1905. Fourth impression. 542 pages. No dust jacket. Red cloth covered boards with gilt. Black and white diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Cracking to front hinge. Binding slightly loose. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering to spine is slightly dulled. Book has slight backwards lean.