INDEX. 443 



Page. 



Peanuts crushing, adaptation of cottonseed oil mill 396 



Pear thrips, control 29 



Peas, insect pests 230 



Pedigree certificates, animals imported for breeding purposes 88 



Periodical Division, Library, work, 1916 289-290 



Pennsylvania, Grove City dairy, work and creamery experiments 90,92,95 



Pharmacology, investigations 195-196 



Phenological observations, issue of Supplement No. 2 62 



Phosphates, studies and work 210 



Photography, Publications Division 271 



Pig clubs, membership, 1916 82 



Pigoon breeding, experiments and records 87 



Pine beetle, western, damage to forests, investigations and control work_ 226 



Pine, western yellow, yield and reproduction studies 182-183 



Pineapple, yellowing disease, control work 308 



Pingue, sheep poisoning investigations 12<t 



Pink boll weevil, control measures 380-381 



Pittsburgh, market conditions, studies 393 



Plant- 

 Industry Bureau — 



cooperation with Markets Office 413 



library work. 1916 292. 294. 2<>^ 



organization and scope of work 137-138 



personnel, changes 138 



report of Chief 137-154 



inspection, work of Horticultural Board 371-384 



introduction gardens, inspection 379 



pathological investigations 138-142 



physiological investigations 142-143 



quarantine act — 



administration, opinions, etc 347,362 363 



violations 381-382 



quarantines, value in control of foreign pests, etc 30-31. 



Plants- 

 breeding investigations 143-146 



chemistry, investigations 192-193 



diseases — 



control by Federal inspection 378-379 



control work 27-28, 138-142 



foreign, introduction and studies 149-150 



identification in National Forests 183 



poisoning of live stock, investigations 119-120 



quarantine restrictions, foreign and domestic, list 382-384 



water requirements 143 



Plum spot, control work 142 



poisonous plants — 



cattle protection on National Forests, studies 184 



effect on live stock, investigations 119-120 



Pomological districts, investigations 146-147 



Pork production, experiments 81-82 



Porto Rico — 



birds, report 241 



experiment station, work and progress 3(19-311 



Postal laws, violations, reference by Solicitor 350 



Potash — 



kelp, surveys, and experiments 31-33 



manufacture, provisions, assistance of Solicitor 346 



sources, investigations, and studies 209 



Potato- 

 diseases, investigations and control work l.">!)-140 



silage, feeding to dairy cows, experiments 99 



Potatoes — 



acreage and value, increase 12 



economic studies 417 



importations, inspection requirements 379 



plant-breeding work 145-146 



72412°— agr 1916 29 



