116 ESSENTIALS OP BACTERIOLOGY. 



the gonococci in form, they are, however, easily cultivated, and 

 form yellow colonies which dissolve the gelatine and grow rap- 

 idly; the surface of the gelatine is at first moist and shiny, but 

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

 cial pathological action. Found in the air and gonorrhoeal pus. 



Diplococcus Albicans Ampins. (Bumm. ) In vaginal secretion. 

 The diplococci are much larger than the gonococci, but similar 

 in form. They are also cultivated upon gelatine plates, grayish- 

 white colonies, which slowly liquefy gelatine. They grow mode- 

 rately 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 gelatine. Growth, very slow at ordi- 

 nary temperature, but more rapid at brood-heat. The colonies 

 are 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. 



Pathogenesis. None known. 



Micrococcus Subflavus. (Bumm.) 



Origin. In lochial discharges, in vagina and urethra of 

 healthy persons. 



Form. As gonococci. 



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

 brownish pigment. 



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

 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 gonOGOCCUS is distinguished from all these similar micro- 

 cocci by being found usually within the cell protoplasm. 



