A Study of History. Volume XII, Reconsiderations. By Arnold J. Toynbee. [Issued under the auspices of the Royal Institute of International Affairs.] (New York: Oxford University Press. 1961. Pp. x, 740. $10.00.) and The Intent of Toynbee's History. By William H. McNeill et al. Edited by Edward T. Gargan. Preface by Arnold J. Toynbee. (Chicago: Loyola University Press. 1961. Pp. viii, 224. $5.00.)