Explanation of Plate 10. 



SARCINA AURANTIACA. Fliigge. 



I. Gelatin stick culture, six days at 22. 

 II. Agar streak culture, five days at 22. The color 

 is not so red in all cases, usually it is a bright 

 orange. Likewise in the agar stick and potato 

 cultures. 



III. Agar stick culture, six days at 22. Puncture 



canal. 



IV. Agar stick culture, six days at 22. Surface. 



V. Gelatin plate, five days at 22. Natural size. 

 The gray rim around the colony indicates the 

 depression. 



VI. Gelatin plate, five days at 22. x60. A young 

 colony. The gray ring indicates the zone of 

 depression. 



VII. Agar plate, five days at 22. Natural size. 

 VIII. Agar plate, five days at 22. x 60. Upper colony 

 superficial, lower colonies deep seated. The 

 superficial colonies are usually opaque toward 

 the middle. 



IX. Potato culture eight days old. 

 X. Microscopical preparation. Pure culture of agar. 

 X 1,000. Colored with fuchsin and decolor- 

 ized with acetic acid. 



XI. Microscopical preparation. Pure culture from 

 bouillon. xl>000. Unstained. Semi-sche- 

 matic. 



10 



