The distinguishing feature of the British system of government is the principle described by Professor Dicey as the Rule of Law. The constitutional history of England is the story of a struggle to put this theory into rigorous practice, first against the claims of private lords to the governance of their tenantry, and secondly against the kingly power exercised by commissions, special tribunals and appointive ministries. When the parliamentary regime triumphed over all its adversaries and was itself brought under the control of the people through sweeping electoral reforms, we are apt to think of the British system as having reached its objective as a movement that for better or for worse had exhausted its potentialities. The Industrial Revolution and its multiplying consequences in every phase of social life seem to have occasioned no outstanding development in the institutions of British government. The Law works through the same instruments and to a great extent still within the same bounds set for it by an agrarian society. This on a rigid interpretation must be considered a criticism of the efficacy of the Rule of Law in the achievement of social justice. The problems of our industrial era are imperfectly enclosed within the narrow fences of conventional law. To many a man, private enterprise seems to wield a lordship over his life and property as untrammelled as that of the feudal lord over his liege men. The British system, however, has now outstepped the territorial limits of the United Kingdom. The self-governing Dominions are inheritors of the Rule of Law as truly as the Parliament at Westminster. It is the object of this paper to describe developments in the governmental system of the Common-