Explanation of Plate 31. 



BACTERIUM ZOPFII. Kurth. 



I. Gelatin plate, eight days at 22. x90. Border 



of a colony. 



II. Microscopical preparation. x 1,000. Pure cul- 

 ture from agar plate. Stained with fuchsin. 



III. Agar plate, twenty-four hours at 37. x60. 



Superficial colony surrounded by innumerable 

 bacteria which have wandered away. 



IV. Agar plate, twenty-four hours at 37. Natural 



size. 

 V. Agar plate, twelve hours at 37. Deep-seated 



and superficial colony. 



VI. Agar plate, four days at 22. Deep-seated colony. 

 VII. Gelatin plate, eight days at 22. Sausage-shaped 



forms of a deep-seated colony. 



VII. Bacteria with numerous flagella. x 1,000. Loff- 

 ler's stain. 



31 



