84 



MORPHOLOGIC VARIATION 



2 4 6 

 Hours, 



Parent 

 Culture. 



2 H S 

 Hours, 



Two hour 

 Subculture. 



Four hour 

 Subculture. 



Six hour 

 Subculture, 



Hours. 



Eight hour 

 Subculture 



Fig. 23. Influence of Age of Parent Culture on Size of Cells, 

 B. megatherium. 



