1927. Third and Revised Edition. 538 pages. No dust jacket. This is an ex-Library book. Blue cloth with gilt lettering. Library copy, with expected inserts and inscriptions. Pages are moderately tanned. Notable cracking to gutters, however binding remains firm. Mild thumb-marking present. Previous owner's inscription to front pastedown. Mild droplet staining to text block edges. Boards have mild edgewear with corner crushing and notable marking to boards. Moderate tanning to spine, which has mild crushing to ends. Book has backward lean. Boards are mildly warped.