CONTENTS 



PART I 



THE PROBLEM OF GENESIS 

 CHAPTER I 



Psychophysical Evolution 



§ I. Scope and Method j 



§ 2. The Psychological and the Biological 4 



§ 3. Psychophysical Parallelism jo 



^2^ Psychophysical Parallelism in Evolution I3 



CHAPTER II 



Comparative Conceptions 



§ I. Recapitulation 20 



§ 2. Natural and Functional Selection; Plasticity and Intelligence . 21 



§ 3. Correlation of Characters 24 



§ 4. Psychophysical Variations 26 



CHAPTER III 



The Direction of Evolutiqjj 



§ I. Genetic Determination : Congenital and Acquired Characters . 34 



§ 2. Genetic Determination : Factors 37 



§ 3. Intergenetic Concurrence 41 



§ 4. Genetic Analogies 43 



§ 5. Preformism and Accommodation . . . , . . .45 



