TABLE OF CONTENTS. 



PAGE 



3. DESCRIPTION OF GENERA AND SPECIES .... 65 



Spherobacteria 71 



Micrococcus 72 



Monads 78 



Microbacteria 80 



Bacterium 80 



Desmobacteria 86 



Bacillus 87 



Leptothrix 90 



Spirobacteria 91 



Vibrio 92 



Spirillum 94 



PART SECOND. 



PHYSIOLOGY OF THE BACTERIA. 

 CHAPTER I. DEVELOPMENT IN GENERAL. 



' 1. ORIGIN OF BACTERIA 101 



Heterogenesis 102 



Dissemination 103 



In Air 103 



In Water 106 



In the Human Organism 107 



2. NUTRITION AND RESPIRATION Ill 



Aliments : Water Ill 



Nitrogen 112 



Carbon 113 



Oxygen 115 



Temperature 118 



Other Agents 121 



3. REPRODUCTION 123 



Fission 123 



Spores 126 



Sjiorangia 130 



Polymorphism 133 



