WALLIS, JOHN. A Treatise of Algebra, both Historical and Practical . . . With Some Additional Treatises. 10 folding engraved plates; lacks the portrait of Wallis. [20], 374; [4], 17, [1]; [2], 76 [i. e., 176]; [2], 17 pages. 4 parts in one volume. Folio, 302x188 mm, later 18th-century tree sheep gilt with morocco lettering piece, worn, spine ends chipped, front joint cracked, cords intact; contents toned, marginal dampstaining through most of volume with scattered traces of mold, some early pencil marginalia, general title soiled. London: John Playford for Richard Davis in Oxford, 1685