INDEX. 499 



Weevil — PaRp. 



alfalfa, control methoda 238 



stored grain, control bv heat and cold, studies 245 



Wheat— 



bacteriosia, description, and prevention, studies, 1917 134-135 



fertilizers, effect on composition and yields, studies 199-200 



inspection and gradiu<?, results, 1917 40 



production, 1916, 1917, discussion by Secretary 3, 32 



rotations in Southern States 144 



White Mountains, forest lands, accjuisitions 189 



Whitney, Milton, report as Chiet of the Bureau of Soils, 1917 219-226 



Williams, Wm. M, report as Solicitor 381-409 



Wintering bees, investigations 249 



Wire, screen, testing 236 



Wireworms, beet, control work 242 



Women, farm demonstration and extension work 340-342, 353-354 



Wood- 

 drying, studies and cooperative work 166, 167, 195, 196 



l)reservation, work of Forest Service, 1917 196 



Wool- 

 marketing investigations 443 



supply, market report 460 



Worms, animals, remedies, experiments, and results 121 



Wyoming, Elk Winter Refuge, report, 1917 259-260 



X-ray, sterilization of stored products, experiments 245 



Zappone, a., report as Chief of the Di\'ision of Accounts and Disbursements, 



1917 267-269 



Zoological Division, work on animal parasites. 117-124 



Zygobrothia nidicola, parasite of gipsy moth, establishment 229 



o 



