Explanation of Plate 39. 



BACILLUS ANTHRACIS. F. Cohn and E. Koch. 



(Anthrax.) 



I. Agar plate, four days at 22. x 60. On left side, 

 superficial colony; on right side, one lying 

 directly below the surface. Below, a deep- 

 seated colony. 



II. Agar plate, four days at 22. Natural size. 

 III. Agar plate, thirty -six hours at 37. x!50. Bor- 

 der of a streak culture. Superficial colony. 

 IV. Agar plate, thirty-six hours at 37. x!50. Deep- 

 seated colony. 



V. Gelatin plate, three days at 22. Natural size. 

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

 ficial colony, about to sink. 

 VII. Potato culture, six days at 22. Natural size. 



39 



