JOHN M. KELLY LIBDADY Donated by The Redemptorists of the Toronto Province from the Library Collection of Holy RedeemerCollege, Windsor of University St. Michael's College, Toronto J/^t/x/. "«' (^fXfrvc^Cc^t-^-tv-C- k > \ \ ''fiflK rfl)^* *rw^f *?«»datus. 6\BL/OTh ^c. mi moH^^ apf^'^oatus THE PRIIs'CIPLBS OF PSYCHOLOGY BY WILLIAM JA^IES PROFESSOR OF PSYCHOLOGY IN HARVARD UNIVERSITY IN TWO VOLUJIES <^ VOL. L ^SUOTH|^. MACMILLAN AND CO., Ltd. PRINTED IN THE U. S. A. TO MY DEAB FRIEND FRANCOIS PILLON. AS A TOKEN OF AFFECTION, AND AN ACKNOA\i^DGMENT OF WHAT IOWB TO THE Critique PHiixjsopHiquB.