1919] 



INDEX OF BUBJECTS. 



9T«J 



Plants — Continued. **ga 

 M affected by magnesium car- 

 bonate 836 



as affected by manganese, N.Y. 



Cornell 820 



behavior In unventilatcd chain- 



ben 896 



crop, pnst and present climates, 



U.S.D.A 616 



desert. (See Desert.) 



c -conomlc. Of Mexico 646 



edible, of prickly peat scrubs__ 416 



exploitation, treatise 624 



fertility, problems 4'_'7 



hardening process and develop- 

 ments from frost injury 86 



Imports, U.S.D.A 327 



inheritance of germinal peculiari- 

 ties 131 



methods of sugar analysis 30 



nitrogen percentage require- 

 ment 428 



nutrient solution for 620 



odorous principles Tin 



of British Cuiana 842 



of District of Columbia 160 



on saline soils 424 



ornamental, culture experiments, 



Can 741 



ornamental, diseases. N..T 645 



ornamental, for Nebraska 340 



ornamental, new Insert enemies, 



N.J 758 



ornamental, variety tests, U.S. 



D.A HI 



pectin substances In 804 



polsonou I Polsononj i 



regeneration, law of 824 



relation to reaction of nutrient 



solution 88 l 



response to light 519 



rest periods, U.S.D.A 511 



solution culture experiments! 



technique S I7 



starch-yielding, Qnan 888 



succulent, chemistry of Tin 



succulent, desiccation and respi- 

 ration 29. 228 



succulent. gas interchange 



succulent, rate and course of 



growth 80 



■welling in, as affected by bog 

 and swamp W a ters 



tolerating salt 821 



transpiration 27,427. 820 



woody, food reserve In 128 



Plnsttiodiuiihora bnumirtr. (See Cab- 

 bage clnbrooL) 



Pliismniiarn liticohi. notes 58 



riat experiments — 



field technique 226,628 



standardization 823 



Platinic cblorid, potassium, rapid 



reduction 711 



Platinum — 



recovery from potash determi- 

 nation sor, 



Russia's production of 12 



Pag*. 



PI, no'lomus dratrurtta, stodl 847 



Pleeioooris rapfoeJMe, ■todtsa 



;»/ ifKlni. notes 260 



Pleuropneumonia, PXOdattTO, In 



goate 



Plowing — i 



depths, Okla 62, • 



experiments, Minn \ \ 



Plowriffhtta merhoso, no •■ 



PlOWSOM in citrus grOVSS 417 



Plum- 

 Mack knot. Botes 



black spot, notes, Ofcls 688 



<ii ■ otea 1 



fruit gumming, notes 846,281 



leaf gall, control. Most 468 



louse, mealy, remedies 10] 



pocket, .studies, Mont 4."2 



pocket, treatment, Mont 



silver leaf, notes 



wither tip, studies ggo 



Plums — 



breeding and testing in Minne- 

 sota us 



breeding experiments, Minn 712 



culture in New Mexico, N.M 18 



dropping periods, Minn 740 



pollination 1 i 



spray injury to foliage 1G1 



sterility studies, Minn 740 



Stocks for 44' 



tree census in Washington :: to 



varieties for home orchard, Mo_ 84] 



winter injury. Ind 



ritixiii eriososM^ studies • _ 



Pin nmococi us — 



action on of blood from differ, nt 



species 286 



Immunity, studies | 



Infection in horses ~^i 



studies 4 



Pododermatitis, suppurative, treat- 

 in. -nt 181 



,'hrrra. — 



EescotriosA, notes 881 



s os s th s t , notes r.:t 



• omyia. anthomyld genus 



Poisonous plants 182,800 



• poisoning.) 



•is 



iisumption nnd ■ 



in California 



organic, effect on plants 



Poliomyelitis — 



bodies, a. tioti of human and rah- 



Ml blood on 



In dogs 



relation to rats 85,546 



Pollen — 



extract preparations 



mother cells, cytoh > r, 17 



tube development in mi 

 of Pun/ iris 



tube protoplasm, studies US, Bl - 



water-soluble H in ■— 564 



