work in one position cramped me. Rasp, rasp ... I felt the bar vibrate like a violin string in the hand that held it. Rasp, rasp, rasp ... and a puff of wind from the outside blew the iron dust into my mouth and eyes. What cared I for that? Rasp, rasp, rasp ... and the top of the bar was cut so thin that I could break it through. I gripped the file in my teeth and, seizing the stanchion high up with both my hands, threw all my weight upon it. It bent just above its base, but did not break, and where its iron fibres were at tensest strain in the bottom of the groove which I had already cut, I set the file to work once more. The iron gave like crumbling bread before the teeth of the file, till the bar was so thin that with one hand I could bend it in whichever direction I pleased. One strong pull towards me, one mighty thrust outwards, and the stanchion broke with a snap so sudden that the hand which held it shot out through the window. I steadied myself with my left hand on the inner edge of the sill; then I dropped down on tip-toe and seized the rope. As I did so, my fingers touched the volume which had brought me to safety. Breaking the string which bound it, I slipped it into my pocket. It would never do to leave it, neither would it do to leave behind me the disguise I had worn. I gathered up the bundle and tied it tightly about with the cord, the end of which I took in my teeth. Then with the rope round my neck I swarmed up the wall to the window. To my joy, when I reached it, I found that in my efforts to break the bar I had bent the lower end inwards. The stump, thus curved, would give a securer hold to the rope upon which I was about to trust myself. It seemed hardly strong enough to bear my weight, but its length was ample, far greater than I should need. So I doubled it over the stump of the stanchion and having passed it out over the sill, began to worm myself through the window. Slowly and painfully I pushed my way through, and at last my head and the upper part of my body were beyond the aperture. I bent forward, gripping the rope as far off as my arms could reach, and throwing my weight down upon my hands so that the rope was taut, I wriggled myself through until I felt my toes were touching the inner edge of the sill.