PLATE 50. 

 Vibrio cholerae. (Koch.) Buchner. (Comma Bacillus.) 



I. Gelatin plate, five days at 22. X 60. Abnormal 

 form of superficial colony. 



II. Gelatin plate, five days at 22. X 90. Abnormal 

 form of superficial colony. 



III. Gelatin plate, five days at 22. X 60. Deeply 

 sunken superficial colony with a strongly reflecting zone of 

 liquefaction. 



' IV. Gelatin plate, six days at 22. X 60. Abnormal 

 superficial colony, with dense nucleus, evenly sunken in and 

 with a zone of liquefaction. 



V. Gelatin plate, six days at 22. X 60. Abnormal 

 deep colony, without halo, dark, with radiating striations, 

 from the same plate as iv. 



VI. Potato culture, two days at 22. Natural size. 

 Soaked in soda solution before inoculation. 



VII. Potato culture, five days at 22. Inoculated upon 

 ordinary potato. 



