PLATE 10. 

 Micrococcus gonorrhoeae. Neisser. Bumm. 



I. Agar streak culture, ascites-glycerin-agar, three 

 days at 37°. 



II. Agar 'plate, forty-eight hours at 37°. X 60. 

 Superficial colonies. The agar was poured out, and blood 

 from the finger-tip smeared upon it, and upon this was 

 placed the gonorrheal pus. The reddish places are blood. 

 The colonies of the gonococcus grow principally at the 

 periphery of the blood smear. 



III. Serum-agar plate. The upper colony three days, 

 the lower twenty-four hours, at 37°. X 60. Superficial 

 colonies. One c.c. of human serum was added to the agar. 



IV. Serum-agar plate. The same colonies after eight 

 days. 



V. Ascites-glycerin-agar plate, forty-eight hours at 

 37°. X 60. Superficial colonies of a pure culture from 

 blennorrheal pus. To 5 c.c. of a 2% agar, containing 5% 

 of glycerin, 1.5 c.c. of human ascites-fluid were added. 



VI. Ascites-glycerin-agar plate, forty-eight hours, at 

 37°. X 60. Superficial colonies. After pouring out the 

 agar, blennorrheal pus was smeared upon it. The darker 

 septa are pus (pushed together by the growing colonies); 

 also the material at the periphery of the colonies. 



VII. Smear preparation from gonorrheal pus. X 1000. 

 Stained with methylene-blue. 



VIII. Smear preparation from blennorrheal pus. X 1000. 

 Stained with methylene-blue. A pus cell in which lie the 

 micrococci, almost always in fours in capsules. The prep- 

 aration contains a great many micrococci thus situated. 

 IX. Smear preparation from blennorrheal pus. X 1000. 

 Stained with methylene-blue and eosin. 



X. Micrococci, highly magnified, schematic. 



