64 



MORPHOLOGIC VARIATION 



S 7:30 



12:00 



12:10 



12:25 



12:^0 



12:55 



^ 



— a 



1:05 



^ 



2:35 



3:05 



3:35 



1__J \ L_J I 



10 20 30 W 50U 



Fig. 11. Morphologic Variations in a Growing Microcolony of B. 

 megatherium: Microcolony II. 



