Aurea clavis: or, A golden key to the cabinet of contractions [electronic resource] : unlocking all the misteries (and seeming difficulties) of an engraven sheet of short-hand lately published, entituled, A regular and easy table of natural contractions by the persons, moods, and tenses, &c. By William Mason, writing-master, at the Hand and Pen in Bell-Yard, between Grace-Church-Street and Cornhill, London. It being nearly suited to his late short-hand book, entituled, Arts advancement, &c. But more exactly adapted to a short-hand, in manuscript, which he now teacheth. This present clavis is suited to the meanest capacity, and gives directions how to apply the said contractions to any other short-hand: instance being given, at the end of this book.