116 HEREDITY 



fessor Pearson has indeed shown that the facts of 

 inheritance of mental and moral characters seem to 

 be precisely parallel to the facts of inheritance of 

 physical characters. The explanation of this paral- 

 lelism is doubtless to be found in the interdependence 

 of psychical and physical characters. 



But I hope to make it plain in the volume on 

 psychology that adequately to discuss the subject 

 of mental heredity would be to write a treatise upon 

 the principles of modern psychology. Such a task 

 is not to be attempted as an appendix to a discussion 

 of heredity in general. 



