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 Moon may be a World.
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              <pb o="87" file="0099" n="99" rhead="That the Moon may be a World."/>
            and the Sun on the other ſide of her, then like-
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            wiſe may we Diſcover theſe brighter Parts
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            caſting their ſhadows Weſtward. </s>
            <s xml:space="preserve">Whereas in
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            the full Moon there are none of all theſe to be
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            feen.</s>
            <s xml:space="preserve"/>
          </p>
          <div type="float" level="2" n="7">
            <note position="left" xlink:label="note-0098-01" xlink:href="note-0098-01a" xml:space="preserve">Syſt. mundi
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            eoll. 1.</note>
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          <p>
            <s xml:space="preserve">But it may be Objected, that ’tis almoſt Im-
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            poſſible, and altogether Unlikely, that in the
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            Moon there ſhould be any Mountains ſo high,
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            as thoſe Obſervations make them. </s>
            <s xml:space="preserve">For do but
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            Suppoſe, according to the common Principles,
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            that the Moons Diameter unto the Earths, is
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            very neer to the Proportion of 2 to 7. </s>
            <s xml:space="preserve">Suppoſe
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            withall that theEarthsDiameter contains about
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            7000. </s>
            <s xml:space="preserve">Italian Miles, and the Moons 2000. </s>
            <s xml:space="preserve">(as is
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            commonly granted.) </s>
            <s xml:space="preserve">Now Galilæus hath Ob-
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            ſerved, that ſome parts have been Enlightned,
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            when they were the Twentieth part of the Di-
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            ameter diſtant from the common term of Illu-
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            mination. </s>
            <s xml:space="preserve">From whence, it muſt neceſſarily
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            follow, that there may be ſome Mountains in
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            the Moon, ſo high, that they are Able to caſt a
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            ſhadow a 100 Miles off. </s>
            <s xml:space="preserve">An opinion that ſounds
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            like a Prodigy or a Fiction, wherefore ’tis likely
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            that either thoſe Appearances are cauſed by
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            ſomewhat elſe beſides Mountains, or elſe thoſe
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            are fallibleObſervations, from whence may fol-
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            low ſuch Improbable, Inconceiveable Conſe-
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            quences.</s>
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          </p>
          <p>
            <s xml:space="preserve">But to this I anſwer:</s>
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          </p>
          <p>
            <s xml:space="preserve">1. </s>
            <s xml:space="preserve">You muſt Conſider the height of the
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            Mountains is but very little, if you compare
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            them to the Length of their ſhadows. </s>
            <s xml:space="preserve">Sir Walter
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              <anchor type="note" xlink:label="note-0099-01a" xlink:href="note-0099-01"/>
            Rawleigh Obſerves, that the Mount Atbos, now
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            called Lacas, caſt its ſhadow 300 Furlongs, which
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            is above 37 Miles; </s>
            <s xml:space="preserve">and yet that Mount is none</s>
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