1917] 



INDEX OF SUBJECTS. 



963 



Orchards— Continued. Page. 



management, Wis 341 



rejuvenation, Ohio 40 



renovation and operation, Ind 640 



spraying 535 



straw mulch in 297 



Orchids, insects aflecting 555 



Oregon College, notes 99, 196, 696 



Organic- 

 matter, loss in green manuring, Ohio 324 



matter, role in soils 197 



matter, vegetable, humification 115 



products, utilization by plants 225 



Organisms, living, isolation 275 



Ormyrus n.sp., description 557 



Ornamental plants, shrubs, or trees. {See 

 Plants, Shrubs, and Trees.) 



Ornithology, British , bibliography 251 



Orobanche spp. on tobacco 449 



Orthoclase as a source of potash 728 



Orthoptera in vicinity of Lafayette, Indiana 252 



Orthopteroid insects of Philippines 355 



Orthotylus of North America, monograph — 253 



Ortsand, formation 813 



Ortstein, formation 813 



Oryza manilcnsis, description 531 



Osage oranges for dairy cows 374 



Oscillaria prolifica, composition 201 



Osteomalacia, summary and digest of data... 161 



Osteoporosis in horses 780 



Otionhynchus — 



ovatus, studies, Mass 156 



sulcatus, notes 859 



Ox- 

 muscle, autolysis in, U.S.D.A 109 



saliva, diastase in 82 



warble larvae extract, effect on cattle 478 



Oxidase — 



action, mechanism 609 



reactions, studies 503 



reagents, color changes in 224 



relation to catalase in plant tissue 610 



Oxidases — 



r61e in plant respiration 329 



studies 224 



Oxidation potential, measurement 224 



Oxycholesterol, color reaction for 112 



Oxygen— 



and carbon dioxid, effect on nitrogen 



transformation in soils, N.Y.Cornell... 724 



effect on germination of aged seeds 29 



Oxythrips, synopsis 550 



Oyster-shell scale, remedies 857 



Oyster shells — 



analyses 821 



ground, mixing with acid phosphate ■ 325 



Oysters — 



destruction by crabs, N.J 853 



examination • Me 159 



floating or swelling, N.J 861 



green, copper content, N.J 861 



propagation, N.J 871 



soUdity, N.J 861 



Pachyneuron mucronatum n.sp., description. 556 

 Paddy. (.See Rice.) 



Paints— Pago. 



for highway bridges, tests 384 , 587 



inspection in Iowa 762 



Palm- 

 kernel cake, digestibility 764 



oils, composition 8C3 



Pancreas, function of 5' 2 



" Panga" fruits as a tanning material 5C9 



Panicum san^uinale, root system 4.38 



Pa-paver somniferum, alkaloids, latex, and o.\i- 



dases in 127 



Papaveraceae, oils and alkaloids of 628 



Papaws, specimens in United States 445 



Papaya flowers, variation in 241 



Papayas, culture and use 241 



Paper- 

 milling, Ives tint photometer in 207 



wet, determination of strength 509 



PappophoTum scabrum, analyses 334 



Para rubber. (See Rubber.) 



Paracalocoris, nearctic species 654 



Paracasein, digestibility as affected by ren- 



nin 559 



Paraphelinus speciosmimus, studies 258 



Parasa latistriga, notes 654 



Parasites. (See Animal parasites, etc.) 

 Parcel post- 

 marketing apples by, Ohio 742 



marketing farm produce by 91 



Pardianlomellaibscni, notes, U.S.D.A 155 



Parenchyma wood, formation after winter 



injury 431 



Paris green, methods of analysis 715 



Parks, treatise 743 



Parsnip mildew, notes 541 



Parsnips, food value, U.S.D.A 863 



Parthenocarpy, notes 331 



Paspalum dilatatum, root system 438 



Passeromyia heterochxta, notes 359 



Pastures- 

 fertilizer experiments 425, 735, 740 



fertilizer experiments, Ohio 829 



in Manitoba and Saskatchewan 437 



in southeastern Ohio, Ohio 34 



irrigated, grasses for, U.S.D.A 132 



irrigated, value, U.S.D.A 173 



Patellina fragarise n.sp., description 452 



Pathology, special, guide 378 



Patrogenesis in plant hybrids 28 



Patrons of Husbandry, history 688 



Pavements — 



brick, monolithic construction 384 



concrete, design 890 



construction, treatise 285 



macadam and concrete 188 



monolithic, in Vermilion County, lUinois 188 

 Pea- 

 bran, analyses, Mich 766 



cannery refuse, feeding value 167 



collar disease, studies 749 



weevil, studies, N.J 855 



Peach- 

 borer, lesser, notes, N. Y.State 549 



borer, remedies, N.J 855 



borer, studies, N.J 857 



