1920. Seventh Edition. 319 pages. No dust jacket. Brown paper covered boards with brown cloth spine and lettering. Black and white illustrated frontispiece and illustrations. Slight crinkling to paper at gutter. Clean pages and illustrations with noticeable tanning and foxing throughout. Tightly bound with faint thumb marking throughout. Heavier tanning to free endpapers. Moderate tape marks to pastedowns and free endpapers. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Slight crushing and splits to spine ends and corners. Lettering is darkened. Visible wear marks to boards.