"The subordination of all private interests to the purposes of government, subject only to the condition that the object to be accomplished shall be one in which the public has an interest, is no longer an open question. In its general bearing this principle is too well settled and uniformly recognized--underlying the adjudications by courts of all cases involving constitutional provisions--to require more than a mere statement." And again he says: "Nor is it longer necessary to seek a justification of the common practice of regulating the rates of charges and general management of railroads on the ground that they have received valuable franchises of a public nature and had important powers of sovereign character conferred upon them. That may be an important political consideration, and as such may strengthen the argument in favor of the right; but the right itself rests upon firmer ground, and upon other considerations than that of pecuniary consideration derived from the State. The State may regulate their business, not because they are corporations, nor yet because they are corporations of a particular kind, but because they, like the individuals of which they are composed, are subject to the laws which say that when one devotes his property to a use in which the public has an interest, he in effect grants to the public an interest in that use, and must submit to be controlled by the public for the common good to the extent of the interest he has thus created." CHAPTER XI. RAILROADS AND RAILROAD LEGISLATION IN IOWA.