EDITOR'S PREFACE.
The Letter to a Friend was printed, after the author's death, by his son, as a folio pamphlet, in 1690. The only copy I ever saw is in the library of the British Museum. It was re-printed, in the Posthumous Works, in 1712; and the latter portion of it (from page 48, Posthumous Works,) was included in the Christian Morals, and for that reason is not here re-printed.
From a collation with a MS. copy in the British Museum, (MS. Sloan. 1862,) several additional passages are given.
