INDEX OF SUBJECTS. 



891 



Page. 



Plants— Continued. 



light requirements, studios 723 



lime and njagnesia for 12S 



losses of plant food from 18 



mciicinal, of Pima Indians 469 



nematodes alTccting 741 



nonleguminous, relation to nitrogen-fix- 

 ing bacteria 122 



ornamental, analyses 210 



culture 145,343 



experiments,N.Mex. 733 



diseases of, notes 46,355 



for screens, Ariz 039 



insects affecting C4G 



treatise 243 



varieties, Alaska C39 



osmotic pressure in, studies 526 



parasitic, seed germination 628 



pastiue, in New York, N.Y.Cornell 529 



perception of light by 724 



phytochemical investigations 29 



poisonous, researches in 582 



precooling, descriptions 540 



protection against fungi 228 



relation of light to green parts in 428 



respiration In , as affected by poisons 029 



investigations 429 



r61e of boron in 230 



hydrocyanic acid in 330 



root-aphis affecting, U.S.D.A 558 



rosaceous,scale insects affecting, U.S.D. A. 156 



sterility, investigations 777 



succulent, water-balance in 130 



transformation of starch and fat contents. 725 



transpiration in 130 



Investigations 130, 724 



tropical, abnormal growth 227 



utilization of soil moisture by 121 



variation in 227 



as affected by mutilation .... 133 



wild, use as food 668 



yellow-bear caterpillar affecting, U.S.D. A. 760 

 Plasmodiophora brassicse. (See Cabbage club 

 root.) 



Plasmodium n.spp., anatomy 488 



Plasmopara cubensis, treatment 47 



vUicola, biology 251 



Plaster, land. (See Gj-psum.) 



pad, misbranding, U.S.D.A 7G9 



Platinum, waste, recovery 213 



Platymetopius spp., descriptions 757 



Platypidae, notes 756 



Platyura n.spp., descriptions. Me 159 



Plectridium pectinovorum, organism resem- 

 bling 030 



Pleosphzrulina briosiana, notes 740 



Pleospora oryzx n.sp., description 347 



Pleuro-pneumonla— 



bovine, morphology of microbe in 85 



contagious, relation to animal experi- 

 mentation 182 



pathological anatomy In 484 



P/euroiropis n.spp., descriptions, U.S.D.A. . . 162 



Plowing, early, effect on j'ield of cereals 310 



experiments 135, 136 



Plowrlghtia agaves, notes 152 



Page. 



PlowrighUa ribesia, notes 646 



Plum aphis, southern, studies, Okla 156 



curculio. Injurious to apples, W.Va 160 



notes, W.Va 259 



Wis 59 



remedies, U.S.D.A 59 



diseases, treatment, Md 252 



fniit moth, introduction Into England. 459 



gouger, notes, Wis 59 



products, salicylic add in 709 



scab, treatment, U.S.D.A 59 



webworm, life history and remedies ... 7C0 



Plumage color, inheritance 76 



Plums, chemistry of 414 



culture in Wyomhig, U.S.D.A 189 



endotrophic mycorrhlza In 528 



fertilizer experiments 23 



Insects affecting. Wis 59 



preparation for marketing, U.S.D.A . . 144 



scale Insects affectmg, U.S.D.A 156 



varieties, Iowa 242 



Plymouth Rocks, egg production by 380 



Pneumococcus In mice 657 



vaccines, use 482 



Pneumonia, contagious, in pigs, outbreak 589 



post-operative, use of vaccines in 482 

 (,Seealso Pleuro-pneumonia.) 



Poa compressa, host of plum aphis, Okla 150 



nevadensis, analyses, Nev 71 



sandbergii, analyses and digestibiIIty,Nev 72 



serotina, culture 436 



Pod rot, studies 740 



Podisus maculiventris notes, W.Va 202 



spp., Injurious to cotton, U.S.D.A 402 



Poisons, effect on plant respiration 629 



Polarimeter observations, U.S.D.A 311 



Polariscope, compensation , studies 7 



Poles, telegraph. Injured by capricorns 665 



Poliomyelitis, acute anterior, in chickens 690 



Pollenia rudis, parasitic on earthworms 703 



Polygonum aviculare as affected by lime 533 



Pol5T)eptids, determination in urine 217 



use In study of enzyms 703 



Polyporus spp., notes 456,751 



Polyslictus hiTsutus, investigations 450 



notec 247 



occidentalis, notes 552 



spp., studies 354 



versicolor, relation to hall 131 



Polysulphids— 



alkaline, effect on spraying apparatus 554 



determination in lime-sulphur spray 701 



Pomegranates, introduction from Palestine, 



U.S.D.A 538 



Pomology in Calvados, France 440 



Ponds as water supplies In Indiana 713 



fish, fertilizer experiments 018 



small, use for flsh production on farms 119 

 Ponies. (See Horses.) 



Poplar bark, use In Russia 246 



disease, notes 553 



Poplars as affected by soil nitrates, Colo 221 



scale Insects affecting, U.S.D. .\ 150 



Popples as affected by mineral salts 328 



Poppy, Mexican, description and eradication. 639 



Populus nigra bark, use in Russia 246 



