CONTENTS XI 



BOOK VII 



THE ACTION OF MIGRATIONS 



CHAPTER XXVI 



PAGE 



THE MIGRATIONS OF MARINE ANIMALS . . . 280-92 

 The relation of the migrations of beings to Palaeogeo- 

 graphy The migrations of marine animals The 

 influence of ocean currents The displacement of 

 foreshores and the migration of the environment 

 The part played by incursions of the sea. 



CHAPTER XXVII 



THE MIGRATIONS OF TERRESTRIAL VERTEBRATES . . 293-317 

 Importance of these migrations Migrations in Prim- 

 ary times Palaeogeographical sketch of the Primary 

 and Secondary Articulates Migrations in Secondary 

 times Evolution of the Continents Migrations of 

 Tertiary Mammals. 



BOOK VIII 

 CHAPTER XXVIII 



THE APPEARANCE OF LIFE ON THE GLOBE * . 318-37 

 The geological problem of the beginnings of life The 

 Silurian world The primordial fauna of Barrande 

 The Cambrian world The pre-Cambrian fossils of 

 Brittany and the Rocky Mountains The crystallo- 

 phyllian earths and the metamorphism of the old 

 sediments. 



INDEX OF SUBJECTS 339 



INDEX OF NAMES . . . . . -355 



TABLE OF THE AGES OF THE EARTH . . . At end 

 TABLE OF CLASSIFICATION OF THE ANIMAL KINGDOM 



