Wilkins, John, A discovery of a new world : or a discourse tending to prove, that 'tis probable there may be another Habitable World in the Moon ; with a discourse concerning the Probability of a Passage thither; unto which is added, a discourse concerning a New Planet, tending to prove, that 'tis probable our earth is one of the Planets

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That the Earth may be a Planet.
If an equal force will caſt an heavy Bo-
dy but at an equal diſtance, whether or no
it move with, or againſt the motion of the
then may we eaſily conceive, that an
Arrow, or B@llet, being ſhot with the ſame
violence, will paſs but the ſame ſpace on the
Earth, whether or no it be ſhot towards the
Eaſt or Weſt.
If a heavy Body, while the Ship does move,
will fall down in a ſtreight Line;
then it is
not the Revol@tion of our Earth that can
hinder a perpendicular deſcent.
If a Man, leaping up in a Ship, may a-
bide in the Air one ſecond ſcruple of an hour,
and yet this Ship, in its greateſt ſwiftneſs,
not withdraw it ſelf fifteen foot;
then will
not the Earth, in that ſpace, go from him
almoſt a quarter of a mile.
But againſt this, ’tis Objected, That the
tract. 2.
cap. 2.
Earth has the ſimilitude of an open Ship, and
not of any Room that is cloſe.
And tho it
be true, that when the Roof and the Walls
do all move together, the Air which is in-
cluded betwixt them, muſt be carried along
by the ſame motion;
yet it is not ſo with
the Earth, becauſe that hath not any ſuch
Walls or Roof, wherein it may contain and
carry along with it the Medium.
And there-
fore Experience will rather argue againſt
this fuppoſed Revolution.
Thus ’tis ob-
ferved, that a Stone being let fall from the
Maſt of a Ship, that moves ſwiftly, will not
deſcend to the ſame point, as if the Ship
did ſtand ſtill.
From whence it will follow,

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