INDEX OF SUBJECTS. 



1289 



Page. 



Plants, distribution, in the Gold Coast. . . . 944 



dry weight as affected by light 831 



effect on atmospheric temperature 



and humidity 1011 



elementary lessons on 892 



evolution, treatise 1128 



factors affecting distribution .... 627, 632 



seasonal activities 632 



determining structure of . . . 126 



feeding and growing 1091 



fertilizer requirements 639 



flowering, variations in 539 



for sand-binding purposes 1045 



forage as affected by diseases 346 



forcing with anesthetics, U.S.D.A . 1093 



Vt 235 



electricity 944 



formaldehyde in, studies 24 



grafted, assimilation and respira- 

 tion 728 



herbaceous, ringing experiments, 



U.S.D.A 894 



hydrocyanic acid in 426, 932 



imports, U.S.D.A 529 



inoculation experiments 726, 832 



leafy, transpiration in 931 



light requirements, treatise 930 



organic silica in 224 



ornamental, culture and care 341 



insects affecting 445 



propagation, lessons on, U.S.D.A . . 793 



proteases of, investigations 931 



protection, Ariz 1194 



protective effect of hydrocyanic 



acid in 933 



regeneration, studies 323 



relation to animal distribution 960 



soils 390 



resistance to drought 225 



studies 392 



toxic properties, bibliography. 1129 



substances as affected by soil 



bacteria 520 



treatise 632 



variation, studies 529 



xenia experiments 23 



Plasmodiophora brassicoe. (See Cabbage 



club root.) 



Plasmopara cuhensis, prevalence in Ohio.. . 955 



Plaster, fertilizing value 523 



land. (See Gypsum.) 



Platyparea paciloptera, notes 554 



Platypus compositus, notes, U.S.D.A 55 



Pleospora trichostoma , notes 46 



Plpuro-pnoumonia, notes 278 



prevalence in Germany. 1182 



treatment 781 



Plodia interpunctella as affected by cold. . 354,663 



Plow, traction, rotating 286 



Plonrighlia morbosa, notes 953 



Plum aphis, notes 451 



bacteriosis, studies, Del 445 



brown rot, treatment, N.J 655 



curculio, notes, N.J 661 



56691—08 5 



Paga 



Plum curculio, notes, Okla 1055 



remedies 553 



Del 451 



die bacic, investigations 250 



diseases notes 742 



Del 445 



hybrid, description 439 



scale, notes. Mass 768 



Plums as stock for peaches, N.J 1037 



breeding e.xpcrimonts, Can 1140 



cold storage . . 1143 



culture in Lake Superior region, Wis. 141 



Massachusetts 742 



Ontario, Can IKO 



Pennsylvania 741 



fertilization investigations, Can 1141 



injury by Bordeaux mixture, N.Y. 



State - 50, 51 



insects affecting 159, 742 



plant food used by, N.J 644 



pruning experiments 143 



twig growth, N.J 645 



varieties 338 



Can 36,944 



for Oregon, Oreg 38 



the Pacific slope 946 



Plusia gamma, notes 57 



Pneumoenteritis, prevalence in Cape Col- 

 ony 1083 



Pneumonia, chronic, in cattle, studies 884 



etiology of 381 



in horses, sources of infection. . 786 



treatment 187 



septic, in calves, bibliography. 184 



treatment 7S1 



(See also Pleuro-pneumonia.) 



Podosphcera leucotricha, notes 448 



oxyacantha, notes 953 



Poisons, use in agriculture 964 



Polarimeter observations, U.S.D.A 1113 



Polenske nimiber, determination in butter. 1111 



variations in 914 



Poles, arbor-vitse, preservation, U.S.D.A .. 952 



consumption in 1906, U.S.D.A 950 



preservation, cost, U.S.D.A 244 



seasoned, as affected by various pre- 

 servatives, U.S.D.A 243 



telephone, preservation, U.S.D.A 150 



Polyembryony, notes 126 



Polyneuritis in fowls 188, 688 



Polyporus ndustus, notes, U.S.D.A £50 



ignarius, notes 349 



lacteus, notes, U.S.D.A 550 



radiatus, description 165 



sp., description, Can 9^3 



Polystictus hirsutus, notes, U.S.D.A 550 



Poljoiria, toxic, in horses 583 



Pomegranates, varieties 3.38 



Pomelos, varieties, Hawaii 438 



Pomology, field investigations, U.S.D.A ... 647 



status at Maine Station, Me 1142 



Popcorn, breeding experiments, N.J 646 



Poplar, Carolina, characteristics 1147 



Lombardy, diseases, notes 957 



