t lo Journal of Comparative Neurology. 



ments and compounds. If, in closing, I could have one fact 

 shine out beyond any other it would be the idea that, while 

 there is a morphological independence of the nervous elements, 

 there is a physiological dependence ; that, although there is 

 unity there is community ; and that a healthy psychic life is the 

 result of the summation of the individual activity of all the ner- 

 vous elements. 



