Constitutional History of the First British Empire. By A. Berriedale Keith, D.C.L., D.Litt., of the Inner Temple, Barrister-at-Law, and Advocate, Regius Professor of Sanskrit and Comparative Philology, and Lecturer on the Constitution of the British Empire at the University of Edinburgh, formerly Assistant Secretary to the Imperial Conference. (Oxford: Clarendon Press; New York: Macmillan Company. 1930. Pp. xi, 443. $7.00)