viii CONTENTS. 



VII. 



PAGH 



Lyell and Modern Geology— Darwin 's Theory of Selection 

 — Beginning of Life 127 



VIII. 



Heredity—Reversion— Variability — Adaptation— Results of 

 Use and Disuse of Organs— Differentiation leading to 

 Perfection 165 



IX. 



The Development of the Individual (Ontogenesis) is a Re- 

 petition OF the Historical Development of the Family 

 (Phylogenesis) 195 



X. 



The Geographical Distribution of Animals in the light of 

 the Doctrine of Derivation 22a 



XL 

 The Pedigree of Vertebrate Animals 24S 



Xll. 

 Man 282 



References and Quotations ,.,»,»,, 311 



