An Essay concerning human understanding : also extracted from the author's works, I. 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 / by John Locke.