5. The formation of clouds by the evaporation of the waters of the Earth was then equally unknown. They did not suspect that the rain which falls from the sky arose in vapor from the Earth; for they did not see the water arise. Whence the belief in large and small bodies of water from celestial and terrestrial sources, from reservoirs situated in lofty regions, — a supposition which accorded perfectly with the idea of a solid vault capable of maintaining them. The larger bodies of water, escaping through fissures in the sky, fell in rain; and the rain fell gently or came in torrents, according to the size of these openings.