida aleyrodids. Back and Crossman 58 



Control work with phylloxera in Teramo from 1901 to 1916, Grassi 58 



The secondary host of Myztis cerasi, Ross 58 



The gipsy moth and the brown-tail moth and their control. Burgess 58 



The velvet bean caterpillar, Hutson 58 



The coconut-tree caterpillar (Brassolis isthmia) of Panama, Dunn 58 



The banana moth (Notarcha [Nacoleia] octasema) and its control, Leefmans 59 



The cranberry girdler (Crambus hortuellus), Scammell 59 



A little-known cutworm, Euxoa excellens, Gibson 60 



Apple and thorn skeletonizer {Hemerophila pariana), Felt 60 



Notes on the life history of Marmara etotella, Vinal 60 



An infestation of potatoes by a midge, Patch 60 



An improved method of rearing tabanid larvae, Marchand 60 



The house fly, Howard and Hutchison 60 



Fly traps for camps, hospital precincts, and trench areas, Balfour 60 



Hibernation of the house fly in Minnesota, Howard 61 



Key to the subfamilies of Anthomyiidse, Malloch 61 



The food of Drosophila melanogaster, Baumberger 61 



The genua Calosoma, Burgess and Collins 61 



Scientific note on beetles causing damage to cotton in Yuma Valley, McGregor . . 61 



A clerid larva predacious on codling moth larvae, II, Merrill 61 



The asparagus beetles and their control, Chittenden 61 



Some weevils of the genus Diaprepes in the West Indies, Hutson 61 



The tobacco beetlo and how to prevent damage by it, Runner 61 



The henequen curculionid (Sq/phophorus acupunctatus) 62 



The coconut red weevil (Rhyndiophoraferruginea), Henry 62 



The boll-weevil problem, with special reference to reducing damage, Hunter. . 62 



Collection of weevils and infested squares, Coad and McGehee 62 



The introduction into Canada of the ichneumon fly, Hewitt 62 



Second importation of European egg parasite of elm leaf beetle, Howard 62 



A new American parasite of the Hessian fly IMayetiola destructor), Myers 63 



Adult hymenopterous parasites attached to the body of their host, Brues 63 



The type species of the genera of the Cynipoidea, Rohwer and Fagan 63 



The red spider on cotton and how to control it, McGregor 63 



New species of economic mites, Ewing 63 



FOODS — HUMAN NUTRITION. 



Report on canned vegetables, Bigelow 63 



The adequacy and economy of some city dietaries, Sherman and Gillett 63 



The food of working women in Boston, Eaves 64 



A new form of food chart: The inometer, Johnson 64 



ANIMAL PRODUCTION. 



The selection problem, Pearl 64 



The theory of the gene, Morgan 65 



Statistical studies of the number of nipples in the mammals, Harris 65 



Skulls of hybrids between wild and domestic horses and cattle, Philiptschenko . . 65 



