THE CLASSIFICATION OF BACTERIA 77 



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.) Fliigge 



M. urea-liquefaciens Fliigge : Die Mikroorganismen, 18B6. 

 Sir. atkebius Trevisan : Gen. e Spec. Batteriaceas, 1889. 



Morphology. Cocci 1.2-2.0 jU 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 Fliigge 



Die Mikroorganismen, 1886. 

 Morphology. Cocci 0.8-1 .6 /a ; 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. HjS slight. 

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

 Habitat. Air. 



