'At last I hit upon a device. I told Laurent that on Michaelmas Day I wanted two dishes of macaroni, and one of these must be the largest dish he had, for I meant to season it, and send it, with my compliments, to the worthy gentleman who had lent me books. Laurent would bring me the butter and the Parmesan cheese, but I myself should add them to the boiling macaroni. 'I wrote to the monk preparing him for what was to happen, and on St. Michael's Day all came about as I expected. I had hidden the bolt in the great Bible, wrapped in paper, one inch of it showing on each side. I prepared the cheese and butter; and in due time Laurent brought me in the boiling macaroni and the great dish. Mixing my ingredients, I filled the dish so full that the butter nearly ran over the edge, and then I placed it carefully on the Bible, and put that, with the dish resting on it, into Laurent's hand, warning him not to spill a drop. All his caution was necessary: he went away with his eyes fixed on his burden, lest the butter should run over; and the Bible, with the bolt projecting from it, were covered, and more than covered, by the huge dish. His one care was to hold that steady, and I saw that I had succeeded. Presently he came back to tell me that not a drop of butter had been spilt.' Father Balbi next began his work, detaching from the roof one large picture, which he regularly put back in the same place to conceal the hole. In eight days he had made his way through the roof, and attacked the wall. This was harder work, but at last he had removed six and twenty bricks, and could pass through to Casanova's roof. This he was obliged to work at very carefully, lest any fracture should appear visible below. One Monday, as Father Balbi was busy at the roof, Casanova suddenly heard the sound of opening doors. It was a terrible moment, but he had time to give the alarm signal, two quick blows on the ceiling. Then Laurent entered, bringing another prisoner, an ugly, ill-dressed little man of fifty, in a black wig, who looked like what he was, a spy of the Inquisition. Casanova soon learned the history of Soradici--for this was the spy's name--and when his new companion was asleep he wrote to Balbi the account of what had happened. For the present, evidently the work must be given up, no confidence whatever could be placed in Soradici. Yet soon Casanova thought of a plan of making use even of this traitor.