1949. Second Edition. 255 pages. No dust jacket. This is an ex-Library book. Red cloth. Black and white photographic plates throughout, as well as diagrams. Expected library inserts, stamps and inscriptions. Pages and plates are mildly tanned and foxed, but text and images remain bright and clear. Binding is firm. Boards have light shelf-wear, with minor corner bumping and moderate scuffing to edges. Spine has moderately faded lettering, and mild crushing to ends. Faint rubbing overall, with small bleach spots to rear board.