CONTENTS IX 



CHAPTER XXIII. 



Bacterium (Syn. BaciUus) Diphtherise — Its Isolation and Cultiva- 

 tion — Morphological and Cultural Peculiarities — Pathogenic 

 Properties — ^Variations in Virulence — Bacterium Pseudodiph- 

 theriticum — Bacterium Xerosis — Diphtheria Antitoxin . 454 



CHAPTER XXIV. 



Typhoid Fever — Study of the Organism Concerned in its Produc- 

 tion — Its Morphological, Cultural, and Pathogenic Properties 

 —Bacillus Coli — Bacillus Paratyphosus — Its Resemblance to 

 Bacillus Typhosus ... . 481 



CHAPTER XXV. 



The Group of Bacilli Found in Cases of Epidemic, Endemic, and 

 Sporadic Dysentery — The Morphological, Biological, and 

 Pathogenic Characters of the Several Members of the Group 

 — The Differentiation of the Different Types of Bacilli . . 514 



CHAPTER XXVI. 



The Spirillum (Comma Bacillus) of Asiatic Cholera — Its Mor- 

 phological and Cultural Peculiarities — Pathogenic Properties 

 — The Bacteriological Diagnosis of Asiatic Cholera — Micro- 

 spira Metchnikovi — Miorospira ("Vibrio") SchuylkiUiensis 

 — Its Morphological, Cultural, and Pathogenic Characters 522 



CHAPTER XXVII. 



Study of Bacterium Anthracis, and of the Effects Produced by Its 

 Inoculation into Animals — Peculiarities of the Organism 

 Under Varying Conditions of Surroundings — Anthrax Vac- 

 cines — Anthrax Immune Serum .... 556 



CHAPTER XXVIII. 



The Nitrifying Bacteria — The Bacillus of Tetanus — ^The Bacillus 

 of Malignant Edema — The Bacillus of Symptomatic Anthrax 

 — Bacterium Welchii — Bacillus Sporogenes 573 



