PREFACE xi 



human behavior demands that this phenomenon be 

 examined by the usual method of natural science and 

 articulated in some organic way with the vital proces- 

 ses in their entirety. The evidence is biologically 

 adequate that mind (awareness) as we know it 

 phenomenally is a function of a particular configura- 

 tion of bodily organs. Without attempting to explore 

 the philosophic implications of this simple datum of 

 experience, we shall find that its biological implica- 

 tions are far reaching. 



In brief, the whole-hearted acceptance of this 

 datum as a proximate (not ultimate) basis for further 

 scientific exploration of human conduct reveals the 

 common ground upon which objective psychology 

 and introspective psychology may co-operate har- 

 moniously without sacrifice of sound scientific method 

 or of those distinctive technical procedures which each 

 of these sciences has hitherto so fruitfully employed. 



In conclusion, a few words in amplification of the 

 dedication of this volume. My elder brother was one 

 of the few survivors of the old school of all-'round 

 naturalists, and yet so modern in his interests, his 

 viewpoints, and his methods as to rank among the 

 pioneers of the new school. An experienced field 

 naturalist, well trained in the most advanced labora- 

 tory methods of his time, a philosopher of wide read- 

 ing and profound thinking, an unsurpassed teacher, 

 first attached to the Geological and Natural History 

 Survey of Minnesota, sometime professor in Denison 



