(like those covered by the statute here called in question) flows from the duty of the State to preserve for its people a valuable food supply. Phelps v. Racey, 60 N. Y. 10; Ex parte Maier, 103 California, 476; Magner v. The People, 97 Illinois, 320, and the cases there cited. The exercise by the State of such power therefore comes directly within the principle of Plumley v. Massachusetts, 155 U. S. 461, 473. The power of a State to protect by adequate police regulation its people against the adulteration of articles of food, (which was in that case maintained), although in doing so commerce might be remotely affected, necessarily carries with it the existence of a like power to preserve a food supply which belongs in common to all the people of the State, which can only become the subject of ownership in a qualified way, and which can never be the object of commerce except with the consent of the State and subject to the conditions which it may deem best to impose for the public good.”
In the case of Plumley v. Massachusetts, referred to in the opinion just cited, 155 U. S. 461, 473, it was held that a law of the State of Massachusetts which prevented the sale of oleomargarine colored in imitation of butter was a legal exertion of police power on the part of the State, although oleomargarine was a wholesome article of food transported from another State, and this upon the principle that the Constitution did not intend, in conferring upon Congress an exclusive power to regulate interstate commerce, to take from the States the right to make reasonable laws concerning the health, life and safety of its citizens, although such legislation might indirectly affect foreign or interstate commerce, and the general statement in Sherlock v. Alling, 93 U. S. 99, 103, was quoted with approval: “And it may be said generally, that the legislation of a State, not directed against commerce or any of its regulations, but relating to the rights, duties and liabilities of citizens,- and only indirectly and remotely affecting the operations of commerce, is of obligatory force upon citizens within its territorial jurisdiction, whether on land or water,