When the moon shall have faded out from the sky, and the sun shall shine at noonday a dull cherry red, and the seas shall be frozen over, and the icecap shall have crept downward to the equator from either pole . . . when all the cities shall have long been dead and crumbled into dust, and all life shall be on the last verge of extinction on this globe; then, on a bit of lichen, growing on the bald rocks beside the eternal snows of Panama, shall be seated a tiny insect, preening its antennae in the glow of the worn-out sun, the sole survivor of animal life on this our earth - a melancholy bug.