CLASSIFICATION BY GROUPS. 109 
GLANDERS GROUP. 
Bact. mallei type. 
3. Do not grow well on gelatin at room-tem- 
perature. 
A. Stain with basic aniline dyes, but are 
easily decolorized by mineral acids when 
stained with carbol-fuchsin. 
(a) Grow well in bouillon at body-temper- 
ature and stain by Gram’s method. 
DIPHTHERIA GROUP. 
Bact. diphtheriz type. 
(4) Do not grow in bouillon or on ordinary 
media. 
1. Rods slender. 
a. Stain by Gram’s method. 
LEPROSY GROUP. 
Bact. lepree type. 
5. Do not stain by Gram’s method. 
INFLUENZA GROUP. 
. .Bact. influenzze type. 
2. Rods variable. 
ROOT-TUBERCLE GROUP. 
B. Do not stain with aqueous solutions of 
basic anilins and are not easily 
decolorized by acids. 
TUBERCLE GROUP. 
Bact. tuberculosis type. 
BACILLUS. 
I. Spore formers. 
1. Aérobic and facultative anaérobic. Rods not 
swollen at sporulation. 
