"Within a few days he was being measured for his wings, not in the least like the elegant versions worn by the performers of Swan Lake. Instead of feathers there was a flexible membrane, and when he grasped the hand-holds attached to the supporting ribs, Poole realized that he must look much more like a bat than a bird.... For his first lessons he was restrained by a light harness, so that he did not move anywhere while he was taught the basic strokes - and, most important of all, learned control and stability. Like many acquired skills, it was not quite as easy as it looked. p.27"