Il8 BACTERIOLOGY 



2. Produce pigment on gelatin or agar. 



a. Pigment yellowish on gelatin or agar. 



* Gelatin liquefied. Class V, p. 162. 



** Gelatin not liquefied. Class VI, p. 168. 



b. Pigment reddish on gelatin or agar. Class VII, p. 173. 



c. Pigment of other colors than red or yellow. Class VIII, p. 1 79. 



3. Fluorescent bacteria. 



a. Gelatin liquefied. Class IX, p. 180. 



b. Gelatin not liquefied. Class X, p. 180. 

 B. Obligate anaerobic. Class XI, p. 183. 



II. With endospores. 



A. Non-chromogenic ; without pigment on gelatin or agar. 



1. Aerobic and facultative anaerobic. 



a. Rods not swollen at sporulation — B. subtilis type. 



* No growth at room temperatures, or below 22°-25° C. 

 Class XII, p. 184. 



** Growth at room temperatures, 20°-22° C. 

 t Gelatin liquefied. Class XIII, p. 187. 

 tt Gelatin not liquefied. Class XIV, p. 196. 



b. Rods swollen at one end at sporulation — tetanus type. 

 Class XV, p. 198. 



2. Obligate anaerobic. Class XVI, p. 198. 



CLASS I. WITHOUT ENDOSPORES. AEROBIC AND FACULTATIVE AN- 

 AEROBIC. WITHOUT PIGMENT. GROW ONLY AT BODY TEM- 

 PERATURES. 



I. Grow best on blood, or on agar moistened with blood, or on especially- 

 prepared media. 



1. Bad. influenzcE (Pfeiflfer) Lehm.-Neum. 



2. Bad. pseudoinfluenza (Kruse). 

 II. Grow well on blood-serum. 



3. Bad. acuminatum (Sternberg). 



4. Bad. Lujnnitzeri (Sternberg). 



5. Bad. conjunctivitidis . 



III. Grow only in the presence of pathological secretions, not on blood or 

 blood serum. 



6. Bad. vagince Kruse. 



IV. Cultural characters not known. 



7. Bad. cancrosi Kruse. 



