769 | 770 | 771 | 772 | 773 |
1 | 306 | 613 | 919 | 1225 |
of that which is included. We see that the sphere of the waters
varies conspicuously in mass from the surface to the bottom, and
that, far from investing the earth when that was in the form of a
cube that is of 8 angles as Plato will have it, that it invests the
earth which has innumerable angles of rock covered by the water and
various prominences and concavities, and yet no vacuum is generated
between the earth and water; again, the air invests the sphere of
waters together with the mountains and valleys, which rise above
that sphere, and no vacuum remains between the earth and the air, so
that any one who says a vacuum is generated, speaks foolishly.
But to Plato I would reply that the surface of the figures which
according to him the elements would have, could not exist.
That the flow of rivers proves the slope of the land.
9
40.
PROVES HOW THE EARTH IS NOT GLOBULAR AND NOT BEING GLOBULAR
CANNOT
HAVE A COMMON CENTRE.
We see the Nile come from Southern regions and traverse various
provinces, running towards the North for a distance of 3000 miles
and flow into the Mediterranean by the shores of Egypt; and if we
will give to this a fall of ten braccia a mile, as is usually
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