145 



zygosaccharomyces 



Viola sylvestris, I. 372. 



- tricolor arvensis, I. 60. 



violacens (Bacillus], II. 333; IV. 197; 



V. 33, 218, 243-246. 

 virescens (Bacillus], II. 333. 

 viridis (Bacillus], IV. 39, 197. 

 viridis (CJiermes), I. 2, 3, 14. 

 viscosus (Aerobacter), (Bacillus viscosus), 



IV. 31, 32; V. 82, 103, 109, 218, 219, 

 256, 269. 



viscosus (Bacillus], V. 103, 109,218,219, 

 see also: Aerobacter viscosus. 



Viscum album, I. 16, 375. 

 vitellinae (Aphis], I. 36. 



Vitis Berlandieri, III. 162. 



- Labrusca, II. 139. 



- Riparia, III. 162. 



- vinifera, I. 2, 35, 36, 42, 56. 

 Fz'/z's (Phytoptus), I. 33. 

 Vollenhovii (Nematus], I. 66. 

 Volvella coronillae Am., I. 40. 

 Fofeo* globator, I. 17; II. 228, 294. 

 Volvulifex Pruni Am., I. 26, 42. 



- rodizans Am., I. 42. 



vulgare (Bacterium], III. 248, sec also: 

 Proteus vulgaris. 



vulgare (Ceratoneon], I. 42. 



vulgaris (Bacillus), III. 32, 33. 



vulgaris (Proteus), (Bacillus proteus, Bac- 

 terium vulgare], II. 339; III. 32,248; 



V. 3, 218. 



vulgaris (Synergus], I. 138; III. 204. 

 vulpinus (Bacillus], IV. 352, 354. 



W 



Warmingii (Chromatium), III. 39. 

 Weberiana (Gvapholitha], V. 172. 

 Weigelia rosea, I. 325. 



Widdringtonia, II. 285. 

 Woeberiana (Carpocapsa), I. 58. 

 Woodvuardia radicans, I. 102. 



Xanthorea parietina (Parmelia parietina, 

 Physcia parietina), I. 1 1 ; II. 315-319, 

 320*; III. 21-24; IV. 118; V. 41, 288. 



Xenophanes Potentillae, I. 24, 71. 



Xovides nitens, I. 267. 



xylinum (Acetobacter), V. 236, 237, see 

 also: Bacterium xylinum. 



xylinum (Bacterium), (Acetobacter xyli- 

 num), III. 273-278; V. 90, 236, 237. 



Xyloma ferruginea Schulz., I. 41. 



Xylostei (Aphis), I. 32, 38. 



Xylostei (Selandria), I. 66. 



Yucca, I. 90*, 93, 94. 



- filamentosa, I. 93. 



- gloriosa, I. 93. 



Zea mays, I. 310, 311; II. 290. 

 Zingiberaceae, III. 152. 

 Zoochlorella, II. 276, 293, 304-312. 



- conducti'ix Brandt, II. 276, 311, 320*. 



- parasitica Brandt, II. 276, 311. 

 Zoplii (Bacterium), III. 33, 42*, 244, 245 



IV. 31, 92; V. 275. 

 Zosteni, V. 201. 



- nana, I. 13. 

 zygosacoharomyc.es (Saccharomyces), IV. 



330, 331; V. 62. 



M. W. Beijerinck, Verzamelde Geschriften; Zesde Deel. 



10 



