Explanation of Plate 36. 



BACILLUS SUBTILIS. F. Cohn. 

 (Hay bacillus.) 



I. Gelatin stick culture, thirty-six hours at 22. 



II. Gelatin stick culture, eight days at 22. 



III. Agar streak culture, two days at 37. 



IV. Agar stick culture, two days at 37. Puncture 



canal. 



V. Agar stick culture, two days at 37. Surface. 

 VI. Agar plate, twelve hours at 37. x60. Super- 

 ficial colony. 



VII. Agar plate, twelve hours at 37, x 60. Deep- 

 seated colony. 

 VIII. Agar plate, twelve hours at 37. Natural size. 



36 



