Explanation of Plate 51. 



VIBBIO CHOLERA. (Koch) Buchner. 

 (Comma bacillus.) 



I. Gelatin plate, thirty-six hours at 22. x60. Su- 

 perficial and deep colonies. 



II. Gelatin plate, forty-eight hours at 22. x60. 

 Left side, superficial ; right side, deep colonies. 



III. Gelatin plate, three days at 22. x60. Super- 



ficial colonies with zones of liquefaction. 



IV. Gelatin plate, three days at 22. x60. Deep 



colony. 



V. Gelatin plate, four days at 22. x60. Super- 

 ficial colony with zone of liquefaction. 

 VI. Gelatin plate, four days at 22. x60. Deep 



colony. 



VII. Gelatin plate, five days at 22. x60. Deep col- 

 ony from a culture from a case in Hanover. 

 VIII. Gelatin plate, five days at 22. x60. Superficial 

 colony. Has undergone complete liquefaction. 

 IX. Gelatin plate, eight days at 22. x60. Super- 

 ficial colony with zone of liquefaction. 



51 



