CONTENTS. 



INTRODUCTION. 



PAQE 



" Omue vivum ex vivo "—The overthrow of the doctrine 

 of spontaneous generation ... ... 13-21 



CHAPTER I. 



Definition of bacteria — Their place in nature — Diflfer- 

 ence between parasites and saprophytes — Nutrition of 

 bacteria — Products of bacteria — ^Their relation to oxygen — 

 Influence of temperature upon their growth . . . 22-28 



CHAPTER II. 



Morphology of bacteria — Grouping— Mode of multipli- 

 cation — Spore-formation — Motility . . 29-36 



CHAPTER III. 



Principles of sterilization by heat — Different methods 

 employed — Principles of discontinued sterilization — Ster- 

 ilization under pressure— Apparatus employed . 37-48 



CHAPTER IV. 



Disinfection — Antiseptics — Inorganic salts as disinfec- 

 tants — The value of corrosive sublimate — Heat . . 49-53 



CHAPTER V. 



The pi'inciples involved in the methods of isolation of 

 bacteria in pure culture by the plate method of Koch — 

 Materials employed 54-58 



