Explanation of Plate 4. 



MICROCOCCUS ROSEUS. (Bumm) Lehmann and Neumann. 



I. Gelatin stick culture, twenty days at temperature 



of room. 



II. Agar streak culture, thirty days at temperature of 

 room. The white reflex on the right side is 

 not always so pronounced. 



III. Agar stick culture, ten days 22. Puncture canal. 



IV. Agar stick culture, ten days 22. Surface. 



V. Agar plate, twelve days at 22. x50. Above, a 



superficial, below, a deep-seated colony. 

 VI. Agar plate. More delicate structure. Fourteen 

 days at 22. x 50. Above, a superficial colony, 

 below, deep-seated colonies. 

 VII. Gelatin plate, eight days at 22. x50. Superficial 



and deep colonies. 

 VIII. Microscopical preparation from agar culture (x 



1,000), three days. The cocci are dividing. 

 IX. Potato culture of diplococcus roseus placed on an 

 anthrax culture, ten days at temperature of 

 room. 



X. Potato culture, twenty days at temperature of 

 room. 



