230 



BACTERIOLOGY 



Pathogenesis. Subcutaneous inoculations of mice and rabbits cause local 



inflammation and suppuration. 

 Habitat. Isolated from a case of endocarditis. 



CLASS III. WITHOUT ENDOSPORES ; AEROBIC AND FACULTATIVE 

 ANAEROBIC; COLONIES ON GELATIN PLATES NOT AMEBOID 

 OR PROTEUS-LIKE ; GELATIN LIQUEFIED. 



I. Grow well on nutrient gelatin. 



A. Colonies on gelatin at all stages round, with no radiations from their 



edges. 

 i . Gelatin liquefied rather quickly. 



a. Gas generated in glucose bouillon. B. CLOACA GROUP. 

 Milk coagulated. 



jo. B. cloaca Jordan. 

 Milk not coagulated. 



71. B. fermentationis. 



b. No gas generated in glucose bouillon ; milk not coagulated. 

 Growth on potato smooth. 



Liquefaction of the gelatin in stab cultures crateriform-strati- 

 form. 



72. B. formosus Ravenel. 



Liquefaction of the gelatin in stab cultures funnel-formed. 



73. B. stoloniferus Pohl. 

 Growth on potato rough or folded. 



74. B. antenniformis Ravenel. 



c. Gas production in glucose bouillon not stated. 



* Potato cultures reddish, pinkish, or flesh-colored. 



v75- B. bucalis Sternberg. 

 ** Potato cultures yellowish to brownish. 



In gelatin stab cultures a funnel-formed liquefaction. 



76. B. hydrophilus Sanarelli. 



77. B. pyogenes, var. liquefadens Lanz. 



78. B. liquefadens Frankland. 



. In gelatin stab culture a crateriform liquefaction. 



79. B. Matazooni. 



*** Potato cultures whitish to grayish. 

 Milk coagulated. 



Growth and liquefaction of the gelatin more rapid than the 

 evaporation in stab cultures. 



