CONTENTS 



CHAPTER I 

 Introduction 1 



CHAPTER II 

 History of Mitochondrial Research 10 



CHAPTER III 

 The Bacterial Nature of Mitochondria 25 



CHAPTER IV 

 The Behavior of Mitochondria 42 



CHAPTER V 



Stmbionticism 58 



CHAPTER VI 



MiCROSTMBIOSIS 67 



CHAPTER VII 

 An Analysis of Symbiont Reactions 92 



CHAPTER VIII 

 Symbionticism and the Origin of Species 104 



CHAPTER IX 

 Symbionticism in Relation to Heredity and Development 115 



CHAPTER X 

 Symbionticism and Organic Evolution 131 



Literature Cited 148 



jV-^V-^' 



XI 



