Cambridge, England: Cambridge University Press, 1953. Octavo, xxii, 494 pp. Second edtion, corrected and slightly enlarged, with new author preface. Tanning to page edges, 1953 ink owner inscription on front free endpaper, else a VG clean and unworn copy. Pale grey dust jacket has small corner chips at tips of tanned and rubbed spine; light tanning to panels; VG otherwise.