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Rh solemnly bind myself that I will faithfully keep the secret about to be committed to me; and that if I fail to keep it I will atone by immediately marrying Ugo del Ferice

"That is absurd!" cried Donna Tullia, starting back from him. He did not heed her.

And I take to witness of this oath the blessed memory of my mother, the hope of the salvation of my soul, and this relic of the True Cross. He pointed to the locket she wore at her neck, which she had often told him contained the relic he mentioned.

"It is impossible!" she cried again. "I cannot swear so solemnly about such a matter. I cannot promise to marry you."

"Then it is because you cannot promise to keep my secret," he answered calmly. He knew her very well, and he believed that she would not break such an oath as he had dictated, under any circumstances. He did not choose to risk anything by her indiscretion. Donna Tullia hesitated, seeing that he was firm. She was tortured with curiosity beyond all endurance.

"I am only promising to marry you in case I reveal the secret?" she asked. He bowed assent. "So that I am really only promising to be silent? Well, I cannot understand why it should be solemn; but if you wish it so, I will do it. What are the words?"

He repeated them slowly, and she followed him. He watched her at every word, to be sure she overlooked nothing.

"I, Tullia Mayer, swear and solemnly bind myself that I will faithfully keep the secret about to be committed to me; and that if I fail to keep it, I will atone by immediately marrying Ugo del Ferice"—her voice trembled nervously: "and I take to witness of this oath the blessed memory of my mother, the hope of the salvation of my soul, and this relic of the True Cross." At the last words she took the locket in her fingers.

"You understand that you have promised to marry me if you reveal my secret? You fully understand that?" asked Del Ferice.