No sooner had the poor man heard the name bat, which recalled the humor he was suffering under, than he cried out at the top of his voice:--"He says true--he says true; the bat's the thing--the bat's the thing!" Then he turned to me and said, "Benvenuto, if one gave you the opportunity, should you have the heart to fly?" I said that if he would set me at liberty, I felt quite up to flying down to Prato, after making myself a pair of wings out of waxed linen. Thereupon he replied:--"I too should be prepared to take flight; but since the Pope has bidden me guard you as though you were his own eyes, and I know you a clever devil who would certainly escape, I shall now have you locked up with a hundred keys in order to prevent you slipping through my fingers." I then began to implore him, and remind him that I might have fled, but that on account of the word which I had given him I would never have betrayed his trust; therefore I begged him for the love of God, and by the kindness he had always shown me, not to add greater evils to the misery of my present situation. While I was pouring out these entreaties, he gave strict orders to have me bound and taken and locked up in prison. On seeing that it could not be helped, I told him before all his servants: "Lock me well up, and keep good watch on me; for I shall certainly contrive to escape." So they took me and confined me with the utmost care. I then began to deliberate upon the best way of making my escape. No sooner had I been locked in, than I went about exploring my prison; and when I thought I had discovered how to get out of it, I pondered the means of descending from the lofty keep, for so the great round central tower is called. I took those new sheets of mine, which, as I have said already, I had cut in strips and sewn together; then I reckoned up the quantity which would be sufficient for my purpose. Having made this estimate and put all things in order, I took out a pair of pincers which I had abstracted from a Savoyard belonging to the guard of the castle. This man superintended the casks and cisterns; he also amused himself with carpentering. Now he possessed several pairs of pincers, among which was one both big and heavy. I then, thinking it would suit my purpose, took it and hid it in my straw mattress. The time had now come for me to use it; so I began to try the nails which kept the hinges of my door in place. The door was double, and the clinching of the nails could not be seen; so that when I attempted to draw one out, I met with the greatest trouble; in the end however I succeeded. When I had drawn the first nail, I bethought me how to prevent its being noticed. For this purpose I mixed some rust, which I had scraped from old iron, with a little wax, obtaining exactly the same color as the heads of the long nails which I had extracted. Then I set myself to counterfeit these heads and place them on the holdfasts; for each nail I extracted I made a counterfeit in wax.