CONTENTS. 



Introductory i — n 



Chapter I. — Brief History of Bacteriology. 



Earliest days. — Perfection of the single lens. — 

 The "Dutch Microscopist." — His discoveries. — The 

 compound microscope. — First account of the germ 

 theory of disease. — A problem of ancient bacterio- 

 logy. — Men who have made valuable contributions 

 to the science. — Th'eir discoveries 11-27 



Chapter II. — ^The Relation of Bacteria to Disease. 

 Bacteria in Processes of Nature. 



Mysteries revealed by the microscope. — Cell forma- 

 tion. — The organs and systems of the body. — 

 Health dependence. — Cell functions. — Cell derange- 

 ment. — The term bacteria. — Bacteria as friends. — 

 Bacteria as enemies. — The first use of the term 

 bacteria. — Relative size of saprophytic and parasitic 

 families 27-37 



Chapter III. — Description of the Most Important 

 Bacteria. — Methods of Multiplication, Etc 



Morphology. — Spore- forming bacteria. — Non- 

 spore- forming bacteria. — Development. — Multipli- 

 cation. — Dimensions. — Coloring bacteria. — Pha- 

 gocytes. — Phagocytosis. — Opsonins. — Resistive 

 power of spores. — Parent bacillus after spore 

 formation ; its life or death. 37-47 



Chapter IV. — Bacterial Invasion. — How Bacteria 

 Gain an Entrance to the System. 



Parke's list of communicable diseases. — Period of 

 incubation. — Invasion. — Channels of Entrance. — 

 Development of symptoms. — How infection is 

 thrown off. — Sources whereby bacteria die within 

 the body. — Immunity, natural, acquired, artifical. — 

 Antitoxins — their preparation and uses. — Koch's 

 Circuit. — The Opsonic Theory 47-68 



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