Standard Oil Company v. United States

. . . . Because the unification of power and control over petroleum and its products which was the inevitable result of the combining in the New Jersey corporation by the increase of its stock and the transfer to it of the stocks of so many other corporations, aggregating so vast a capital, gives rise, in and of itself, in the absence of countervailing circumstances, to say the least, to the prima facie presumption of intent and purpose to maintain the dominancy over the oil industry, not as a result of normal methods of industrial development, but by new means of combination which were resorted to in order that greater power might be added than would otherwise have arisen had normal methods been followed, the whole with the purpose of excluding others from the trade and thus centralizing in the combination a perpetual control of the movements of petroleum and its products in the channels of interstate commerce.