CONTENTS. IX 



CHAPTER VII. 



PAGE 



Parasites and Saprophytes ' 145-149 



Putrefactive Bacteria — Pigment-forming Bacteria — Enzyme- 

 forming Bacteria — Non-pathogenic, Saprophytic, Parasitic, 

 Pathogenic Bacteria — Sarcina Ventriculi — Leptotbrix Buccalis 

 — Facultative Saprophytes — Facultative Pathogenic Para- 

 sites — Anthrax Bacillus — "Pathogenic," "Parasitic," "Sa- 

 prophytic," merely Relative Terms. 



CHAPTER VIII. 



Cholera - - 150-170 



Cholera a Parasitic Disease — Early Observations on the Comma 

 Bacillus — Characters — Methods of Staining — Methods of 

 Isolation — Use of Plate Method in Practical Public Health 

 Work— Tube Cultures— Motility of Cholera Bacilli— Potato, 

 Blood-serum, and Milk Growths — Behaviour in Water and 

 Sewage — Infection of Man through Agency of Bacillus — 

 Early Inoculation Experiments — Koch — Nicati and Rietsch 

 — Macleod — Difficulties — Cholera in Guinea-pigs — Position 

 of Bacilli in Tissues — Presence of Spores doubtful. 



CHAPTER IX. 



Cholera (continued) - '7i-i93 



Pettenkofer's researches — Saprophytic and Parasitic Stages of 

 Cholera Bacilhis — Temperature Conditions — Relation to 

 Epidemics — Moisture — Ground Water — Flushing — Cholera 

 in Shanghai Endemic but Intermittent — Cholera Endemic at 

 the Mouth of the Ganges — Vitality of Cholera in OH 

 Cultures — Relation of this to Quiescent Periods during Parts 

 of the Year — Gastro-intestinal Irritations prepare for Cholera 

 — Chinese Vegetables — Cholera Poison formed in the In- 

 testine, absorbed into Body — Inoculation against Cholera 

 — Gamaleia's Experiments — Germicides useful in attacking 

 the Cholera Bacilli — -Water Supply, Pilgrimi^es, Feasts pre- 

 disposing to Cholera — Quarantine except in Harbours IJse- 

 less — Time and Place Dispositions. 



CHAPTER X. 



Typhoid Fever - - - ... 194-204 



Typhoid Fever a Bacterial Disease — Recklinghausen's Observa- 

 tions — Klein — Eberth — Klebs— Coats — The Bacillus — 

 Method of Staining — Position in Tissues — Gaffky's Observa- 

 tions — Pure Cultures — Excretory Products — Experiments on 

 Animals — Mixed Infections — Action of Light and Heat on 

 Typhoid Bacilli — Pseudo-typhoid Bacilli. 



