CONTENTS 



PAGE 



Preface v 



Scheme of the Classification adopted in this Book . . . . ix 



CHAPTER I 

 Introductory 1 



CHAPTER II 

 Structure and Present Distribution of the ]\Iamjialia ... 5 



CHAPTER III 

 The Possible Forerunners of the Mammalia 90 



CHAPTER IV 

 The Dawn of Mammalian Life 96 



CHAPTER V 



The Existing Orders of Mammals : Prototheria— Monotremata . 105 



CHAPTER VI 



Introduction to the Sub-Class Eutheria 116 



CHAPTER VII 

 Eutheria— Marsupialia 122 



