CONTENTS 



PAGE 

 V 



Preface . ..... 



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



CHAPTEE I 

 Introductory . . , . . 1 



CHAPTER II 

 Structure and Present Distribution of the Mammalia . . 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 



