It was a blow at her conventions, and she shuddered; but she stood by her guns. They had crossed down Twenty-sixth Street now and they turned into the quiet of Madison Avenue, among comfortable houses and silent churches, as she answered. "If they do that," she said, "it is because they have to." "Have to? Why on earth should they have to?" "I don't know, but I know that the very use they make of the money shows what they do is only a means and not an end." "Are trousseaus so necessary that these girls have to sell their souls for them?" "Souls have been sold for less. Even you and I make considerable sacrifices for things that other people in other classes would not think needful at all." He had done his best to bridle his annoyance, but now he could bridle it no longer. He was wholly sincere in his inability to take seriously either the girl or her point of view, and now, though he felt as if he were riding a hunter at a butterfly, he charged blindly. "Oh, please don't let us jump at sentiment and theory," he remonstrated; "let us keep our feet on figures and fact. The figures grow with the population; they always have so grown and they always will so grow. And the plain fact is that, though a few good people have been trying to stop this thing for four thousand years, they have never succeeded in doing anything but soiling themselves in the attempt." "I know that," she frankly acknowledged, "and I don't know what it is that's to blame; but I know that there isn't any evil that hasn't some cure if we can only find it out." "Then why not leave the search for a cure to the experienced?" "I shall; but I propose to become one of the experienced. I mean to give my time, at least for a while, to first-hand study. Perhaps then I shall learn enough to know that it's useless for me to go on, but I shall keep trying to go on until I am convinced that there isn't any use in the trying." "That's absurd, Marian--simply absurd. The condition is, after all, one that must be dealt with by the law, and I tell you honestly that, as yet, even the law is helpless." "Has the law really tried? Has it ever attempted, for instance, to do anything to the men that take these immigrant girls at the dock and make slaves of them?" "Yes, it has; it has tried just that. In Chicago two men were arrested for taking a couple of such girls--they had brought them from New York--and when the case was appealed, the United States Supreme Court found that, though importation of girls was a violation of federal law, yet the federal law providing a punishment for merely _harboring_ such girls after their arrival was unconstitutional." Marian's voice faltered. "Is--is that true?" she asked.