PREFATORY NOTE
Reading edition
This volume is the result of lectures delivered during the month of January, nineteen hundred and twenty-six, upon the Larwill Foundation of Kenyon College, Ohio. In acknowledging the many courtesies received, I wish to express also my appreciation of the toleration shown by the authorities of the College to delay in publication. The intervening period has permitted a full revision and expansion of the lectures as originally delivered. This fact will account for an occasional reference to books published in the interval.
J. D.