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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8876That the Moon may be a World. 1[Figure 1]
Suppoſe this Earth was A, which was to
move in the Circle C.
D. and let the Bullet
be ſuppos'd at B.
within its proper Verge; I
ſay, whether this Earth did ſtand ſtill or move
ſwiftly towards D.
yet the Bullet would ſtill
keep at the ſame diſtance by reaſon of that mag-
netick Vertue of the Centre (if I may ſo ſpeak)
whereby all things within its Sphere are attra-
cted with it.
So that the Violence to the bul-
let, being nothing elſe but that whereby ’tis
remov’d from its Centre, therefore an equal
violence can carry a Body from its proper place,
but at an equal diſtance, whether or no this
Earth where its Centre is, does ſtand ſtill or
move.
The Impartial Reader may find ſufficient ſa-
tisfaction for this, and ſuch other Arguments
as may be urg'd againſt the Motion of

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