Explanation of Plate 50. 



VIBRIO CHOLERA. (Koch) Buchner. 

 (Comma bacillus.) 



I. Agar plate, thirty-six hours at 22. x60. Left 



side, superficial; right side, deep colony. 

 II. Agar plate, two days at 22. x60. Left side, 

 superficial ; right side, deep colony. 



III. Agar plate, three days at 22. x60. Left side, 



superficial; right side, deep colony. 



IV. Agar plate, three weeks at 22. x 60. Left side, 



superficial ; right side, deep colony. 

 V. Agar plate, five days at 22 (x 60), from a case 

 of Asiatic cholera in Hanover. Superficial and 

 deep colony. 

 VI. Gelatin plate, four days at 22. Natural size. 



Much depressed liquefaction funnel. 

 VII. Gelatin plate, fourteen days at 22. Natural 

 size. Colony with pronounced zonal develop- 

 ment. 

 VIII. Gelatin plate, four days at 22. Shallow zones 



of liquefaction. 



IX. Gelatin plate, six days at 22. Shallow sunken 

 colonies with concentric zones of liquefaction. 



50 



