INDEX OF SUBJECTS. 



989 



Psylla— Page. 



isitis, life history 755 



mail, remedies 548 



pyri ipyricola). {See Pear psylla.) 



Psj-llidae— 



catalogue 59 



of New World 453 



Psyllopa punctipennis, life history 755 



Pteromalus — 



caridei n.sp., description 355 



dynaster, parasitic on alfalfa weevil 61 



eurymi n.sp., description 355 



Public health, handbook 387 



Puccinia — 



ellisiana, aecial host of, TJ.S.D. A 540 



endivix, studies 746 



kuhnii, -description 145 



malvacearum as affected by external 



stimuli 326 



malvacearum, development 646 



malvacearum, studies 540 



malvacearum , treatment 245 



phleipralen^is, notes 344 



spp. as affected by host, U.S.D.A 540 



spp., inoculation experiments, Minn 146 



spp., viability of teleutospores 540 



suaveolens on California thistle 153 



mbnitens on sugar beets 842 



triticina, notes, Conn. State 641 



Puccinia, North American species, descrip- 

 tions 145 



Pucciniastrum myrtilli, notes 646 



Pulex irritans, bionomics of 353 



PuUets— 



feeding experiments, Ohio 472 



ovariotomy of 572 



Pulleys and belts, selection 590 



Pulp- 

 analyses, N.Y.State 663 



manufacture, soda process, U.S.D.A 715 



Pulvinaria psidii, notes, Hawaii 249 



Pumping— 



for irrigation 587, 588 



machinery for drainage 784 



plants, small, notes, Cal 89 



Pumpkin seeds, large v. small, Vt 634 



Pumps- 

 centrifugal, for irrigation 588 



centrifugal, operation 188 



Purdue University, notes 197, 600 



Purin metabolism, biochemistry of 760 



Purple scale, remedies 549 



Purpura, treatment 378 



Pus cells. {See Leucocytes.) 



Pycnometer, description 811 



Pyrausta nubilalis, notes 252 



Pyrethrum, insecticidal value 350 



Pyridin — 



effect on soil micro-organisms 27 



relation to aroma of coffee 165 



Pyrol, culture experiments 829 



Pythium, dcbaryanum — 



description 51 



description and treatment. Wis 448 



notes 55 



treatment 647 



Quack grass— Page. 



creeping rootstock of 37 



eradication. Wis 438 



Quail- 

 California valley, notes 846 



valley, eating of alfalfa weevil by, 



U.S.D.A 655 



Quarantine regulations in Canada 80 



Quercetin, determination in wine 412 



Quince- 

 blight, notes. 111 644 



rust,new, description 345 



Quinces- 

 diseased, plaster cast of 748 



susceptibilty to bitter pit 244 



Quinin, use against rabies 480 



Quinone, effect on soil micro-organisms 27 



Rabbits — 



immunization against anthrax 82 



immimization against fowl cholera, R.I. 485, 872 



male, as affected by poisons. Wis 876 



treatise 370, 770 



Rabies — 



diagnosis 283,580 



etiology 880 



immunization 880 



treatment 480 



virus, culture experiments 579 



virus, filtrate of, studies 580 



Radio-active emanations of soils 20 



Radio-activity — 



effect on plant growth 129 



of soils of United States 418 



Radiotransmission and weather, U.S.D.A ... 615 



Radish- 

 cabbage hybrid, description 236 



seeds, large v. small, Vt 634 



Radishes — 



carbon nutrition of 426 



growth on calcareous soils, P.R 627, 816 



sulphur in 817 



Radium — 



emanations, effect on plant growth 821 



emanations of the atmosphere 20,511 



in soils of the United States 418 



Railroad ties, exploitation in New Mexico. . . 342 



Railroads in Spain, agricultural extension 



work of 400 



Raimondia, notes 339 



Rain — 



composition 21, 416 



nitrogen content. 812 



transition to blue sky, U.S.D.A 213 



Rainfall— 



as affected by forestation 415 



distribution in Sicily 716 



effect on growth of trees 716 



European, as affected by American tem- 



peratxures 416 



in Hawaii 61 6 



in Rhodesia 511 



in St. Paul, Minnesota 21 



in Tunis 287 



summaries, value 811 



treatise 511 



{See also Precipitation.) 



