d above, by main force
it presses the thunderbolt downwards contrary to Nature.

And neither amber nor the loadstone draws anything to it which is near,
nor does anything spontaneously approach them. But this stone emits
strong exhalations, by which the surrounding air being impelled forceth
that which is before it; and this being drawn round in the circle, and
returning into the vacuated place, forcibly draws the iron in the same
movement. In amber there is a flammeous and spirituous nature, and this
by rubbing on the surface is emitted by recluse passages, and does the
same that the loadstone does. It also draws the lightest and driest of
adjacent bodies, by reason of their tenuity and weakness; for it is not
so strong nor so endued with weight and strength as to force much air
and to act with violence and to have power over great bodies, as the
magnet has. But what is the reason the air never draws a stone, nor
wood, but iron only, to the loadstone? This is a common question both by
those who think the coition of these bodies is made by the attraction
of the loadstone, and by such as think it done by the incitement of the
iron. Iron is neither so rare as wood, nor altogether so solid as
gold or a stone; but has certain pores and asperities, which as far as
inequality is concerned are proportionable to the air; and the air being
received in certain positions, and having (as it were) certain stays to
hang to, does not slip off; but when it is carried up to the stone and
is forced against it, it draws the iron by force along with it to the
stone. Such then may be the reason of this.

But the manner of the waters running over the earth is not so evident.
But it is observable that the waters of lakes and ponds stand immovable,
because the air about them stagnates immovable and admits of no
vacuity. For the water on the surface of lakes and seas is troubled and
fluctuates as the air is moved, it following the motion of the air, and
moving as it is moved. For the force from below causes the hollowness of
the wave, and from above the swelling thereof; until the air ambient
and containing the water is still. Therefore the flux of such waters as
follow the motion of the receding air, and are impelled by that which
presses behind, is continued without end. And this is the reason that
the stream increases with the waters, and is slow where the water is
weak, the air not giving way, and therefore enduring less reaction.
So the w