SAPROPHYTIC MICROCOCCI. 229 



which have the tendency to unite in fours, and which 

 very much resemble the micrococcus of gonorrhoea. 

 The average size is 1*5 /*. Forms citron yellow 

 colonies on gelatine, which extend over the gelatine like 

 a tongue, and are raised like a wall at the margins ; the 

 surface is at first moist and slimy, later cracked and 

 scaly. Inoculation on animals produces no effect. 



Micrococcus lacteus faviformis. 



Frequently found by Bumm and Bockhari in the 

 vaginal secretion, also in the secretion from the cervix, 

 in sputum, &c. In these materials it usually forms 

 isolated diplococci ; preparations from cultivations, on 

 the other hand, present a peculiar honeycomb appearance 

 (hence the term faviformis), the individual diplococci 

 lying side by side with their long diameter in the same 

 direction. Each diplococcus measures on an average 

 1'25 p. and consists of two hemispheres which are 

 separated by a fissure ; the latter is narrower than in 

 the gonococcus, but otherwise there is a great morpho- 

 logical similarity between the two cocci. It grows 

 readily on the most various soils at the ordinary 

 temperature, and forms small points in the stroke 

 inoculation, which gradually develop to milk white con- 

 fluent colonies. Not infective. 



Micrococcus albicans ampins. 



Found at times by Bumm in vaginal secretion. Diplococci, 

 which are similar in form to the gonococcus, but are dis- 

 tinctly larger. "Before division the hemispheres may attain 

 the size of 2'28 /*. Grows on nutrient jelly at the tempera- 

 ture of the room in the form of greyish-white lines. 



Micrococcus roscus. 



Obtained accidentally on nutritive substrata from the 

 dust of the air (Bumm). Diplococci like the gonococcus, but 

 with a broader division between the hemispheres ; size=l 

 1*5 /*. Grows luxuriantly on nutrient jelly at the ordinary 



