Mr. Watson published a variety of books upon practical subjects, and of a useful nature. But his principal work was his Body of Divinity in 176 Sermons upon the Assembly’s Catechism, which did not appear till after his death. It was published in one volume folio, in 1692, accompanied with a portrait of the author by Sturt, a recommendatory Preface by the Rev. William Lorimer, and the attestation of twenty-five other ministers, of principal note in that day; and has since passed through a number of editions both in England and Scotland. - Summary by Biographical Notice