TYPHOID AND PARACOLON BACILLI 87 
Give in tabulated form the differential characters of the 
colon, intermediate, and typhoid groups of bacteria. Barter: 
Inoculate by Liborius’ method (§ 135) 2 tubes of liquid agar, 
one sugar-free, the other containing glucose, and 2 fermen- 
tation tubes, one sugar-free, the other ‘containing 1% glucose 
bouillon, from a culture of an anaérobic organism furnished. 
B. chauveaui, the cause of black leg, is a fitting organism to 
use in this study. Place the inoculated tubes in the incubator. 
