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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[21. The Firſt Book. That the MOON May be a WORLD. The Firſt Propoſition, by way of Preface.]
[22. Sed vanus ſtolidis hæc omnia finxerit Error.]
[23. Solis lunæq; labores.]
[24. Cum fruſtra reſonant æra auxiliaria Lunæ.]
[25. Una laboranti poterit ſuccerrere Lunæ.]
[26. Gantus & è cælo poſſunt deducere Lunam.]
[27. Cantus & ſi curru lunam deducere tentant, Et facerent, ſi non æra repulſa ſonant.]
[28. PROP. II. That a Plurality of Worlds doth not contradict any Principle of Reaſon or Faith.]
[29. Æſtuas infelix auguſto limite mundi.]
[30. PROP. III. That the Heavens do not conſiſt of any ſuch pure Matter, which can priviledge them from the like Change and Corruption, as theſe Inferiour, Bodies are liable unto.]
[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.]
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That the Moon may be a World.
only one ſmall part of her Body enlightned,
then the Earth B will have ſuch a part of its
viſible Hemiſphere darkned, as is proportio-
nable to that part of the Moon which is en-
and as for ſo much of the Moon, as
the Sun-Beams cannot reach unto, it receives
Light from a proportional part of the Earth
which ſhines upon it, as you may plainly per-
ceive by the Figure.
You ſee then that Agreement and Simili-
tude which there is betwixt our Earth and the
Now the greateſt difference which
makes them unlike, is this, that the Moon en-
lightens our Earth round about, whereas our
Earth gives Light to that Hemiſphere of the
Moon which is viſible unto us, as may be cer-
tainly gather’d from the conſtant appearance
of the ſame ſpots, which could not thus come
to paſs, if the Moon had ſuch a Diurnal mo-
tion about its own Axis, as perhaps our
Earth hath.
And though ſome ſuppoſe her
to move in an Epicycle, yet this doth not ſo
turn her Body round, that we may diſcern
both Hemiſpheres;
for according to that Hy-
potheſis (ſay they) the Motion of her Eccen-
centrick doth turn her Face towards us, as
much as the other doth from us.
But now, if any Queſtion what they do for
a Moon who live in the upper part of her Bo-
I anſwer, the ſolving of this, is the moſt
uncertain and difficult thing that I know of,
concerning this whole matter.
But yet unto me
this ſeems a probable Conjecture.
That the upper Hemiſphere of the Moon
doth receive a ſufficient Light from thoſe Pla-

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