CONTENTS. 



CHAPTER PAGE 



I. INTRODUCTION SOURCES OF BIOLOGICAL 



HISTORY ....... i 



II. THE ORIGIN OF LIFE 16 



III. THE ORIGIN OF THE ANIMAL KINGDOM . 59 



IV. THE RECORD FROM FOSSILS ... 87 



V. A VIEW IN PERSPECTIVE . . . .113 



VI. A VIEW IN PERSPECTIVE (CONTINUED) . 141 



VII. HISTORY OF PLANTS 167 



VIII. THE FUTURE OF THE LIVING WORLD . 177 



REFERENCES 189 



INDEX . . 193 



