CELLS OF BACILLUS MEGATHERIUM 



79 



approximately the period of maximum growth rate, there is some 

 tendency to bimodality. The same things were observed in Cultures 

 IV, V, and \T; with the decreasing sizes of seeding, that is with 



I I I I M I I I I IJ M I I I I I I I I I ' I I I I 1 I ' I I I I I i_ 



I I I I 



D hrs. 

 I I M I I I I I I I I I I I I 



10 hrs. 

 I I I I I I I I ' I 



k hrs. 12 hrs. 



Abscissae: 1 unit^lM- Ordinates: 1 unit=2% 



Fig. 20. Frequency Distributions of Cells According to Length at 

 Different Stages of Growth, B. megatherium: Culture III. 



increasing growth rates, there was greater change in the form of the 

 distribution curves, and only in the last of these three was there any 

 evidence of bimodality in the curves. 



From these quantitative studies in mass cultures, the same con- 



