Chap. CCCXXI.—Of those Objects which the Eyes perceive through a Mist or thick Air.
The nearer the air is to water, or to the ground, the thicker it becomes. It is proved by the nineteenth proposition of the second book[1], that bodies rise in proportion to their weight; and it follows, that a light body will rise higher than another which is heavy.
- ↑ This proposition, though undoubtedly intended to form a part of some future work, which never was drawn up, makes no part of the present.