VIBRIO METCHNIKOVL 485 



Of twenty-one animals treated witli this organism by 

 Koch's method of inoculation only four died. 



VIBRIO METCHNIKOVL 



The spirillum that simulates very closely the comma 

 bacillus of cholera in its morphological and cultural 

 peculiarities, but which is still easily distinguished from 

 it, is that described by Gamaleia ^ under the name of 



rr c-/, >r;/, j; 



Vibrio Metchnikovi from agar-agar culture, twenty-four hours old. 



vibrio Metchnikovi. It was found post mortem in a num- 

 ber of fowls that had died in the poultry-market of 

 Odessa, and the experiments of the discoverer led him 

 to believe that it was related etiologically to the gastro- 

 enteritis from which the chickens had been suffering. 



Morphologically it appears as short, curved rods and as 

 longer, spiral-like filaments. It is usually thicker than 

 Koch's spirillum and is at times much longer, while 

 again it is seen to be shorter. It is usually more dis- 

 tinctly curved than the " comma bacillus." (Fig. 88.) 



It is supplied with a single flagellum at one of its 

 extremities, and is therefore motile. 



It does not form spores. 



It is aerobic. 



Its growth upon gelatin plates is usually character- 



1 Annales de I'lnstitut Pasteur, 1888, tome ii., pp. 482, 552. 



