WALLIS, John (1616-1703). A Treatise of Algebra both historical and practical, London: John Playford, 1685, FIRST EDITION, engraved portrait frontispiece, 10 folding plates [bound with] John CASWELL. A brief (but full) Account of the Doctrine of Trigonometry, London: John Playford, 1685, 2 works bound togehter, 2° (310 x 190mm.) (first title soiled, some margins dampstained, Bb3 torn without loss of text, upper corner of Hh2 & lower corner of GG3 torn out, leaves lightly browned), contemporary panelled calf (rebacked, recornered, worn). [Wing W613; C1252].