CONTENTS 



CHAPTER PAGE 



I. LIFE HISTORY OF A FERN i 



I[. LIFE HISTORY OF A FERN (Concluded) 20 



ill. FUNDAMENTAL PRINCIPLES 31 



IV. HEREDITY 45 



V. EXPERIMENTAL STUDY OF HEREDITY 55 



VI. EVOLUTION 79 



VII. DARWINISM 90 



VIII. EXPERIMENTAL EVOLUTION 101 



IX. THE EVOLUTION OF PLANTS 124 



X. GEOGRAPHICAL DISTRIBUTION 139 



XI. PALEOBOTANY 183 



XII. THE EVOLUTION OF PLANTS (Concluded) 201 



XIII. THE GREAT GROUPS OF PLANTS 243 



BIBLIOGRAPHY 252 



INDEX ... 257 



