106 



MORPHOLOGIC VARIATION 



described the minimum coefficient of variation corresponds nearly 

 with the maximum rate of cell division. 



6br5. 



Ohr. 



[K \A2 



15 hrs. 



\l hv5. 16 br5. 



15 br5. 



Abscissae, 1 unit =; 2^. 



48 br^. 

 Ordinates, 1 unit = 5%. 



Fig. 29. Frequency Distributions of Cells According to Length at 

 Different Stages of Growth, Diphtheroid Organism. 



It has long been known that the metachromatic granules or 

 volutin of microorganisms tends to disappear during active growth, 

 and to reappear again after growth has ceased; in fact the generally 

 accepted view that these granules represent some sort of reserve 



