INDEX. 365 
PacE. PAGE. 
EARN REDE Seay ats ait ud 6 ie alae deeb a's €SS. “Radiopactere nyc sc.cin's bes vidoe pad ee peeled ane 128 
DRAW SOCLION “S02: DOLE 66.65 ook as bases nea 188 Radish black-rot, 
Plant parasites, parasitic on animals.............. 174 (See black-rot of cruciferous plants.) 
Plasmodiophora brassicae, réle of bacteria in devel- Rape, black-rot, 
RNMENESIE NE Sore ON eanrien.- bs ckuis.e.crgly Fo we RRs 170 (See black-rot of cruciferous plants.) 
Plum, black-spot, Ravaz, 
(See black-spot of plum and Bact. pruni.) schizomycete in vine cuttings.................. 70 
SEW ODOR AMORT 2S siok cc's 5 oalp ha we de od vas wee 161 supposed-vine parasite pathogenic to rabbits..... 181 
Polysphondylium violaceum, bacterial parasite..... a72. Reaction: to: parasitic attack. 0.3 s.otiesic as tecaee res. 90 
Popenoe, aresnate of lead, insecticide............. 203 CEB HEO SG ce a peared sone aca be yee MOODLE 94 
Poplar, Lombardy, supposed bacterial disease of... 10 Red spider..............0c ccc eeeeecee eevee 202, 203 
Potassium bichromate, Reinke, symbiosis, Volvox and Azotobacter........ 153 
effect on germination of oats................... 198 Reinke and Berthold, contribution to plant bacteri- 
effect on germination of wheat................. 198 HOEY i 6c iS ca isa ee ate eer CeO 9, 36 
Potassium cyanide, effect on germination of corn... 199 Resistance, fertilizers, effect of................005 96 
Potassium permanganate, effect on germination of Resistance, individual and varietal.............. Ko eS 
SRMIB SRT Ne cries agit) s1the, ACs ae STA Fs 199 Resistant varieties, production of............... 95,96 
Potassium sulphide, Mette OF Nays). toes a sade oe neds yea tao tan 31 
effect on germination of barley................. 200 Rhinanthus major, root-nodules........ ia ime bins et 103 
effect on germination of oats................ 198,200 Rhizobacterium j japonicum gle lca 3:8 5 SOYRS Ie eee oe 99, 100 
effect on germination of wheat................. 200 -Riizobium hetjerinckil. 32:5 640s os. ca deans eaee ine 99 
Potato, Rideal, disinfectants, testing methods............. 195 
BACtCtIAE WEE TOE OFS 8 55 ccc Tey ce ec ntdeees 9 Rideal-Walker test, disinfectants................. 195 
basal stem-rot, occulsion of vessels............. 4  Ritzema Bos, black-rot of crucifers............... 311 
brown-rot, Rogna, saprophytes. if 6666 ve aes ots A Gas ees 32 
(See Bacterium solanacearum.) Roots, protection against bacteria................ 30 
SO RSs aa eee ra eran 9 Root-galls, dwarfing of host... ........0..c0800eseeee 92 
immunity of old tubers............... Surette 48  Root-nodule bacteria, Leguminosae, groups and 
Potato-rot, Appel’s, WAPICHERS fot es Sas Pies oats sce a ed Mb wey 105, 129 
(See also Bacillus phytophthorus.) one or more species............. 99, 102, 115, 116, 129 
Pores = IGT i ee 66 Root-nodule organisms, Leguminosae, 
ROU AMMO I oS late oda eo a85e Kir aes 2 no LETS SO 90 acid vs. alkaline soils, effect of.................5 108 
pn 2 Te OIE Icey re eee 69 bacteroids. <5, o.se20e 2 103, 104, 105, 115, 117, 118, 124 
TE SO OB ee Arr rit oar eee 189 bacteroids, effect of chemicals.................. 126 
Watietses SANCEPUIDIO at ee heen ewes 95 bacteroids, formation and nitrogen assimilation.. 128 
Potato soft-rots, tissues attacked................. 69 bacteroids, formation, nuclear plasma, behavior of 126 
Potato, surface flora of tubers................... 31 bacteroids, non-germination................... 136 
Potato-tubers, bacteroids, sporangial nature of................ 128 
fenticellate infection..............0.eeccceeees 64 brauched foramgrrvt er we ee Oe eee 107, 113 
