CHAPTER XII. 



VIBRIO. 



VIBRIONES are characterised by being rod-shaped, but not 

 straight ; they are more or less wavy ; and they are motile. 



(a) Vibrio rugula consist of rods of about O'OOS to OO16 

 mm. in length, and curved either like a C or like an S. They 



FIG. 91. VIBRIO RUGULA 

 (AFTER CUHN). 



FIG. 92. VIBRIO SERPENS, 

 ISOLATED (AFTER COHN). 



are single, or form chains of two. Their protoplasm is always 

 slightly granular. They are found in putrefying organic 

 substances, and often form continuous masses, the individuals 

 interlacing in all directions. 



