:

BORIS SIDIS, M. A., PH. D.

ASSOCIATE IN PSYCHOLOGY at the pathological instituTE
OF THE NEW YORK STATE HOSPITALS

WITH AN INTRODUCTION BY

PROF. WILLIAM JAMES, OF HARVARD UNIVERSITY

INTERO

FOLIO

NEW YORK

D. APPLETON AND COMPANY

1907

COPYRIGHT, 1898,

BY D. APPLETON AND COMPANY.

medicated to

DAVID GORDON LYON, PH. D.

HOLLIS PROFESSOR OF DIVINITY
AT HARVARD UNIVERSITY.

150976