4th edition. 368pp, with black and white plate illustrations and line drawings in text. Red cloth-covered boards with gilt lettering on front and spine. 8vo. Cloth a little rubbed and rounded at corners and spine ends. Some spotting on text block edges. Internally neat, clean, bright and tight. In its original paper dust wrapper, price clipped, worn, faded and a little rubbed and chipped on edges and folds, a little more heavily at the spine head.