After several days' delay, we received an answer this morning from the authorities, with permission to see the bridge of sighs, and the prisons of the ducal palace. We landed at the broad stairs, and passing the desolate court, with its marble pillars and statues green with damp and neglect, ascended the "giant's steps," and found the warder waiting for us, with his enormous keys, at the door of a private passage. At the bottom of a staircase we entered a close gallery, from which the first range of cells opened. The doors were broken down, and the guide holding his torch in them for a moment in passing, showed us the same dismal interior in each--a mere cave, in which you would hardly think it possible to breathe, with a raised platform for a bed, and a small hole in the front wall to admit food and what air could find its way through from the narrow passage. There were eight of these; and descending another flight of damp steps, we came to a second range, differing only from the first in their slimy dampness. These are the cells of which Lord Byron gives a description in the notes to the fourth canto of Childe Harold. He has transcribed, if you remember, the inscription from the ceilings and walls of one which was occupied successively by the victims of the Inquisition. The letters are cut rudely enough, and must have been done entirely by feeling, as there is no possibility of the penetration of a ray of light. I copied them with some difficulty, forgetting that they were in print, and, comparing them afterward with my copy of Childe Harold, I found them exactly the same, and I refer you, therefore, to his notes. In a range of cells still below these, and almost suffocating from their closeness, one was shown us in which prisoners were strangled. The rope was passed through an iron grating of four bars, the executioner standing outside the cell. The prisoner within sat upon a stone, with his back to the grating, and the cord was passed round his neck, and drawn till he was choked. The wall of the cell was covered with blood, which had spattered against it with some violence. The guide explained it by saying, that owing to the narrowness of the passage the executioner had no room to draw the cord, and to expedite his business his assistant at the same time plunged a dagger into the neck of the victim. The blood had flowed widely over the wall, and ran to the floor in streams. With the darkness of the place, the difficulty I found in breathing, and the frightful reality of the scenes before me, I never had in my life a comparable sensation of horror.