37 



190. Azotobacter vinelandii [Lipman] 



191. Micrococcus viticulosus 



192. Bacillus proteus viridis 



193. Bacillus aquatile villos 



194. Bacillus vivax 



195. Spirillum volutans 



196. Bacillus proteus vulgaris [Hauser] 



197. Bacterium xanthochlorum 



198. Bacillus xylinum 



199. Bacillus proteus Zenkeri [Hauser] 



200. Bacillus Zopfii 



201. Boden I. [Tsiklinsky-Sudpolar expedition 1903-5] 



1. Bacterium acetosum: good growth; vigorous evolution of gas on 



addition of acid; nitrate content considerably diminished; 



Strong formation of nitrite. 



2. Bacterium lactis aerogenes: good growth; vigorous evolution of gas 



on addition of acid; nitrate content greatly diminished; 



Strong formation of nitrite. 



3. Bacillus brassicae acidae: good growth; moderate evolution of gas 



on addition of acid; nitrate content considerably diminished; 



Weak formation of nitrite. 



4. Micrococcus agilis: good growth; no evolution of gas on addition 



of acid; nitrate content unchanged; 



No formation of nitrite. 



5. Bacillus acidi lactici: good growth; vigorous evolution of gas on 



addition of acid; nitrate content greatly diminished; 



Strong formation of nitrite. 



6. Micrococcus albidus: moderate growth; slight evolution of gas on 



addition of acid; nitrate content not greatly diminished; 



Weak formation of nitrite. 



7. Bacillus amylovorus: good growth; strong evolution of gas on 



addition of acid; nitrate content greatly diminished; 



Strong formation of nitrite. 



8. Bacillus anthracis: good growth; vigorous evolution of gas on ad- 



dition of acid; nitrate content greatly diminished; 



Strong formation on nitrite. 



9. Bacillus pseudo-anthracis: good growth; no evolution of gas on 



addition of acid; nitrate content unchanged; 



No formation of nitrite. 



10. Bacillus anthracoides: good growth; moderate evolution of gas on 

 addition of acid; nitrate content slightly diminished; 



Weak formation of nitrite. 



