INDEX. 667 



Pae«. 



Pines, quarantine orders 625, 626 



Pisgah game reserve law, violations and fines imposed 589 



Plant- 

 diseases — 



and insects, control work of Horticultural Board 603-612 



control studies 22 



Industry Bureau — 



Chief, report 161-194 



Library, report of work 398, 399, 407 



organization 161-163 



nutrition — 



studies in Hawaii 430 



work of Plant Industry Bureau 186-189 



pathology, extension work 450-451 



quarantine law, violations and penalties 591, 624 



quarantine enforcement 604-612 



Plants- 

 growth — 



relation to soil solutions 187-188 



under artificial light.. . -. 188 



importation by mail, regulation 614 



importations under restrictions, record 614-622 



inspection at ports of entry 622-624 



mail shipments, terminal inspection 624 



poisonous to live stock, investigations 168-169 



quarantines and other restrictive orders, list 625-628 



Plumes, seizures, value 365 



Poison — 



preparation for animal pests 282 



use in destruction of predatory animals and rodents 333-335, 338-343 



Poisoning, ptomaine, investigation of causes 279 



Poisonous plants — 



investigations in case of animals, reports 50-51, 148-149 



surveys of pastures and ranges 168-169 



Polar expedition, radio communications, provisions 76-77 



Pork, soft, investigations 102, 107-108 



Port inspection, seeds and plants 622-624 



Porto Rico, experiment station, work and expenditures 426, 431-433 



Post Office Department — 



aid by Chemistry Bureau 272 



cooperation in pig survey 16 



Potash — 



borax content, study 297 



recoverj^ from wool-scouring wastes 264 



Potato — 



insects, control 316 



mosaic, control work 185 



wart, control work 612, 626 



Potatoes — 

 growing — 



demonstrations 442 



in Alaska 427 



improvement and disease control 184-185 



quarantine restrictions 626, 628 



statistics, acreage and production, 1910-1922 53, 56 



Potts, Ray C., in charge of dairy and poultry products marketing 517 



Poultry- 

 breeding experiments 112 



diseases, investigations and results 148 



exhibits by Department, 1922 630 



feeding experiments 111-112 



houses, rat control 343 



products, marketing work, 1922 517-519 



Power, farm — 



investigations 502 



requirements, studies Ill 



