SYSTEMATIC AND DESCRIPTIVE. 



317 



Genus V. Vibrio. 

 SPECIES. 



UNASSOCIATED WITH DISEASE : 



Vibrio rugula .... Zymogenic saprophyte. 



Vibrio rugula, Miiller. Rods and threads, 

 6 16 JJL long, about -5 2-5 thick. The rods are 

 either simply bowed, or possessed of one shallow 

 spiral (Fig. 123). They bear a flagellum at each 



FIG. 123. VIBRIO RUGULA, x 1020. A. Bowed threads. B. Slightly-curved 



rods. C. Rods swollen preparatory to spore-formation. D. Rods swollen 



at the spore-forming end. E. Various stages of the developing spores. 

 [After Prazmowski.] 



end. The rods form swarms when causing -de- 

 composition, and then, or after, grow out into 

 threads, curved in a screw-like manner. In the 

 next stage of development the rods cease to move, 

 and become swollen with granular contents. One 



