CONTENTS 



CHAP. 



I. Introductory 1 



II. Origin of the Idea of Evolution .... 5 



III. The Development of the Idea of Evolution to the 



Inorganic World 14 



IV. The Triumph of Catastrophism over Evolution . 20 



V. The Revolt of Scrope and Lyell against Catastro- 



phism 33 



VI. The Principles of Geology ..... 55 



VII. The Influence of LyelPs Works .... 68 



VIII. Early Attempts to establish the Doctrine of Evolu- 



tion for the Organic World ... 82 



IX. Darwin and Wallace: The Theory of Natural 



Selection 95 



X. The Origin of Specie* . . . . . .115 



XI. The Influence of Darwin's Works . . . .136 



XII. The Place of Lyell and Darwin in History . . 149 



Notes 160 



Index 165 



PLATES 

 Charles Darwin ...... Frontispiece 



G. Poulett Scrope . , . . . .to face p. 35 

 Charles Lyell . 41 

 Alfred R. Wallace 110 



