AMERICAN SCIENCE SERIES- -AD YANCED CO URSB T p- ^ ^l^^ 



THE PRINCIPLES 



OF 



PSYCHOLOGT 



BT 



WILLIAM JAMES 



PKOFESSOR OF PSYCHOLOGY IN HARVARD UNIVERSITY 



IN TWO VOLUMES 



VOL. I 



NEW YORK 



HENKY HOLT AND COMPANY 



1910 



