1950. Fourteenth Revised Edition. 655 pages. Brown dust jacket over red clot with a black and white illustrated frontis and black and white illustrations throughout. Moderate tanning to pages with heavier foxing and tanning to pastedowns and endpapers. Pen and pencil inscriptions to front endpaper and heavier tanning to text block edges. Binding is very loose. Boards have heavy rubbing and minor bumping to corners. Fair crushing to spine ends and visible rubbing to spine as well. Clipped jacket with major edge wear and rubbing. There is visible tearing to corners, edges and spine ends and splitting to joints.