Good. Item #14587
New Haven: Yale University Press, 1950. First American Edition. Two volumes; octavos; uniformly bound in publisher's brown cloth, dark blue spine titling; xiii,,585; v,,390pp.; portrait frontispiece at head of Vol. I. Boards scuffed at extremities, nine-tenths of rear joint cloth of Vol. I split, spines toned, partly redacted ownership signature to front free endpapers, else Good reading copies overall, lacking dust jackets. Forms part of the series Rare Masterpieces of Philosophy and Science.