PLATE 21. 

 Bacterium prodigiosum (Ehrenb.). Lehm. and Neum. 



I. Gelatin stab culture, one day at 22. 

 II. Agar streak culture, four days at 22. 



III. Agar stab culture, four days at 22. Stab canal. 



IV. Agar stab culture, four days at 22. Surface growth. 

 V. Agar plate, from two to four days at 22. Natural 



size. . Colonies with and without color. 



VI. Agar plate, eight days at 22. X 60. Superficial 

 colony reddish, deep one yellowish. 



VII. Gelatin plate, two days at 22. X 60. Superficial 

 colony just beginning to sink in. 



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



IX. Potato culture, eight days at 22. Typical with 

 metallic luster on the surface. 



X. Potato culture, eight days at 22. Atypical white 

 growth. 



XI. Microscopic preparation. Pure culture from agar. 

 X 800. Stained with fuchsin. 



XII. Bacteria with several flagella. X 1000. Stained 

 according to Loffler. 



XII. 



