148 THE CYTOLOGY AND LIFE-HISTORY OF BACTERIA 



r 



# 



? 





A 





iM '^^' 



15 ■ . . 



.■^ %■ 



^*« 



» ■{-* 



K: «* 



- W^'^ • 



a 



^ V 



.6 





i •^'^^ 



[Ecproduied from Experimental Cell Research) 



Fig. 



