London: Mount and Page, 1784. Revised and enlarged edition. Hardcover. 272pp. Duodecimo [17.5 cm]. Rebound in 1/2 modern beige cloth over marbled boards, with spine label. New endpapers. Title almost completely effaced from spine label, else very light wear; front hinge starting. Very good. Item #52106
"When I first entered upon these my Labours, and after I had begun the Calculations, I found that though the Book would be small, yet my Labour was so great that I almost fainted. Yet, at Length, when I considered the ordinary, necessary, and frequent Use that might be made of these my Labours, I was thereby encouraged to go on and prosecute my Work; and how ready and easy I have made it for Practice, will plainly appear, by immediate Inspection, to the meanest Capacity."