With an Introduction by Bertrand Russell, F.R.S. London: Kegan Paul, Trench, Trubner & Co. Ltd, 1922.
8vo, 189 pp., publisher’s dark green/blue cloth with spine lettered in gilt, lower board slightly marked, some minor restoration to the spine panel, free endpapers toned as always with this book, front endpaper with the inscription ‘P.C. Robertson from D.S.R, 6 Feb 1923’, contents crisp and clean throughout, a very good copy of the first impression in its earliest state.