"And now, will you take me back to the ball-room? I have an idea that a partner is looking for me." Del Ferice left her dancing, and went home in his little coupé. He was desperately fatigued, for he was still very weak, and he feared lest his imprudence in going out so soon might bring on a relapse from his convalescence. Nevertheless, before he went to bed he dismissed Temistocle, and opened a shabby-looking black box which stood upon his writing-table. It was bound with iron, and was fastened by a patent lock which had frequently defied Temistocle's ingenuity. From this repository he took a great number of papers, which were all neatly filed away and marked in the owner's small and ornamented handwriting. Beneath many packages of letters he found what he sought for, a long envelope containing several folded documents. He spread out the papers and read them carefully over. "It is a very singular thing," he said to himself; "but there can be no doubt about it. There it is." He folded the papers again, returned them to their envelope, and replaced the latter deep among the letters in his box. He then locked it, attached the key to a chain he wore about his neck, and went to bed, worn out with fatigue. CHAPTER XXI. Del Ferice had purposely excited Donna Tullia's curiosity, and he meant before long to tell more than he had vouchsafed in his first confidence. But he himself trembled before the magnitude of what he had suddenly thought of doing, for the fear of Giovanni was in his heart. The temptation to boast to Donna Tullia that he had the means of preventing Giovanni from marrying was too strong; but when it had come to telling her what those means were, prudence had restrained him. He desired that if the scheme were put into execution it might be by some one else; for, extraordinary as it was, he was not absolutely certain of its success. He was not sure of Donna Tullia's discretion, either, until by a judicious withholding of the secret he had given her a sufficient idea of its importance. But on mature reflection he came to the conclusion that, even if she possessed the information he was able to give, she would not dare to mention it, nor even to hint at it.