Note 42 — Chapter VI

I perceive that Mr. Chaffers, in the 1870 edition of his work, says: “the discovery of the two patents granted to John Dwight ... now published for the first time, in treating on this matter,” &c.; but here he is in error. In 1863 Mr. Woodcraft printed abridgments of these very patents, and to these abridgments Mr. Chaffers is indebted for the knowledge he possessed of them. In 1864 I, too, gave notices of these patents, four years before the date of his publication.