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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              <pb o="90" file="0102" n="102" rhead="That the Moon may be a World."/>
            Aggregate of the quadrate from A B a
              <lb/>
            Hundred, and B G a 1000. </s>
            <s xml:id="echoid-s1303" xml:space="preserve">will be 1010000.
              <lb/>
            </s>
            <s xml:id="echoid-s1304" xml:space="preserve">unto which the Quadrat ariſing from A G
              <lb/>
            muſt be equal; </s>
            <s xml:id="echoid-s1305" xml:space="preserve">according to the 47th Propoſi-
              <lb/>
            tion in the ſirſt Book of Elements. </s>
            <s xml:id="echoid-s1306" xml:space="preserve">There-
              <lb/>
            fore the whole Line A G is ſomewhat more
              <lb/>
            than 104. </s>
            <s xml:id="echoid-s1307" xml:space="preserve">and the diſtance betwixt H A muſt
              <lb/>
            be above four Miles, which was the thing to
              <lb/>
            be prov'd.</s>
            <s xml:id="echoid-s1308" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1309" xml:space="preserve">But it may be again Objected, if there be
              <lb/>
            ſuch rugged parts, and ſo high Mountains, why
              <lb/>
            then cannot we diſcern them at this diſtance ?
              <lb/>
            </s>
            <s xml:id="echoid-s1310" xml:space="preserve">why doth the Moon appear unto us ſo exactly
              <lb/>
            round, and not rather as a Wheel with Teeth.</s>
            <s xml:id="echoid-s1311" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s1312" xml:space="preserve">I anſwer, by reaſon of too great a diſtance;
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            </s>
            <s xml:id="echoid-s1313" xml:space="preserve">For if the whole Body appear to our Eye ſo
              <lb/>
            little, then thoſe parts which bear ſo ſmall a
              <lb/>
            proportion to the whole, will not at all be ſen-
              <lb/>
            ſible.</s>
            <s xml:id="echoid-s1314" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1315" xml:space="preserve">But it may be replyed, if there were any
              <lb/>
            ſuch remarkable Hills, why does not the Limb
              <lb/>
            of the Moon appear like a Wheel with Teeth,
              <lb/>
            to thoſe who look upon it through the great
              <lb/>
            Perſpective, on whoſe Witneſs you ſo much
              <lb/>
            depend? </s>
            <s xml:id="echoid-s1316" xml:space="preserve">Or what reaſon is there that ſhe ap-
              <lb/>
            pears as exactly round through it, as ſhe doth
              <lb/>
            to the bare Eye? </s>
            <s xml:id="echoid-s1317" xml:space="preserve">Certainly then, either there
              <lb/>
            is no ſuch thing as you imagin, or elſe the
              <lb/>
            Glaſs fails much in this Diſcovery.</s>
            <s xml:id="echoid-s1318" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1319" xml:space="preserve">To this I ſhall anſwer out of Galilæus.</s>
            <s xml:id="echoid-s1320" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s1321" xml:space="preserve">1. </s>
            <s xml:id="echoid-s1322" xml:space="preserve">You muſt know that there is not meer-
              <lb/>
            ly one rank of Mountains about the edge of
              <lb/>
            the Moon, but divers Orders, one Mountain
              <lb/>
            behind another, and ſo there is ſomewhat to
              <lb/>
            hinder thoſe void ſpaces, which otherwiſe, per-
              <lb/>
            haps, might appear.</s>
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