3 68 



INDEX. 



Page. 

 Ward, H. Marshall continued. 



ginger-beer plant 162 



parasitism of bacteria in plants, views on. ...... . 37 



root-nodules, Leguminosae, absent in sterilized 



soil 104 



root-nodules, Leguminosae, infection through root- 

 hairs 103 



Water, excess of, favorable to disease 189 



Water-pore infection 39. 56 



Stewart's sweet-corn disease 60 



Weevils, insecticide for 202 



Wehmer, bacterial diseases of plants, views on. ... 16, 39 



Weiss, bacterial diseases of plants, views on 17 



Wiesner, resistance of roots to decay 30 



Wheat kernels, bacterial disease, Prillieux's work ... 7 



Wilfarth, root-nodules, Leguminosae 99, 100, 104 



root-nodules, activity 117 



Windisch, germicidal treatment of seeds 200 



Winkler, root-nodules, Leguminosae, bacterioplasts . 124 

 Wollney, root-nodules, Leguminosae, soil-inocula- 

 tions 121 



Wood, 



bacteria in 70 



destruction of 76 



Woodbury, cucurbit- wilt, dissemination by insects. . 298 

 Woods. 



Bordeaux mixture, effect on grape vines 201 



Bordeaux mixture, effect on potatoes 201 



species named for 62 



Woronine. root-nodules, Leguminosae 9, 100 



Wound infections 5 1 



Wounds, source of infection 190 



Wurtz, contamination of vegetables by sewage 185 



Yeasts, symbiosis with bacteria 155 



Yellow disease of hyacinths 335 



(See also Bacterium hyacinthi.) 



bulb infection 335. 352 



cavities 336, 343 



Page. 



Yellow disease of hyacinths continued. 



cell-walls, action on 343, 350 



conditions favoring 337 



duration of disease 336 



eradication 191, 351 



etiology 336 



geographical distribution 335 



history 352 



incubation period 66, 337 



infection, natural means of 55, 337, 352 



infection, time of 342 



intercellular spaces, occupation of 343 



leaf-infection 335 



literature 353 



middle lamella, solution of 343,350 



morbid anatomy 342 



parasite, description of 344 



pecuniary losses 352 



pockets formed 336 



progress of disease 335 , 336, 342 , 343 , 350, 35 1 



resistant varieties 337, 352 



signs of the disease 335 



solution of middle lamella 343, 350 



tissues attacked 335, 342 



treatment 191, 351 



varietal resistance 337, 352 



vessels, occlusion of 343 



Yellow slime of hyacinths, 



(See yellow disease of hyacinths.) 



Zederbauer, Myoxbaeteriaceae 168 



Zimmerman, tubercular disease of leaves of rubiace- 



ous plants, Java 63 



Zinsser, 



animal parasites, plant-inoculations with 178 



root-nodule organism, Leguminosae 1 1 1 



root-nodules, Leguminosae, cross-inoculations. ... 115 

 saprophytes, plants inoculated with 178 



Zopf, bacterial diseases of plants, views on n 



