Explanation of Plate 1. 



MICROCOCCUS PYOGEXES a AUREus. Bosenbach, Leh- 



mann and Neumann. 

 (Staphylococcus aureus Eos.) 



I. Gelatin stick culture, six days at 22. 

 II. Agar streak culture, five days at 22. 



III. Agar stick culture, five days at 22. Stick canal. 



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

 V. Agar plate culture (natural size), six days at 22. 



Superficial and deep colonies. 

 VI. Agar plate, six days at 22. x60. Superficial 



small colony. 

 VII. Gelatin plate (natural size), four days at 22. 



Superficial and deep colonies. 

 VIII. Gelatin plate, four days at 22. x 60. Superficial 



and deep colonies. 



IX. Potato culture, six days at 22. 

 X. Microscopical preparation ( X 1 ? 000) of agar cul- 



ture, two days at 22. 

 XI. Microscopical preparation; individual cocci, be- 



fore and after division. x 1,500. 



XX. 



