viii CONTENTS. 



VII. 



PAGE 



Lyell and Modern Geology — Darwin's Theory of Selec- 

 tion — Beginning of Life 127 



VIII. 



Heredity — Reversion — Variability — Adaptation — Results 

 of Use and Disuse of Organs — Differentiation lead- 

 ing TO Perfection 165 



IX. 



The Development of the Individual (Ontogenesis) is a 

 Repetition of the Historical Development of the 

 Family (Phylogenesis) 195 



X. 



The Geographical Distribution of Animals in the light 



of the Doctrine of Derivation 222 



XI. 

 The Pedigree of Vertebrate Animals 248 



XII. 

 Man 2S2 



References and Quotations 311 



