"Part of it you know: how I did what I could to bring the railroad, and how your brother's teaspoonful of nuggets was made to work a devil's miracle to hurry things along when the railroad work was stopped. But that wasn't the worst. As you know, I had a debt to pay before I could say: 'Come, little girl, let's go and get married.' So I became a stockholder in Cortwright's power company, knowing perfectly well when I consented that the hundred thousand dollars' worth of stock he gave me was a bribe—the price of my silence and non-interference with his greedy schemes."

"But you didn't mean to keep it; you knew you couldn't keep it!" she broke in; and now he did not need to look to know that her lips were trembling piteously.

"I did keep it. And when the time was fully ripe I sold it back to Cortwright, or, rather, I suppose, sold it through him to some one of his wretched gulls. I meant to pay my father's debt with the money. I had the letter written and ready to mail. Then the tempter whispered that there was no hurry, that I might at least keep the money long enough to make it earn something for myself. Also, it struck me that this same devil was laughing at the spectacle of a man so completely lost to a decent sense of the fitness of things as to be planning to pay an honor debt with graft money. And so I kept it for a while."

She dropped quickly on the step beside him and a sympathetic hand crept into his.

"You kept it until the unhappy day when you gave it to my father, and he—and he threw it away." She was crying softly, but his attempt to comfort her was almost mechanical.

"Don't cry about the money. It had the devil's thumb-prints on it, and he merely claimed his own and got it." Then he went on as one determined to leave nothing untold. "Cortwright had bought me, and I served him as only a man in my position could serve him. I became a promoter, a 'booster,' with the others. There have been times when a word from me would have pricked the bubble. I haven't said the word; I am not saying it now. If I should say it I'd lose at a single stroke all that I have been fighting for. And I am not a good loser, Amy."

For once the keen, apprehending perception failed.

"I don't understand," she said, speaking as if she were groping in thick darkness. "I mean I don't understand the motive that could——"

He turned to her in dumb astonishment.

"I thought I had been making it plain as I went along. There has been but the one motive—a mad passion to give, give, never counting the cost. Love, as it has come to me, seems to have neither conscience nor any scruples. Nothing is too precious to be dragged to the sacrifice. You wanted something—you needed it—therefore it must be purchased for you. And the curious part of the besetment is that I have known all along that I was killing your love for me. If it wasn't quite dead before, it will die now—now that I have told you how I am flinging the last vestiges of uprightness and honor to the winds."