PLATE 53. 



Vibrio danubicus Heider, Vibrio berolinensis Rubner, 

 Vibrio aquatilis Giinther. 



I. Vibrio danubicus: Gelatin stab culture, three days 

 at 22°. 



II. Vibrio aquatilis: Gelatin stab culture, three days at 

 22°. 



III. Vibrio danubicus: Gelatin plate, three days at 22°. 

 X 60. To the right superficial, to the left deep colony. 



IV. Vibrio danubicus: Microscopic preparation. Pure 

 culture on agar, twenty-four hours. Stained with fuchsin. 

 X 800. 



V. Vibrio berolinensis: Gelatin plate, three days at 

 22°. X 60. To the right superficial, to the left deep colony. 



VI. Vibrio berolinensis: Microscopic preparation. 

 Pure culture from agar, twenty-four hours. X 800. 

 Stained with fuchsin. 



VII. Vibrio aquatilis: Gelatin plate, three days at 22°. 

 X 60. Deep colonies, swarming outward from one point 

 forming secondary ones. 



VIII. Vibrio aquatilis: Microscopic preparation. Pure 

 culture on agar, twenty-four hours at 22°. X 800. Stained 

 with fuchsin. 



IX. Vibrio aquatilis: Gelatin plate, three days at 22°. 

 X 60. To the right superficial, to the left deep colony. 



