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

Table of contents

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[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.]
[61. PROP. VII. Tis probable that the Sun is in the Gentre of the World.]
[62. PROP. VIII. That there is not any ſufficient reaſon to prove the Earth incapable of thoſe mo-tions which Copernicus aſcribes un-to it.]
[63. Provebimur portu, terræque, verbeſq; recedunt.]
[64. PROP. IX. That it is more probable the Earth does move, than the Sun or Heavens.]
[65. PROP. X. That this Hypotheſis is exactly agreeable to common appearances.]
[66. Quicunq; ſolam mente præcipiti petit]
[67. Brevem replere non valentis ambitum, # Pudebit aucti nominis.]
[68. FINIS.]
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That the Moon may be a World.
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              <pb o="39" file="0051" n="51" rhead="That the Moon may be a World."/>
            agreed on by the General Conſent of the moſt,
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            and the beſt Philoſophers.</s>
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          <p>
            <s xml:space="preserve">1. </s>
            <s xml:space="preserve">It is Solid, in Opoſition to Fluid, as is the
              <lb/>
            Air; </s>
            <s xml:space="preserve">for how otherwiſe could it beat back
              <lb/>
            the Light which it receives from the Sun?</s>
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          </p>
          <p>
            <s xml:space="preserve">But here it may be Queſtioned, whether
              <lb/>
            or no the Moon beſtow her light upon us, by
              <lb/>
            the Reflection of the Sun-beams from the Su-
              <lb/>
            perficies of her Body, or elſe by her own illu-
              <lb/>
            mination? </s>
            <s xml:space="preserve">Some there are who affirm this
              <lb/>
              <anchor type="note" xlink:label="note-0051-01a" xlink:href="note-0051-01"/>
            latter part. </s>
            <s xml:space="preserve">So (a) Averroes, (b) Gælius Rho-
              <lb/>
            diginus, (c) Fulius Gæſar &</s>
            <s xml:space="preserve">c. </s>
            <s xml:space="preserve">And their Rea-
              <lb/>
            ſon is, becauſe this Light is diſcern'd in many
              <lb/>
            Places, whereas thoſe Bodies which give
              <lb/>
            Light by Reflexion, can there only be percei-
              <lb/>
            ved where the Angel of Reflexion is Equal
              <lb/>
            to the Angel of Incidence, and this is only in
              <lb/>
            one place, as in a Looking Glaſs, thoſe Beams
              <lb/>
            which are reflected from it, cannot be percei-
              <lb/>
            ved in every place where you may ſee the
              <lb/>
            Glaſs, but only there where your Eye is pla-
              <lb/>
            ced on the ſame Line whereon the Beams are
              <lb/>
            Reſlected.</s>
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            <note position="right" xlink:label="note-0051-01" xlink:href="note-0051-01a" xml:space="preserve">a De Cælo
              <lb/>
            l. 2.com.49.
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            b Ante le-
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            ction.li. 20.
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            c. 4.
              <lb/>
            c De pbæ-
              <lb/>
            nom. Lunæ
              <lb/>
            c. II.</note>
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          <p>
            <s xml:space="preserve">But to this I anſwer, That the Argument
              <lb/>
            will not hold of ſuch Bodies, whoſe Superfi-
              <lb/>
            cies, is full of Unequal parts and Giboſities
              <lb/>
            as the Moon is. </s>
            <s xml:space="preserve">Wherefore ’tis as well the
              <lb/>
            more probable, as the more common Opini-
              <lb/>
            on, that her Light proceeds from both theſe
              <lb/>
            Cauſes, from Reflexion and Illumination;
              <lb/>
            </s>
            <s xml:space="preserve">nor doth it herein differ from our Earth, ſince
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            that alſo hath ſome Light by Illumination: </s>
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              <lb/>
            for how otherwiſe would the Parts about us
              <lb/>
            in a Sun-ſhine Day appear ſo Bright, when as
              <lb/>
            the Rays of Reflexion cannot Enter into our
              <lb/>
            Eye?</s>
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