Contents. ix 



PAGB 



[V. Two Contemporaneous Doctrines: Mechanism, which reduces 

 Thought to Movement ; and Idealism, which refers Movement 

 to Thought ... ... 2 42 



V. Is the Problem of the Relations between Physics and Morals a 



Case of the Law of Correlation of Forces ? ... ... ... 252 



CHAPTER II. 



THE RELATIONS BETWEEN THE PHYSICAL AND THE MORAL: 

 A PARTICULAR CASE. 



I.I Has every Psychological State its Antecedent in a Physiological 



State?, ... ... ... ... ... ... 259 



II. Examples drawn from the so-called Ideal Passions ... ... 261 



III. Examples drawn from the Intellectual States ... ... 264 



CHAPTER III. 



PSYCHOLOGICAL AND PHYSIOLOGICAL HEREDITY. 



I. Possible Hypotheses as to the Relations between these two 

 Heredities. Is Psychological Heredity the Cause of Phy- 

 siological Heredity? Is Physiological Heredity the Cause of 

 Psychological Heredity ? Agreement of the Empirical and 

 Idealistic Solutions ... ... ... ... ... 267 



II. Can Heredity be explained ? Darwin and Pangenesis. Heredity is 



Identity ... ... ... ... ... ... 276 



PART FOURTH. 

 THE CONSEQUENCES. 



CHAPTER I. 

 HEREDITY AND THE LAW OF EVOLUTION. 



I. The Hypothesis of Evolution ... ... ... ... 283 



II. Can Heredity become a Means of Selection, by Accumulating 

 Slight Differences ? Consanguineous Marriages. Half-breeds : 

 Predominance of the Superior Race ... ... ... 289 



III. Heredity as a Cause of Decadence ... ... ... ... 301 



