THE CLASSIFICATION OF BACTERIA 7? 



^_^J 8. M. polymyositis Martinotti 



Centralblatt f. Bakteriologie, XXIII, 1898, 877. 



Morphology. Cocci solitary, in pairs and groups. Stain by Gram's method. 



Gelatin colonies. In 36 hours white points, becoming in 3 days sunken in 

 the liquefied gelatin. 



Agar colonies. In 24 hours, at 37 C. Deep colonies : convex, grayish white, 

 with sharp thin edges. 



Agar slant. Growth thick, grayish white, becoming spreading. 



Gelatin stab. In depth a white stripe. On the surface growth quite spread- 

 ing. In three days liquefaction begins on the surface, becoming infundi- 

 buliform. Gelatin turbid, with a white sediment. 



Bouillon. In 24 hours, at 37 C., turbid. 



Potato. Growth white-gray, becoming deeper-colored. 



Milk. Coagulated. 



Litmus milk. Reddened. 



Pathogenesis . Rabbits inoculated subcutaneously show oedema, redness, and a 

 gangrenous condition. Animals become greatly emaciated, but generally 

 recover. Guinea pigs immune. 



Habitat. Isolated from an abscess in kidneys in a case of polymyositis acuta. 



9. M. aethebius (Trev.) Fltigge 



M. urecE-liquefaciens Fliigge : Die Mikroorganismen, 1886. 

 Sir. cethebius Trevisan : Gen. e Spec. Batteriaceae, 1889. 



Morphology. Cocci i.2-2.o/x occur singly and in chains of 3-10 elements, or 



in irregular groups. 

 Gelatin colonies. In 2 days small white points ; microscopically, round, dark 



gray, entire, becoming yellowish brown granular with an undulate border. 

 Gelatin stab. Growth along needle track beaded, becoming a liquefied funnel. 

 Habitat. Air. 



10. M. coronatus Fltigge 



Die Mikroorganismen, 1886. 



Morphology. Cocci 0.8-1.6 /x; in chains and clumps. 



Gelatin colonies. White ; microscopically, gray, coarsely granular, with lacerate- 



fimbriate borders, becoming liquefied funnels. 

 Agar slant and potato. Growth gray-white, rather dry, spreading. 

 Bouillon. Feeble growth, turbid. Indol negative. H 2 S slight. 

 Milk. In 10 days gelatinous, in 14 days curdled and acid. 

 Habitat. Air. 



