On May 31, 1910, the Union of South Africa became an accomplished fact. The four provinces of Cape Colony, Natal, the Orange Free State (which bears again its old-time name), and the Transvaal are henceforth joined, one might almost say amalgamated, under a single government. They will bear to the central government of the British Empire the same relation as the other self-governing colonies--Canada, Newfoundland, Australia, and New Zealand. The Empire will thus assume the appearance of a central nucleus with four outlying parts corresponding to geographical and racial divisions, and forming in all a ground-plan that seems to invite a renewal of the efforts of the Imperial Federationist. To the scientific student of government the Union of South Africa is chiefly of interest for the sharp contrast it offers to the federal structure of the American, Canadian, and other systems of similar historical ground. It represents a reversion from the idea of State rights, and balanced indestructible powers and an attempt at organic union by which the constituent parts are to be more and more merged in the consolidated political unit which they combine to form. But the Union and its making are of great interest also for the general student of politics and history, concerned rather with the development of a nationality than with the niceties of constitutional law. From this point of view the Union comes as the close of a century of strife, as the aftermath of a great war, and indicates the consummation, for the first time in history, of what appears as a solid basis of harmony between the two races in South Africa. In one shape or other union has always been the goal of South-African aspiration. It was "Union" which the "prancing proconsuls" of an earlier time--the Freres, the Shepstones, and the Lanyons--tried to force upon the Dutch. A united Africa was at once the dream of a Rhodes and (perhaps) the ambition of a Kruger. It is necessary to appreciate the strength of this desire for union on the part of both races and the intense South-African patriotism in which it rests in order to understand how the different sections and races of a country so recently locked in the death-struggle of a three years' war could be brought so rapidly into harmonious concert.