CONTENTS 



LECTURE I 



PAGE 



Introductory 3 



LECTURE II 

 Huxley, and the Problem of the Naturalist 33 



LECTURE III 

 Nature and Nurture . -49 



LECTURE IV 

 Lamarck 83 



LECTURE V 

 Migration in its bearing on Lamarckism loi 



LECTURE VI — Part I 

 Zoology, and the Philosophy of Evolution 123 



LECTURE VI — Part II 

 A Note on the Views of Galton and Weismann on Inheritance . 143 



LECTURE VII 

 Galton, and the Statistical Study of Inheritance . . . 153 



LECTURE VIII 

 Darwin, and the Origin of Species 183 



LECTURE IX 



Natural Selection, and the Antiquity of Life 215 



vii 



