London: Kegan Paul. Trench, Trubner & Co.,Ltd. 1927. First edition. Hardcover. 8vo. (8),198pp. followed by 15pp publisher's catalogue. Dark green cloth, gilt spine title. Part of the International Library of Psychology, Philosophy and Scientific Method series edited by C. K,. Ogden.
First edition of Buchanan's 1925 thesis of the same title. With the bookplate of William R. Mathews, Jr., on the front pastedown.
light soiling and sunning, some wear to edges and corners but a very good copy. Very good. Item #19176