If life depended upon air, and if it ended with the passing of that air from the body, it would then mingle with the eternal air like a portion of water passing into the great sea and thereby only changing the place of its residence. If a quantity of water be thrown into a well, or if the flame of a lamp be thrown into a burning fire, either of them, entering the original element, loses its independent existence. If life were air, it also, when the animal died, would merge in the great sea of air outside.