Woke up one morning and it was spring. It happens like that. Suddenly forsythia. No mittens required. Where I live, spring, like autumn, paints the town long before it gets around to coloring the woods. But I know where to get my blues and greens. The first March day in which the mud is manageable and only a jacket is required, I make my way to an Ozark spring. Everything about the ecosystem of a big Ozark spring represents rebirth: pristine water bubbling up through the filt