972 



EXPERIMENT STATION RECORD. 



[Vol. 37 



Pruning— Page. 



eflect on fruit bud formation 646 



investigations, methods 239 



notes, W. Va 344 



problems in Hood River Valley, Oreg. . . 41 



treatise 41,242,344 



Prunus— 



crown gall resistance in 655 



new canker disease of 251 



Prussic acid. (See Hydrocyanic acid.) 

 Paeudocnccus cilri. (See Citrus mealy bug.) 

 Pseudoglobulin, transformation into globulin, 



U.S.D.A 77 



Psevdomonas— 



campestris, ijotcs 550 



cilri, eradication, U.S.D.A 556 



cUri, inoculation experiments S43 



cilri, notes 556, 657 



cilri, studies, Fla 650 



fluorescent in soils, N.Y. State 516 



piaieoli, notes 550 



phaseoli, treatment, Co'o 248 



sp. on soy beans S42 



spp. on vegetables in Ontario 150 



Pseudope:iza Iracheiphila. notes 246, 555 



Pseudotachinom<jia webberi n.g. and n.sp., 



description "63 



Pseudotuberculosis— 



in guinea pigs 377 



in horses 378 



in swine S2 



Psylla mali, studios "61 



Pieris aquilina injurious to horses 1S2 



Pteroptriiausirali-1 n.sp., description 460 



PlerygogramrrM acuminata n.g. and n.sp., 



description 855 



Puccinia— 



chondrilLr, notes 650 



:oroni/era. studies, Mo 749 



glumarum, notes 650 



graminis, infection through wheat seed . . 751 



graminii, new strain 749 



mat/dis, notes 452 



menthie, notes 457 



oryzx, notes 50 



pruni-ipinofse, notes 550 



purpurea, notes 4.'>2 



TUbigo-vera. specialization 149 



spp. in British East Africa T).! 



spp. on Oiiagracofc 552 



trit'.cina, notes, Mo '49 



Pulpwood— 



industry in Canada 215, 74S 



of Brazil 452 



purchasing 452 



(See also Wood pulp.) 



Pulses, breeding experiments S27 



PtihiniiriaiUis (~-nnumerabilis). (Sec Maple- 

 scale, cottony ) 



Pumping for irrigation, Xobr 384 



Pumpkins — 



breeding experiments f^' 



culture experiments, Guam 743 



drying 509 



ertilizeroxperiments, Guam 742 



Pumps— 



centrifugal, manual 5S5 



irrigation, U.S. D..\ 5S5 



Pumps— Continued. Page. 



irrigation, powerfor 786 



irrigation, tests, Mont 283 



motor -driven deep- well, maintenance 



costs 585 



Punga bark , fiber from 535 



Purdue University . notes 97, 196, 497, 700, 896 



Pyralids, new, from British Guiana 564 



Pyraustinae, North American, notes 564 



Pyroderces rilcyi, description, U.S.D.A 564 



Pyrogallol, extraction with ether 414 



Pyroracemic acid, decomposition by dead 



plants 201 



Pyrox, fungicidal value, Nebr 447 



Pythiacystis sp. on avocado 555 



Pythium debaryanum, notes 148 



Pyzinia n.spp. . descriptions 558 



Quack grass, eradication, Minn 227 



Quince diseases, notes 51 



Quinces- 

 acid content 715 



drying ,■>(>!> 



pruning and training, W. Va 341 



spraying, N. J 741 



Quinin, methods of analysis 113 



Qninone-phenolafe theory of indicators 409 



Rabbit serum, anaphylatoxin produced in 579 



Rabbits- 

 care ;ind management 775 



efTect on vegetation 75S 



Rabies — 



control 274,577 



immunization 480, 690 



Radish maggot, screening 261 



Radishes — 



culture experiments, Guam 742 



fertilizer experiments, Guam 742 



Tariclies. S. Dak 143 



watering, continuous 543 



Radium— 



in honey .">70 



therapy, effect on metabolism in lym- 

 phatic leukemia 267 



RalTinose— 



occurrence in jute seed 710 



physiological beha\ior 571 



Ragweed pollen, composition 612 



Rahar, culture experiments 826 



Rainbows, papers on, U.S.D.A 115,513 



Rainfall— 



and run-oflin Oahu, Hawaii, U.S.D.A . . 513 



asatfected by cannonading 41S, 512, 717 



in India 716 



In Indo-Chlna 620 



in Java 16 



in upper Pecas Valley, New Mexico, 



U.S.D.A SOS 



May and June, U.S.D.A 31.i 



minimum, determination 315 



relation to chestnut blight 557 



(See also Precipitation. > 



Rainwater, dissolved oxygen in 620 



Raisins, drying 114 



Uamie, cultur* ^0 



Kamularia — 



n.spp., descriptions 74-< 



t'iolar, notes 550 



