1920] CONTENTS. V 



Page. 



Relative adhesiveness of the copper fungicides, Butler and Smith 842 



Piokerinj,' sprays, Cook 843 



How the protection of plants has proj,'ressed in Quebec, Maheux 844 



Flas; smut and take-all, Ueed and Dungan 844 



A^ciii of four rusts on barberries in North America, liosen and Kirby 844 



Presoak method of seed treatment, liraun 844 



The treatment of certain seed-carried diseases, Wilson 845 



Diseases of grains, sorghums, and millet in Texas, Taubenhaus 845 



Greenhouse lettuce disease 845 



Hate of desiccation of tubers from normal and diseased potato, Hakke 845 



Tobacco diseases. Chapman 845 



Copper soap and Bordeaux soap spray mixtures, Pritchard and Clark 846 



Wilts of the watermelon and related crops, Taubenhaus 846 



Molding of snow smothered nursery stock, Hartley et al 846 



Diseases of Illinois fruits, Anderson 847 



Apple blotch control, Brock 847 



The cause of bitter pit, Ewart 847 



An undescribed apple spot 847 



Peach canker, McCubbin 847 



Fanning strawberries in relation to keeping quality, Stevens and Chivers_ 848 



Banana wilt, P.randes 848 



Relative susceptibility to citrus canker, Peltier and Frederich 848 



A disease of oil palm, ilaublanc and Navel 849 



Sclerotinia riciui n. sp. parasitic on the castor bean, Godfrey 849 



"Crack-neck": A nonparasitic disease of chrysanthemums. Chapman 849 



Frost necrosis of tulip leaves, Jones and Miller 849 



A Tuberculariaceie on box, Moreau 849 



The overwintering of Cronartium ribicola on Ribes, Taylor 849 



ECONOMIC ZOOLOGY — ENTOMOLOOV. 



Mammals of Panama, Goldman 849 



Plague in California ground squirrels, Harrison 850 



An introduction to entomology, Comstock 850 



Proceedings of the Entomological Society of Nova Scotia for 1919 850 



Factors influencing fumigation results, Woglum S50 



[Economic insects in South Dakota] 850 



Annual loss caused through insects in British Guiana, Cleare 850 



Some potato insects and how to fight them successfully. Hadley 851 



Annotated list of insects of the avocado in Florida, Moznette 851 



Orthoptera of Northeastern America, Blatchley 851 



Coconut scale (AsipidioUis sp.) 851 



Relation of phototropisni to .swarming in the honeybee, Minnicli 851 



< 'lassiticatiou and morphology of bumble bees of central Europe, Kruger_ 851 



Feeding habits of pseudoniyrmine and other ants, Wheeler and Bailey 851 



Scale insects of the Santa Cruz Peninsula. Ferris 851 



Note on the Indian peach aphis (A)turaphis hcUchrysi Kalt.), Baker 852 



Experimental investigation of louse control, Hnse 852 



The use of corn as a trap cj-op for the cotton bollworm, Morrill 852 



The sugar cane borer and its control, Kasargode 852 



Report of the spruce budworm, Blackman 852 



On some forest I.epidoptera, with descriptions of new- species, Heinrich — 853 



CnrrohariUus insectorum mahicosomw (n. sp.), Hollande and Vernier 853 



Ins(»ct life on sewage filters, Parkinson and Bell 853 



The ox warbles and their agricultural importance, Pritsche 853 



Trioxymethylene powder for destruction of .-\nopheles larviv, Roubaud 853 



Conditions affecting nutrition of Anopheles wacvlipenuis. Rouliaud 853 



Experimental inoculation of malaria by Anopheles liidlowi, Dai'Hng 854 



A new species of Phyllotreta, Chittenden 854 



Wood-boring beetles of black locust, Rosewall 854 



Larv.T of North American beetles of the Cleridjp, Boving and Chaniplain_ 854 



Toxicity of organic compounds to wireworms. Tattersfield and Roberts 854 



The ribbed i)ine-borer (Rhnyhnn Unentitm Oliv.), Hess 855 



Cotton boll weevil control by the use of poison, Coad and Cassidy 850 



Bees and their relation to arsenical sprays at blossoming time, Price 856 



