printed for the author. Sold by Messrs. Mount and Page, on Tower-Hill; Mr. Johnson and Co. in Pater-Noster-Row; and Mr. B. Law, in Ave-Mary-Lane, Booksellers. Mr. Adams, and Mr. Martin, in Fleet-Street; and Messrs. Heath and Wing, Mathematical-Instrument-Makers, in the Strand. London

Burton, printer, 82, Fetter Lane