1910. Reprinted. 160 pages. No dust jacket. Pictorial cloth covered boards. Black and white diagrams throughout. Pages remain bright and clean with minimal tanning and foxing. Cracking to front hinge with netting exposed. Binding loose. Front free endpaper missing. Half-title page with heavy scratches and a small tear. Boards have heavy shelf wear with bumping and fraying to corners and crushing and fraying to spine ends. All surfaces heavily tanned, particularly spine. Some additional rubbing marks, creasing and staining.