Our yard in Jamaica Plain, I'm told, was filled years ago with soil trucked in from coal yards in Brookline. It's bad soil, so we plant our veggies in raised beds filled with organic soil and compost. The bad soil still holds nuggets of coal, which emerge in the spring or after a hard rain. The bright spot, though, is that the soil also harbors these little treasures - shards of broken pottery and china which I collect and save. I'll find some use for it one of these days. My favorites are the very tiniest ones. I think I prefer the small suggestion of the overall pattern - it frees me to imagine what's not there. The mystery, the unknown, is more enticing than the whole story laid at your feet.