No one knows when man first ventured from terra firma onto ice that was less firm, and began to slide. It must have been a very long time ago, for primitive skate blades made of animal bone have been dug up all over northern Europe, and there are references to skating in ancient runic poetry. There is even an official first topple, recorded in the fourteenth century, when a Netherlands lass named Lydwina fell on the frozen Schie one brisk day and rose to become the patron saint of skaters. (This account, to be sure, is compressed, leaving out the more spiritual events for which Lydwina achieved recognition from Rome.)