*. fi j^. 



d» 





Fig. 45. a. Serratia marcescens, NCIB 3202. Typical coiled peritrichous 

 flagella with one flagellum curly in its proximal part, ending in a coil. 



b. S. anolium, NRRL B-1700. Typical coiled peritrichous flagella. 



c, d. S.indica, NCIB 4002. This culture was a mixture of organisms with 

 the coiled flagella typical of the genus, illustrated in c, and normal flagella, 

 illustrated in d. By plating, a pure culture with normal flagella was obtained. 



e. S. plymuthica, ATCG 183. A short filament with the typical coiled peri- 

 trichous flagella. 



f. S. kiliensis, ATCC 992. A short filament with typical coiled peritrichous 

 flagella. 



g. S. marcescens, NCIB 2302. The filamentous form of this organism with 

 typical coiled peritrichous flagella. 



a-g. From M. Fulton, C. Forney, and E. Leifson, Can. J. Microbiol. 5, 

 269-275 (1959). 



107 



