Another morning dawned upon the wretched captive, and the fatal index of his doom met his eyes. Two windows!--and _two_ days--and all would be over! Fresh food--fresh water! The mysterious visit had been paid, though he had implored it in vain. But how awfully was his prayer answered in what he now saw! The roof of the dungeon was within a foot of his head. The two ends were so near, that in six paces he trod the space between them. Vivenzio shuddered as he gazed, and as his steps traversed the narrowed area. But his feelings no longer vented themselves in frantic wailings. With folded arms, and clenched teeth, with eyes that were bloodshot from much watching, and fixed with a vacant glare upon the ground, with a hard quick breathing, and a hurried walk, he strode backwards and forwards in silent musing for several hours. What mind shall conceive, what tongue utter, or what pen describe the dark and terrible character of his thoughts? Like the fate that moulded them, they had no similitude in the wide range of this world's agony for man. Suddenly he stopped, and his eyes were riveted upon that part of the wall which was over his bed of straw. Words are inscribed there! A human language, traced by a human hand! He rushes towards them; but his blood freezes as he reads:-- "I, Ludovico Sforza, tempted by the gold of the Prince of Tolfi, spent three years in contriving and executing this accursed triumph of my art. When it was completed, the perfidious Tolfi, more devil than man, who conducted me hither one morning, to be witness, as he said, of its perfection, doomed me to be the first victim of my own pernicious skill; lest, as he declared, I should divulge the secret, or repeat the effort of my ingenuity. May God pardon him, as I hope he will me, that ministered to his unhallowed purpose! Miserable wretch, whoe'er thou art, that readest these lines, fall on thy knees, and invoke, as I have done, His sustaining mercy, who alone can nerve thee to meet the vengeance of Tolfi, armed with this tremendous engine which, in a few hours, must crush _you_, as it will the needy wretch who made it."