1921. 4th Edition. 414 pages. No dust jacket. Blue cloth. Black and white photographs throughout with colour frontispiece. Severe cracking to hinges and gutters causing boards to be loose. Pages have light tanning and foxing throughout. Heavier to endpapers and pastedowns. Pages have light foxing throughout. front free endpaper. Boards have moderate shelf-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. Wear marks overall.