IV.] 



ARTIFICIAL COMMA-BACILLI. 



77 



days the canal of liquefied gelatine broadens, the precipitate 

 increases, and at the end of ten to fourteen days the 



FIG. 25 continued. 



(N O and P) Cultivation of choleraic comma-bacill in alkaline Agar-agar peptone 

 and meat-extract. 



growth has the form of a wide cone or a cylinder filled wit 

 liquefied gelatine ; not only is there prseent a voluminous 



