PLATE 40. 



Bacillus subtilis (Ehrenberg). F. Cohn. 

 (Hay Bacillus.) 



I. Potato culture, seven days at 22. 

 II. Gelatin plate, two days at 22. X 60. Above and 

 to the left, a deep colony ; below this, one lying directly at 

 the surface ; to the right, a superficial colony. 



III. Gelatin plate, two days at 22. Natural size. 



IV. Gelatin plate, two days &t 22. X 10. 



V. Microscopic preparation. X 1000. From an agar 

 culture three hours old at 37, stained with fuchsin. 



VI. Microscopic preparation. Bacilli with flagella, 

 after Fischer. Very highly magnified. 



VII. Microscopic preparation. X 1000. From an agar 

 culture, ten days at 22. Contains spores. Unstained. 



VIII. Microscopic preparation. X 700. From an agar 

 culture, ten days at 22. Double stain with carbol-fuchsin 

 and methylene-blue. 



IX. Bacilli with numerous flagella. X 1000. Stained 

 according to Loffler. 



IX. 



