INDEX. 665 



Orchards — Page. 



injury by rodents 349, 350, 351 



insi'cticides, investigations 317-318 



lossf s from crov s, control measures 359 



Oregon. ])ird reservations, work, 1920, unfavorable conditions SfiG. 371 



Omitholoff\-, economic, investigations 357-3f3l 



Ownership, farm, actiuirement, relation of land tenure methods 21-23 



Ox warble, control 150, 335 



0x1/ tn If. is lambertii, cause of loco poisoning 193 



Oysters, injury- by trade- waste etlluents 270 



Pacific Coast States, search for ])ine blister rust 215 



Packages, weight statement on, law 2fil-2G2 



Panama, Canal Zone, insect investigations 339 



Paper — 



investigations 281-282 



production studies 249 



pulp su])plies in National Forests 49, 230. 231 



shortage, studies of pulp resources in National Forests 251 



Papers — 



nicotine, investigations 61 1 



scientific and technical of department workers in outside publications. . 385-386 



Para-dichlorobenzene, use in borer control 314 



Parasite— 



of Japanese beetle, introduction 314 



of sugar-cane moth borer 333 



Parasites- 

 animal, studies 148-152 



of codling moth, introduction 315 



of corn borer, introduction 209 



of gipsy and brown-tail moths 327-328 



Parks, National — 



birds and mammals, investigations 365-366 



distinction from National Forests 47 



Parrots, thick-billed, habits .'.59 



Pasture grasses, investigations 191 



Patents, public, by employees, work of Solicitor 583, 604-(:05 



Pathological l>ivision. Animal Industiy Bureau, work 136-142 



Peaches, insects injurious, investigations 314 



Peanuts, market news service 543-544 



Pear blight, decrease 217 



Peas — 



insects, investigations 312. 320 



root-rot, control 209 



Pecan, insects, control work 316 



Penn.sylvania, Grove City Creamery, products and output Ill 



Peptones, investigations 146 



Periodicals — 



library work 433-435 



l»rinting, congressional restriction on 3S6-3S7 



Personnel — 



Animal Industrv' Bureau, changes 152 



Chemistry Bureau, number and changes 255, 256 



Crop E.stimates Bureau, changes and losses 406, 407, 414, 419. 426 



Department, changes 59. 62 



Forest Sersdce , changes and needs 223-224 



Library, changes 438-440 



Markets Bureau, changes 537 



Plant Industry' Bureau 160 



Roads Bureau, changes 527, 529 



Solicitor's Office, changes 577, 578 



States Relations Service, changes 445-446, 454, 474 



Pests, animal, investigations 344-354 



Pharmacognosy, lalioratorj' work 274 



Pharmacology, studies 274-275 



Philij}i)ine downy mildew of corn, spread and control 205 



24435— AGB 1920 43 



