US 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, 2O-22 C. 

 f Gelatin liquefied. CLASS XIII, p. 187. 

 ft 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. Bact. influenza (Pfeiffer) Lehm.-Neum. 



2. Bact. pseudoinfluenzcs (Kruse). 

 II. Grow well on blood-serum. 



3. Bact. acuminatum (Sternberg). 



4. Bact. Lumnitzeri (Sternberg). 



5. Bact. conjunctivitidis . 



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

 blood serum. 



6. Bact. vagina Kruse. 



IV. Cultural characters not known. 



7. Bact. cancrosi Kruse. 



