Twenty Third Edition. 322 pages. No dust jacket. Green cloth boards with gilt lettering. Colour illustrated frontispiece and black and white illustrations throughout. Hinges and gutters are slightly cracked with exposed netting. Binding is slightly loose. Pages and illustrations are moderately tanned with noticeable foxing. Heavier tanning to pastedowns and free endpaper. Top fore edge textblock dyed gold. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Moderate crushing and splits to spine ends. Minor water marks to front board. Gilt lettering is darkened. Book has a slight forward lean.