THE PSYCHOLOGY

OF LAUGHTER

Works By Boris Sidis

The Psychology of Laughter

The Psychology of Suggestion

Multiple Personality

Psychopathological Researches

Sleep

Philistine and Genius

183

LOAN STACK

COPYRIGHT, 1913, BY

D. APPLETON AND COMPANY

Printed in the United States of America

TO MY LOYAL FRIENDS

G. S. W. AND P. W. W.

IN TOKEN OF ESTEEM

AND DEVOTION

436

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