PATHOGENIC BACTERIA 169 



later on wrinkled. Colored with Gram's method, and have no 

 special pathologic action. Found in the air and gonorrheal pus. 



Diplococcus Albicans Amplus (Bumm). In vaginal 

 secretion. The diplococci are much larger than the gonococci, 

 but similar in form. They are also cultivated upon gelatin 

 plates grayish-white colonies, which slowly liquefy gelatin. 

 They grow moderately rapid. Stained with Gram's method, 

 and have no pathogenic action. 



Diplococcus Albicans Tardissimus (Bumm). Origin. 

 In urethral pus. Form, like gonococci. Properties, immotile; 

 do not liquefy gelatin. Growth, very slow at ordinary tem- 

 perature, but more rapid at brood-heat. The colonies show 

 small white points, which under low power appear brown 

 and opaque. 



Agar Stroke-culture. Grayish-white growth, which after 

 two months is like a skin upon the surface. 



Staining. Takes Gram's method. 



Patho genesis. None known. 



Micrococcus Subflavus (Bumm). Origin. In lochial 

 discharges, in vagina and urethra of healthy persons. 



Form. As gonococci. 



Properties. Not motile; liquefy gelatin slowly; a yellow- 

 brownish pigment. 



Growth. Grows slowly on all media, forming on gelatin, 

 after two weeks, a moist yellowish surface growth. 



Potato. Small half-moon-shaped colonies which, after three 

 weeks, become light brown in color, and covering the surface as 

 a skin. 



Staining. Colored with Gram. 



Pathogenesis. Not acting upon the mucous membrane, but 

 when injected in cellular connective tissue, an abscess results 

 which contains myriads of diplococci. 



The gonococcus is distinguished from all these similar micro- 

 cocci by 



First. Being found usually within the cell protoplasm. 



Second. Not stained with Gram's method. 



Third. Refusing to grow readily upon gelatin. 



