Then, again, since they give the air a middle place between the fire above and the water beneath, how is it that we often find it between water and water, and between the water and the earth? For what do they make of those watery clouds, between which and the seas air is constantly found intervening? I should like to know by what weight and order of the elements it comes to pass that very violent and stormy torrents are suspended in the clouds above the earth before they rush along upon the earth under the air? In fine, why is it that throughout the whole globe the air is between the highest heaven and the earth, if its place is between the sky and the water, as the place of the water is between the sky and the earth?