CONTENTS 



CHAPTER I 



PACK 

 THE GENERAL FUNCTIONS OF MICROBES THE TRANSFORMATION 



CYCLES OF CARBON AND NITROGEN I 



CHAPTER II 



MICROBES IN THE HUMAN BODY LIFE WITHOUT MICROBES 



THE INTESTINAL FLORA 25 



CHAPTER III 



FORM AND STRUCTURE OF MICROBES $O 



CHAPTER IV 



PHYSIOLOGY OF THE MICROBES 72 



CHAPTER V 



PATHOGENIC MICROBES INFECTION IO7 



CHAPTER VI 



INFLAMMATION AND PHAGOCYTOSIS 130 



CHAPTER VII 



THE PATHOGENIC PROTOZOA: FILTER-PASSING VIRUSES ... 14! 



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