Book ii. chap. vi., of the notion of virtue in the morality of Common

Sense in Book iii. chap. ii., and of evolutional ethics in Book iv. chap. iv. (chiefly).

I may add that all the important alterations and additions have been published in a separate form, for the use of purchasers of my second edition.

FOOTNOTE:

[5] I must here acknowledge the advantage that I have received from the remarks and questions of my pupils, and from criticisms privately communicated to me by others; among these latter I ought especially to mention an instructive examination of my fundamental doctrines by the Rev. Hastings Rashdall.

PREFACE TO THE FOURTH EDITION

The chief alterations in this fourth edition are the following. (1) I have expanded the discussion on Free Will in Book i. chap. v. § 3, to meet the criticisms of Mr. Fowler, in his _Principles of Morals_, and Dr. Martineau, in his _Types of Ethical Theory_. (2) In consequence of the publication of the last-mentioned work, I have rewritten part of chap. xii. of Book iii., which deals with the Ethical view maintained by Dr. Martineau. (3) I have expanded the argument in