HOW TO LIVE ON 24 HOURS A DAY
THE HUMAN MACHINE
LITERARY TASTE
MENTAL EFFICIENCY

Miscellaneous

CUPID AND COMMONSENSE: A Play
WHAT THE PUBLIC WANTS: A Play
THE TRUTH ABOUT AN AUTHOR
THE FEAST OF ST. FRIEND

GEORGE H. DORAN COMPANY

NEW YORK

MENTAL EFFICIENCY

AND OTHER HINTS
TO
MEN AND WOMEN

BY