1948. 4th Edition. 440 pages. No dust jacket. Dark blue cloth with gilt lettering. Pen inscription to half title page and rear of black and white frontispiece. Pages are mildly tanned throughout. Text is clear. Binding is slightly shaky, however pages remain attached. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Visible crushing to spine. Gilt lettering has darkened. Minor splits causing fraying to cloth at spine ends. Book has a slight forward lean. Noticeable white staining.