DEVELOPMENT AND EVOLUTION 



s 



PART I 



THE PROBLEM OF GENESIS 

 CHAPTER I 



PSYCHOPHYSICAL EVOLUTION 



I. Scope and Method 



THE point of view from which the questions taken up 

 in the following pages are considered is still exclusively 

 that of the earlier volumes of this series, 1 the genetic. 

 But the broadening out of the range of discussion to in- 

 clude biological questions as well as psychological, makes 

 our method now Biogenetic rather than Psychogenetic- 

 a distinction made out in the volume on Social and Etliical 

 Interpretations. It is not now, in these discussions, a 

 question of the application of results, drawn from the 

 mental life exclusively, to the larger problem of racial and 

 social evolution ; it is rather the interpretation of the 

 whole series of facts drawn from all these spheres, exam- 

 ined with view to a general conception of genesis (subject 

 to the self-imposed limitations indicated in the Preface). 



The emphasis is, however, still on the mental, and the 



1 Mental Development in the Child and the Race, 2d edition reprinted, 

 1897, and Social and Ethical Interpretations,^ ed. 1902. 



B I 



