NOMENCLATURE AND CLASSIFICATIONS. I/I 



We have therefore the foUowinj^ : 

 Bacterium (Cohn emend.). 



Type The one-flagellate, green -fluorescent schizomycetes, capal)le of growing 

 in Cohn's nutrient solution. To these should be added all the morphologically sim- 

 ilar, non-fluorescent and yellow species. 



SynonvDi Psciidonionas Migula. 



Among others the following plant parasites belong here ; 



luictcriiini campcstre (Panniiel), />. pruiii (Env. Sni.), 



B. hyaci)ithi Wakker, B. vasciilannn (Cobl)), 



I!. phaseoU (Erw. Sm.), B- jnglaudis (Pierce), 



B. Stcivarti {lixw. Sni.), I>. malvac€a)-inii (Krw. Sni.). 



These changes leave no generic name for the anthrax organism and other non- 

 motile forms. 



The writer would like to name the anthrax organism and related forms in 

 honor of the distinguished man who first pointed out the generic significance of 

 non-motility in this organism, but who unfortunately selected for it the preoccupied 

 name of Bacteridium. There is, however, already a genus Davainea in helminth- 

 ologv, and it does not seem wise to make another, even in botany, fiacteria are 

 now classed as plants, but we do not know what ma}- finally be done with them. 

 It remains, therefore, to adopt some old name, if an trnobjectionable one can be 

 found, and if not, to devise some entirely new name for the non-motile bacteria. 

 There are several old names not now in use, e. g., Metaladcr and Mclaiuila^ but so 

 far as I have been able to determine, none of them were given to organisms at all 

 resembling the anthrax organism, and for one reason or another all must be rejected. 



I therefore propose the waxw^ Aplanobactcr (ixoxw (ireek words meaning iviihout 

 niolion and a rod), and shall use it as the generic name for the anthrax organism 

 called Bacteridium by Davaine, Bacillus b)- Cohn and Fischer, and Bacterium by 

 Migula. Under Aplanobacter I include all non-motile forms morphologically similar 

 to the anthrax organism {Bacillus atilhracis Cohn), the latter, however, being taken 

 as the type of the genus : 



Aplanobacter nov. gen. nom. 



An unattached, non-motile, rod-shaped organism, destitute of chlorophyll and 

 multiplj'ing b)' fission, sometimes forming threads of considerable length. The type 

 of the genus, in the family Bacteriacea;, is that organism causing anthrax and most 

 commonly known in literature as Bacillus a)ithracis Cohn. 



For the present non-sporiferous forms, resembling Aplaitobacter anliiracis, are 

 also included under this genus, but if it shall be decided, later on, that the difference 

 between sporiferous and non-sporiferous forms is of generic significance, then the 

 latter may be excluded. This genus, as now understood, includes Aplanobacter 

 aniiiracis (Cohn) and many other non-motile species called Bacillus in most books, 

 but Bacteiimu by Migula. For a list of the species see Bacterium (p. 279) in Bd. 



II of Migula's "S}-stem." A few species there gi\-en are now known to be motile. 



Forms related to Bacillus tuberculosis Koch and Bacillus leprae Hansen do not 

 seem to belong with the anthrax organism, and some name must be found for these. 



