Skipping stones

On the way back home from my grandmother's funeral two years ago, we stopped at the Millersburg ferry crossing on the Susquehanna and skipped stones. There's an art to picking the right kind of stone--smooth, round, flat, not too small, not to heavy. And there's an art to skipping the stone--three, four, five clips in a wide arc before it slices beneath the surface. Of course, the North American Stone Skipping Association explains that it's also a science.