An Essay Concerning Human Understanding: To which are Now First Added, I. An Analysis of Mr. Locke's Doctrine of Ideas, on a Large Sheet. II. A Defence of Mr. Locke's Opinion Concerning Personal Identity, with an Appendix. III. A Treatise on the Conduct of the Understanding. IV. Some Thoughts Concerning Reading and Study for a Gentleman. V. Elements of Natural Philosophy. VI. A New Method of a Common Place-book Extracted from the Author's Works, Volume 2