HARVARD COLLEGE LIBRARY

GIFT OF

MRS. WALTER S. BARKER
FEBRUARY 25, 1931

COPYRIGHT, 1897
BY ARLO BATES
ALL RIGHTS RESERVED

THIS volume is made up from a course of lectures delivered under the auspices of the Lowell Institute in These have been revised and to

the autumn of 1895.

some extent rewritten, and the division into chapters made; but there has been no essential change.