Principles of Order *l. Errol E. Harris: The Survival of Political Man. (Johannesburg: Witwatersrand University Press, 1950. Pp. xi, 225. Distributed in the U.S.A. by Hafner Publishing Co., New York. $4.00.) 2. F. Lyman Windolph: Leviathan and Natural Law. (Princeton: Princeton University Press, 1951. Pp. ix, 147. $2.50.)