Études d'Histoire Pacifiste—Bayle (1647-1706).. By Madame Elise Constantinescu-Bagdat. Paris: Les Presses Universitaires de France, 1928. pp. 120. Index. Fr. 25. - Heading for War, What You Ought To Know and Fear. By W. H. Edwards. New York: Payson & Clarke, Ltd., 1928. pp. 162. $1.50. - Back of War. By Henry Kittredge Norton. New York: Doubleday, Doran & Co., Inc., 1928. pp. xviii, 356. $2.50.