My arms and legs were helpless, but surely I could still roll . Slowly and awkwardly, I set myself in motion. It was not easy. Besides being extremely painful, since I could not guard my face with my arms, it was also exceedingly difficult to keep any particular direction.

I tended to roll in every direction except the one I wanted to go. In the end, however, I came right up against my objective. It almost touched my bound hands.

Even then it was not easy. It took an infinity of time before I could wriggle the glass into such a position, wedged against the wall, that it would rub up and down on my bonds. It was a long heartrending process, and I almost despaired, but in the end I succeeded in sawing through the cords that bound my wrists. The rest was a matter of time. Once I had restored the circulation to my hands by rubbing the wrists vigorously, I was able to undo the gag. One or two full breaths did a lot for me.