CONTENTS 
15 
CHAPTER XX 
PAGE 
The Diphtheria Group.. 
Historical, 168; Morphology, 168; Cultural Characteris¬ 
tics, 168; Resistance, 168; Disease Production, Mode of 
Infection and Prophylaxis, 169; Mechanism of Infection 
and Immunity, 170; Bacteriologic Diagnosis, 171; Immu¬ 
nity Treatment, 171; Summary of Important Character¬ 
istics, 172. 
CHAPTER XXI 
The Tuberculosis Group.173 
Historical, 173; Morphology, 173; Cultural Characteris¬ 
tics, 173; Destruction, 174; Disease Production, Mode of 
Infection, Disinfection and Prophylaxis, 174; Mechanism 
of Infection and Immunity, 175; Bacteriologic Diagno¬ 
sis, 175; Immune Treatment, 175; Summary of Impor¬ 
tant Characteristics, 176. 
CHAPTER XXII 
The Bacillus of Leprosy. The Smegma Bacillus . . . 177 
The Bacillus of Leprosy, 177; Smegma Bacillus, 178. 
CHAPTER XXIII 
The Influenza Group. The Bacillus Pertussis. Bacillus 
Pestis. The Cholera Group. The Bacillus of 
Ducrey .179 
The Influenza Group, 179; The Bacillus Pertussis, 180; 
Bacillus Pestis, 180; The Cholera Group, 182; The Bacil¬ 
lus Ducrey, 183. 
CHAPTER XXIV 
The Spirochetal Diseases.184 
Syphilis, 184; Relapsing Fever, 189; Vincent 's Angina, 
189; Yaws, or Frambesia, 189. 
