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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[31.] Necnon Oceano paſci phæbumque polumq; Gredimus.
[32.] PROP. IV. That the Moon is a Solid, Compacted, Opacous Body.
[33.] PROP. V. That the Moon hath not any Light of her own.
[34.] PROP. VI. That there is a World in the Moon, bath been the direct Opinion of many Ancient, with ſome Modern Mathematicians, and may probably de deduc’d from the Tenents of others.
[35.] PROP. VII. That thoſe Spots and brighter parts, which by our ſight may be diſtinguiſhed in the Moon, do ſhew the difference betwixt the Sea and Land, in that other World.
[36.] PROP. VIII. The Spots repeſent the Sea, and the brighter parts the Land.
[37.] PROP. IX. That there are high Mountains, deep Vallies, and ſpacious Plains in the Body of the Moon.
[38.] PROP. X. That there is an Atmo-ſphæra, or an Orb of groſs, Vaporous Air, immediately encompaſſing the body of the Moon.
[39.] PROP. XI. That as their World is our Moon, ſo our World is their Moon.
[40.] Provehimur portu, terræque urbeſque recedunt.
[41.] PROP. XII.
[42.] PROP. XIII.
[43.] PROP. XIV.
[44.] FINIS.
[45.] A DISCOURSE Concerning a Rem Planet. Tending to prove That ’tis probable our EARTH is one of the PLANETS. The Second Book. By John Wilkins, late L. Biſhop of Cheſter.
[46.] LONDON: Printed by J. D. for John Gellibrand, at the Golden Ball in St. Paul’s Church-Yard. M.DC.LXXXIV.
[47.] To the Reader.
[48.] PROP. I.
[49.] PROP. II.
[50.] PROP. III.
[51.] PROP. IV.
[52.] PROP. V.
[53.] PROP. VI.
[54.] PROP. VII. PROP. VIII. PROP. IX. PROP. X.
[55.] That the EARTH May be a PLANET. PROP. I.
[56.] PROP. II.
[57.] PROP. III.
[58.] PROP. IV.
[59.] PROP. V. That the Scripture, in its proper conſtru-ction, does not any where affirm the Immobility of the Earth.
[60.] PROP. VI. That there is not any Argument from the Words of Scripture, Principles of Na-ture, or Obſervations in Aſtronomy, which can ſuſſiciently evidence the Earth to be in the Gentre of the Uni-verſe.
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159147That the Moon may be a World.
1. When a Man is in the bottom of a deep
River, tho’ he have over him a multitude of
heavy Waters, yet he is not burdened with
the weight of them.
And though another Bo-
dy, that ſhould be but of an equal Gravity,
with theſe Waters, when they are taken out,
would be heavy enough to preſs him to death;
yet notwithſtanding whilſt they are in the
Channel, they do not in the leaſt manner cruſh
him with their Load.
The reaſon is, becauſe
they are both in their right places;
and ’tis
proper for the Man being the more condenſed
Body, to be lower than the Waters.
or ra-
ther thus, becauſe the body of the Man does
more nearly agree with the Earth, in this affe-
ction, which is the ground of its attraction,
and therefore doth more ſtrongly attract it,
than the waters that are over it.
Now, as in
ſuch a caſe, a body may loſe the Operation
of its Gravity, which is, to move, or to preſs
downwards:
So may it likewiſe, when it is
ſo far out of its place, that this attractive
Power cannot reach unto it.
’Tis a pretty Notion to this purpoſe, menti-
oned by Albertus de Saxonia, and out of him
11Phyſ. l. 3.
Q. 6. art. 2.
by Francis Mendoca;
that the Air is in ſome
22Viridar.
l. 4. Prob.
47.
part of it Navigable.
And that upon this Sta-
tick Principle;
any Braſs or Iron Veſſel (ſup-
poſe a Kettle) whoſe ſubſtance is much hea-
vier than that of the Water, yet being filled
33Vide Arch.
l. de inſi-
dentibus.
bumido.
with the lighter Air, it will ſwim upon it, and
not ſink.
So ſuppoſe a Cup, or Wooden Veſ-
ſel, upon the outward borders of this Elemen-
tary Air, the Cavity of it being filled with
Fire, or rather Æthereal Air, it muſt

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