102 THE BACTERIA IN ASIATIC CHOLERA. [CH. 



ought to have done, that they are not the discoverers of 

 these comma-bacilli in the intestine of normal guinea-pigs. 



I have repeatedly tried to grow these normal comma- 

 bacilli in 10 per cent, alkaline nutritive gelatine in 

 plate-cultivations, but have not succeeded : there was not 



FIG. 34 and 35. SAME NON-LIQUEFYING COMMA-BACILLI GROWING IN ic 

 PER CENT. NUTRITIVE GELATINE; SEVERAL WEEKS OLD. 



FIG. 34. On the surface. 



FIG. 35. After inoculation by stabbing. 



even an attempt at growth, only straight bacilli and 

 micrococci were thus obtained from the intestinal contents. 

 Of comma-bacilli or spirilla forms, shown in Fig. 31, there 

 was never any trace. Mr. Watson Cheyne, in his 



