406 BA OTEJRIOL OGY. 



days at 37° C.,with coincident coagulation of the casein 

 and the formation of a layer of clear whey about it. 



It causes the red color of rosolic-acid-peptone solution 

 to become somewhat intensified after four or five hours 

 at 37° C. 



Of twenty-one animals treated with this organism by 

 Koch's method of inoculation only four died. 



VIBRIO METCHNIKOVI. 



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 



Fig. 84. 





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 with which the chickens had been suffering. 



In morphology it is seen 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 



