" 291 U.S. at 558. Intimating that the New York statute was as efficacious as a safety regulation that essential "householders to pour oil on their roofs as a means of curbing the spread of fireplace when found in the neighborhood," Justice McReynolds insisted that "this Court will have to have regard to the knowledge of the enactment," and must "decide no matter whether the signifies proposed have fair relation to one thing in legislative power.