viii CONTENTS. 



PAGR 



Natural Selection and the Spiritual World. 



i. Darwinism complete and incomplete : Mr. A. R. 

 Wallace's exclusive advocacy of Natural Selec- 

 tion and desertion of it 87 



8 2. The Evolution of Morality and what it implies : 



Utilitarianism vindicated and corrected . . 96 



3 3- 



Intellectual Evolution : Mathematics, music, meta- 



physics, wit ........ 107 



4. Conclusion: the true " spiritual world " . . .114 



Natural Selection and the History of Institu- 

 tions. 



1. Historian versus Evolutionist 119 



2. "Variation " in Sociology . . . . 121 



3. "Heredity": "Survivals" 131 



4. " Struggle for Existence " . . . . 139 



