INTRODUCTION 



ning with a single cell, contemplating unbroken con- 

 tinuity of life from parent to child indefinitely, having 

 due regard for the rigorous conditions of environment 

 v^hich all forms of life must meet, and taking account 

 of all the known peculiarities of animals, shall allo- 

 cate in its proper place each and every form of animal 

 life, and give us as a finished picture man in the domi- 

 nant position in the world which he holds today. 



[xiv] 



