480 



BACTERIOLOGY. 



of which is about half that of the gelatin in the tube. 

 (Fig. 84, a.) The liquefying process spreads laterally, 

 and at the end of forty-eight hours the whole upper 

 portion of the gelatin may have become liquid. (Fig. 

 8 1, 6.) This process continues along the track of the 





I 



i\ 



stab-culture of Deneke's cheese spirUlum in gelatin, at 18° to 20° C. 



a. After twenty- four hours. &. After forty-eight hours, c. After seventy-two 



hours, d. After ninety-six hours. 



needle, and after seventy-two and ninety-six hours the 

 appearances shown in Fig. 84, o and <\, will be prodnced. 



There is nothing particularly characteristic about its 

 growth upon agar-agar. 



On potato a moist, glazed, yellowish, and, at points, 



