> 



Fig. 36. a. Arthrohacter citreus, Sacks. This figure shows the most com- 

 mon flagellation of the culture studied. The flagella were straight or with a 

 slight curvature (small amplitude), and usually single. The arrangement was 

 peritrichous. 



b. A. citreus, Sacks. This was the only organism seen on the slide with a 

 normal flagellum. 



87 



