London: Methuen, 1921. Third edition, with new author introduction (first ed. was in 1896). Tall octavo, hardcover, dark green cloth. xxvi, 627 pp, index. Minor rubbing to spine tips, joints; small shallow bruise to bottom edges of covers; page edges yellowed, text paper lightly toned; ink names to upper inner corner of front free endpaper; otherwise a VG clean and tight copy.