5?^ 



^^^^^ 



Fig. 18. a. Acctohacter rancens, F-5. A clump of two organisms with 

 lightly stained soma. Peritrichous flagella of normal curvature. 



b. A. aceti, B-1036. A single individual, rarely found on slides of this 

 genus, showing peritrichous flagellation. The flagellar curvature is normal. 



c. A. aceti, Shimwell. This strain was better flagellated than the other 

 strains studied and the organisms showed less tendency to clump. Many in- 

 dividuals showed from five to seven flagella. The flagellar arrangement is 

 typically peritrichous. 



a, b. From E. Leifson, Antonie van Leeuwenhoek, J. Microbiol. Serol. 20, 

 102-110 (1954). 



Fig. 19. a. Zymomonas anaerobia var. ponia- 

 ceae. The picture shows the typical flagellation of 

 this organism. The soma of the organism shown 

 is somewhat larger than the average. 



r 



47 



