THE middle of a fragrant afternoon of May in the green wilderness of Kentucky: the year 1795. High overhead ridges of many-peaked cloud-the gleaming, wandering Alps of the blue ether; outstretched far below, the warming bosom of the earth, throbbing with the hope of maternity. Two spirits abroad in the air, encountering each other and passing into one: the spirit of scentless spring left by melting snows and the spirit of scented summer born with...