Vlll TABLE OF CONTENTS 



CHAPTER X 



PAGE 



PRESENT ASPECTS OF THE THEORY OF EVOLUTION . 278 



The struggle for existence. Natural selection. Correlation of organs. 

 Fortuitous variation. Origin of the fittest. Nageli's theory: Initial ten- 

 dency supreme. Weismann and the Neo-Darwinians : Natural selection 

 omnipotent. The Neo-Lamarckians. Comparison of the Neo-Darwinian 

 and the Neo-Lamarckian views. "Individuality" the controlling power 

 throughout the life of the organism. Transmission of special effects of use 

 and disuse. Summary. 



CHART SHOWING SEQUENCE OF ATTAINMENTS AND 



OF DOMINANT FUNCTIONS 309 



PHYLOGENETIC CHART OF THE ANIMAL KINGDOM . 310 



JLNDEX O.LJL 



