PLATE 38. 

 Bacillus mycoides. Fliigge. (Root Bacillus.) 



I. Agar plate, one day at 22. X 20. Superficial and 

 deep colony. 



II. Potato culture, seven days at 22. Natural size. 



III. Microscopic preparation. Pure culture, twenty- 

 four hours old, on agar. X 1000. Stained with fuchsin. 

 A few bacilli contain spores. 



IV. Agar plate, one day at 22. X 100. Part of a 

 superficial colony. 



Bacillus butyricus. Hiippe. (Butyric Acid Bacillus.) 



V. Potato culture, three days at 22. 

 VI. Gelatin plate, one day at 22. X 60. Above, su- 

 perficial ; below, deep colonies. 



VII. Gelatin plate, thirty-six hours at 22. X 60. 

 Part of a superficial colony. 



VII A. Flagella preparation. X 1000. Stained accord- 

 ing to Loffler. 



VII A. 



Bacillus vulgatus. Migula. (B. mesentericus vulgatus 

 Fliigge. Potato Bacillus.) 



VIII. Potato culture, five days at 22. 



IX. Potato culture, five days at 22. Natural size. 

 Both forms of growth occur. 



