NATURAL BACTERIAL SYSTEM 271 



Mycoderma, since — apart from the circumstance that this name 

 does not fit in with my nomenclature — it is aheady generally 

 used as a generic name of certain pellicle-forming yeasts. More- 

 over, the designation Mycoderma {Mycoderma vini and Myco- 

 derma aceti) dates from a far more ancient time than that cited 

 by the Committee. 



Although the property of setting free nitrogen from nitrates 

 and nitrites is not of so general occurrence among the bacteria 

 as is the property of reducing nitrate to nitrite or ammonia, we 

 meet with the property of denitrification in different bacterial 

 genera, and hence it would be unwarrantable to maintain the 

 genera Denitromonas and Denitrohacterium, set up by me. As 

 the property of hquefying gelatin also cannot be adopted as a 

 generic character but only as a species character, I think it 

 would be best to group together my earher genera Denitromonas 

 and Liquidomonas in a single genus, which can be conveniently 

 termed Fluormonas, as the bacteria of this group are ordinarily 

 fluorescent. I cannot agree to call this genus Pseudomonas 

 merely out of regard for so-called priority, as each and all of the 

 bacteria which belong to the order under consideration are 

 really Pseudomonades as well. 



As the phosphorescent bacteria form, biologically, a connected 

 whole, I deem it correct to unite them so as to form one genus, 

 for which a better name than Photomonas can hardly be found. 



According to the experience we have acquired in regard to the 

 nitrate-reducing bacteria there will scarcely be any reason to 

 create a special genus for sulphate-reducing bacteria; but we 

 naturally include the vibrios belonging here in the genus Spiro- 

 monas. The reason why I prefer this designation over the 

 generic name Spirillum, has been mentioned above. 



As for the second order of bacteria, I provisionally follow the 

 proposition of the Committee with the differences justified by 

 my researches on the lactic acid bacteria. I have no doubt that 

 the genera marked with an asterisk (*), when studied more 

 closely, will dissolve into two or more genera, some of which will 

 cover some of those proposed in my natural bacterial system. 



