266 ORGANISMS RESEMBLING THE CHOLERA SPIRILLUM. 



whitish dots (Fig. 120), which rapidly increase in size to 

 form yellowish-brown masses. When liquefaction occurs, the 



FIG. 120. 



Colony of Vibrio Metschnikovi in gelatin, after thirty hours at 20 to 22 C. 

 X about 75. (Abbott.) 



colony occupies a shallow, saucer-shaped depression. The edges 

 of the colony are irregular and fringed with radiating filaments. 



FIG. 121. 



abed 



Stab culture of Vibrio Metsclmikovi in gelatin, at 18 to 20 C. : a, after twenty-four 

 hours; 6, after forty-eight hours; c, after seventy-two hours; d, after ninety-six 

 hours. (Abbott.) 



In tube cultures on agar, gelatin, and blood-serum the 

 growth closely resembles that of cholera, but it develops more 



