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But since water encompasses the earth, and man is not an
aquatic, but a land-animal, living in the air, and           much light,
Providence formed many eminences and cavities in the earth, so that
these cavities should receive the whole or a great part of the water
which covers the land beneath it; and that the eminences should rise and
conceal the water beneath them, except so much as was necessary for the
use of the human race, the animals and plants about it.