108 DETERMINATION OF SPECIES. 
ANTHRAX GROUP. 
; Bact. anthracis type. 
II. Spore formation not observed. 
facultative anaérobic. 
1. Do not liquefy gelatin. 
A. Do not stain by Gram’s method. 
(a) Obligate aérobic. 
ACETIC FERMENT GROUP. 
Bact. aceti type. 
(4) Aérobic and facultative anaérobic. 
1. Gas generated in glucose bouillon. 
a. Gas generated in lactose bouil- 
lon. 
BACT. AEROGENES GROUP. 
Bact. aérogenes type. 
6. Little or no gas generated in 
lactose bouillon. 
FRIEDLANDER GROUP. 
Bact. pneumonicum type. 
2. No gas generated in glucose 
bouillon. 
a. Coagulate milk. 
FOWL-CHOLERA GROUP. 
Bact. cuniculcida type. 
5. Do not coagulate milk. 
SWINE-PLAGUE GROUP. 
Bact. suicida type. 
B. Stain by Gram’s method. 
Gas generated in glucose bouillon. 
Lactic FERMENT Group. 
Bact. lacticum type. 
2. Liquefy gelatin. 
Aérobic and 
