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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        <div xml:id="echoid-div127" type="section" level="1" n="38">
          <p>
            <s xml:id="echoid-s1408" xml:space="preserve">
              <pb o="96" file="0108" n="108" rhead="That the Moon may be a World."/>
            direct Rays may eaſily penetrate.</s>
            <s xml:id="echoid-s1409" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1410" xml:space="preserve">But ſome may object, that this will not
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            conſiſt with that which was before deliver'd,
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            where I ſaid, that the thinneſt parts had leaſt
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            Light.</s>
            <s xml:id="echoid-s1411" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1412" xml:space="preserve">If this were true, how comes it to paſs then
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            that this Air ſhould be as light as any of the
              <lb/>
            other parts, when as ’tis the thinneſt of all?</s>
            <s xml:id="echoid-s1413" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1414" xml:space="preserve">I anſwer, if the Light be receiv'd by Re-
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            flexion only, then the thickeſt Body hath moſt,
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            becauſe it is beſt able to beat back the Rays;
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            </s>
            <s xml:id="echoid-s1415" xml:space="preserve">but if the Light be receiv'd by Illumination
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            (eſpecially if there be an Opacous Body be-
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            hind, which may double the Beams by Reſlecti-
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            on) as it is here, then I deny not but a thin
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            Body may retain much Light, and perhaps,
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            ſome of thoſe Appearances which we take
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            for Fiery Comets, are nothing elſe but a bright
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            Cloud enlightned; </s>
            <s xml:id="echoid-s1416" xml:space="preserve">ſo that probable it is, there
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            may be ſuch Air about the Moon; </s>
            <s xml:id="echoid-s1417" xml:space="preserve">and hence
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            it comes to paſs, that the greater Spots are
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            only viſible towards her middle parts, and
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            none near the Circumference; </s>
            <s xml:id="echoid-s1418" xml:space="preserve">not, but that
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            there are ſome, as well in thoſe parts, as elſe-
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            where, but they are not there perceivable, by
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            reaſon of thoſe brighter Vapours which hide
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            them.</s>
            <s xml:id="echoid-s1419" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div131" type="section" level="1" n="39">
          <head xml:id="echoid-head50" xml:space="preserve">PROP. XI.</head>
          <head xml:id="echoid-head51" style="it" xml:space="preserve">That as their World is our Moon, ſo our World is
            <lb/>
          their Moon.</head>
          <p>
            <s xml:id="echoid-s1420" xml:space="preserve">I Have already handled the firſt thing that I
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            Promiſed, according to the Method </s>
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