1927. Sixth edition. 868 pages. No dust jacket. Blue cloth covered boards with gilt. Black and white illustrations throughout. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Minor inscriptions to front endpapers. Small bookshop label to front pastedown. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. Gilt lettering remains bright and clear.