After dark I bethought myself that I had forgotten to bring in my notebook, and recalled that I had left it on the pile of dirt beside the grave, and so, guiding my steps by the flickering flashes of lightning from an approaching thunder-shower, I made my way thither. I remember that I had found the book and had just turned back toward the camp, holding out my hand to feel the first splashes of rain, when a blinding flash and a violent concussion sent me reeling, reeling, down,—into darkness....