990 



EXPERIMENT STATION KECOED. 



Page. 

 Pseudopeziza — 



ribis, treatment 842 



trtfoUi, notes 443 



Pseudotsuga taxifoUa, thinning ex- 

 periments 47 



Pseudotuberculosis in rodents, pa- 

 thology 882 



Fsila rosWj, notes, Mich 650 



Payvhoda spp., biology 552 



Pteromalus eurymi, parasitic on al- 

 falfa caterpillar, U.S.D.A 58 



Ptomaine poisoning, relation to fowl 



typhoid bacillus 478 



Public institutions, supplies in 254 



Puccinia — 



glumarum in barley seeds 642 



graminis in wheat seeds 642 



malvacearum, biology 54 



spp., culture studies 145 



Pullets, feeding experiments, N.J — 570 



Pulp wood industry in Canada 144 



Pulse rate in man after muscular 



work 664 



Pumping — 



machinery for irrigation 187 



plants, steam v. electric, for 



drainage 588 



Pumpkin — 



seed cake, acidity 259 



stem borer, notes 347 



Pumpkins, water requirement, U.S. 



D.A 127 



Pumps, centrifugal, rating chart for. 485 



Purdue University, notes 198 



Purin metabolism, biochemistry of 166 



Purins, formation in soils 618 



Purple scale, notes, U.S.D.A 56 



Purslane, water requirement, U.S. 



D.A 127 



Pus cells. (See Leucocytes.) 



Putrefaction as affected by fluorin 308 



Pyelonephritis, effect on milk 479 



Pyobacillosis of mammary gland, de- 

 scription 376 



Pyrameis cardui, studies 851 



Pyridin — 



derivatives in soils 718 



sterilization of soils by 816 



Pyrilloxenos compactusn.Q and n.sp., 



description 851 



Pyropliorus luminosus, notes, U.S. 



D.A 555 



Pyropolyporus — 



everhartii as a wound parasite- 752 



riiis, notes. Can 441 



Pyrus rivularis as a stock for culti- 

 vated apples, Alaska 45 



Pythium palmivorum, description 



and treatment 149 



Quack grass, eradication, Can 530 



Quarantine laws, animal, U.S.D.A 679 



Quassiin as a contact insecticide, 



U.S.D.A 649 



Quebec Society for the Protection of 

 Plants from Insects and Fungus 

 Diseases 151 



Page. 



Quince rust, notes, Oreg 645 



Quinces, acidity 110 



Rfib, substitutes for 722 



Rabbits — 



as a pest in Alaska, Alaska 54 



breeding in Germany 173 



eradication 778 



immunization against rabies 180 



inheritance of size in 573 



vitality as affected by lead 861 



Rabies — 



immunization 180 



papers on 271 



Radio-active — 



fertilizer, tests, N.J 519 



substances as fertilizers, U.S. 



D.A 324 



Radio-activity — 



effect on vegetation 34 



relation to metabolism in 



plants 329 



Radiographic examinations, prepara- 

 tions for 678 



Radish weevil, notes, Oreg 651 



Radishes — 



growth as affected by sulphur. 724 



insects affecting, Hawaii 753 



preservation by pressure, W.Va_ 416 



Radium as a fertilizer. 111 821 



Rafflnose, preparation 711 



Ragi, culture experiments 227 



Ragweed — 



analyses, N.Dak 169 



western, water requirement, U.S. 



D.A 127 



Railroad ties — 



industry in Canada 238 



preservation, U.S.D.A 47 



Rails, North American, distribution 



and migrations, U.S.D.A 55 



Rain — 



chlorin content 121 



fertilizing value. Can 419 



forests, mountain, in Jamaica 748 



nitrogen content 120, 121, 615, 616 



smoke acids in 422 



Rainbow, horizontal, U.S.D.A 210 



Rainfall — 



after battle, U.S.D.A 614 



and evaporation in eastern 



Pennsylvania 34 



and run-off in Porto Rico 187 



effect on distribution of soil 



particles 511 



heavy, at Kansas City, Mo., U.S. 



D.A 614 



in British Isles 25 



in California 120 



in Great Britain 119 



in India 615 



in northeastern United States 119 



(See also Precipitation.) 



Rainy season in southern Rhodesia 211 



Raisins — 



ripening and cap-stemming, Cal_ 235 



stored. Insects affecting, Cal 245 