resistant varieties, composition................. 48 CHOEMICAISHENERE OF 5 waka Gers kbd ce be reuigs 126 
Potter, GWEMOLFOPIRAE Ce orcas AS ONG Sve oo sees olwiaie 117 
bacteria on the surface of leaves............... 35 CIRSEICATON iio oy ote Phos hRteiitee co Set eee et 114 
black-rot of cruciferous plants.............. 306, 332 CFOSS-B1OCUPAHOTS i Sitka Hea A eee ea es 115 
cell-wall penetrated by bacteria................ 17 Giltyitel Chaxactegiatics fas. dchi. sc ees cose eels 104 
effect of chloroform on turnip white-rot organism. 82 Culture MEGIG. +P aewii tele od eres cee 124, 129, 130 
enzym from soft-rot organism.................. 78 GE ROSS'S WOIMEONS harshls oe esas le eclcn d's s 137 
solution of middle lamella..................... 76 MRSIOCRTANT GRE Goes olga whine, drive vase ace ete 133 
Potts, myxomycetes, bacteria in cultures of........ 169 entrance IntO BOSC wes ees ved aes ee owes 103 
Prazmowski, GaRERE CHS cca cde max aut paren eG ts Flee alakn IIo 
root-nodule organism, Leguminosae, fixation of fixation of atmospheric TITOCEW 35 civ bce se aes 106 
TEE MEO Ewe e lee Meas ecks Re eee’ wets 107 GAGONG 6S ogicies tau ca pire eeone sy Fate pans aeEs 135 
root-nodules. Leguminosae, Crain's Stal cc csilsv timate ts <sec ree he ems tare 127 
bacteroid formation. ....................04. 126 MrOurtle 10 NICTORER . G55 415 a. fcaas aval saletutaew 107 
SUERTE TSC aT ales SP awaete's vee 114 GL COION MIRTNOL ES coc: 5k cla, steniw aioe t 9 Reve Pntdie 103, 105 
pure-culture inoculations.................06. 124 infection, mechanics Of............cccueeegesee 119 
Predisposition to disease. ..............-0 ee eaeee 36 infection experiments.............. III, 114, 119, 135 
Premature development of organs................ 90 Aekections Mamet & oo .53< 5 5.300 ecoarcsars aelee 103, III, 119 
Prillieux, infection through root hairs................... 103 
bacterial diseases of plants, views on............ 13 SUOCIUMUONE, oh riaitclti a. « pila edit Rac he Rey melon es 97 
contributions to plant bacteriology............. 7 PRR O aac oat woe eee asda? Oe Keke Ilr 
Po Ae Rise ROSS icosace eene eee at e 193 MORIDONROR ATs ied Vit Gite kw Ra Ror Se Rab Ss 105 
Protection of plants against bacteria.............. 28 medium free from combined nitrogen........... 98 
Protective substances in plants................-. 29 qeTOSCOpic Characters. .. 0.6.60 cscs saieesecaass 113 
EMOTION So, Bie s5sis elev sense sen see deg ned 83 WASPS OR IEY sa citar tins 4 SS ea Bias days oe GIRO R eo 113 
Prucha, black-rot of crucifers................20405 332 MICLOPEN. ASSIMUSHON 5 6 <ieis a voscceiy voici Hogs 129, 132 
Pruning, ; nitrogen determinations from cultures........... 133 
distribution of disease due to.................- 190 AHutrition, CNeEct Of ss 6. ..seve re sae hos ss ge ey ELS 
APRS PS eet ese velc sing t estes veaece 191 PATASTEISIN siete 6: <, tas, tals ars igscteetels fis edig's: scare Re 132 
Pseudomonas destructans, incubation period....... 65 pure cultures, effectiveness of...............005 128 
Pseudomonas radicicola..............0.cseeeeeee 133 saprophytes...... 0... cece eee eee e eter eeees 107 
(See also root-nodule organism, Leguminosae.) Heed mMocwlAtOH ic ins ote asled.s peas v0 woeterpee (IRS 
symbiosis with Azotobacter.............--.+0++ 172 Soil inoctilations,, é..c.o0.5.<%.ee6's ai0% ose sees 99, 102, 116, 
Pseudorhizobium ramosum......... seat eeealae 99 = 120, 121, 122, 123, 130, 133 
MEIGS acts views foo ge ecsieeeee ss 209 sources of nitrogen...............eeeeeeees 106, 107 
(See cucurbit wilt.) PRAMAS oS Ais vs cies Dass Beis ON 109, 118, 127, 135 
