VIBRIO METCHNIKOVI. 371 



In milk containing blue litmus tincture it causes 

 almost complete decolorization in from three to four 

 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- pep tone 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. 77. 



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



vibrio Metchnikovi. It was found post-mortem in a 

 number of fowls that had died in the poultry market of 

 Odessa, and the experiments of the discoverer demon- 

 strate that it is related etiologically to the gastro-enter- 

 itis with which the chickens had been suffering. 



In morphology it is seen as short, curved rods and as 



