1924. Third Edition, Revised. 686 pages. No dust jacket. Grey cloth with gilt. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. Heavy cracking at the hinges with exposed binding material. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Gilt lettering is bright and clear. Cloth has minor damp and dust stains. Book has a slight forward lean.