1965. Eighth Impression. 322 pages. Green dust jacket over green cloth. Revised and partly re-written by Sir James Stubblefield. Contains black and white in-text illustrations. Pages remain bright and clear with minimal tanning and foxing. Occasional thumb-marking present. Binding remains firm. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Clipped jacket has moderate edge wear with chips, tears and creasing. Mild rubbing and marking to surfaces, with scuffing to edges and small splits to joints. Tanning to spine and edges.