CONTENTS 



PAGE 



Preface richard swann lull v 



Chapter I. The Origin of the Earth . . Joseph barrell 1 

 Chapter II. The Earth's Changing Surface and 



Climate charles schuchert 45 



Chapter III. The Origin of Life . lorande loss woodruff 82 



Chapter IV. The Pulse of Life . . richard swann lull 109 

 Chapter V. Climate and the Evolution of Civilization 



ELLSWORTH HUNTINGTON 147 



Index 195 



