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="143" file="0155" n="155" rhead="That the Moon may be a World."/>
            militude in their Natures, for which Philoſo-
              <lb/>
            phy as yet has not found a particular Name.
              <lb/>
            </s>
            <s xml:id="echoid-s2083" xml:space="preserve">The latter does ariſe from that peculiar quali-
              <lb/>
            ty, whereby the Earth is properly diſtinguiſh-
              <lb/>
            ed from the other Elements, which is its con-
              <lb/>
            denſity. </s>
            <s xml:id="echoid-s2084" xml:space="preserve">Of which the more any thing does
              <lb/>
            participate, by ſo much the ſtronger will be
              <lb/>
            the deſire of Union to it. </s>
            <s xml:id="echoid-s2085" xml:space="preserve">So Gold and
              <lb/>
            other Metals, which are moſt cloſe in their
              <lb/>
            Compoſition, are likewiſe moſt ſwiſt in their
              <lb/>
            motion of deſcent.</s>
            <s xml:id="echoid-s2086" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2087" xml:space="preserve">And tho’ this may ſeem to be contradicted
              <lb/>
            by the inſtance of Metals, which are of the
              <lb/>
            ſame weight, when they are melted, and when
              <lb/>
            they are hard: </s>
            <s xml:id="echoid-s2088" xml:space="preserve">As alſo of Water, which does
              <lb/>
            not differ in reſpect of Gravity, when it is
              <lb/>
            frozen, and when it is Fluid: </s>
            <s xml:id="echoid-s2089" xml:space="preserve">yet we muſt
              <lb/>
            know, that Mettals are not rarified by melting,
              <lb/>
            but mollified. </s>
            <s xml:id="echoid-s2090" xml:space="preserve">And ſo too, for frozen Wa-
              <lb/>
            ters, they are not properly condenſed, but con-
              <lb/>
            gealed into a harder ſubſtance, the parts being
              <lb/>
            not contracted cloſer together, but ſtill poſſeſ-
              <lb/>
            ſing the ſame Extention. </s>
            <s xml:id="echoid-s2091" xml:space="preserve">But yet (I ſay) ’tis
              <lb/>
            very probable, that there is ſuch a Sphere
              <lb/>
            about the Earth, which does terminate its
              <lb/>
            power of attracting other things unto it. </s>
            <s xml:id="echoid-s2092" xml:space="preserve">So
              <lb/>
            that ſuppoſe a Body to be placed within the li-
              <lb/>
            mits of this Sphere, and then it muſt needs
              <lb/>
            tend downwards, towards the Centre of it.
              <lb/>
            </s>
            <s xml:id="echoid-s2093" xml:space="preserve">But on the contrary, if it be beyond this com-
              <lb/>
            paſs, then there can be no ſuch mutual Attra-
              <lb/>
            ction; </s>
            <s xml:id="echoid-s2094" xml:space="preserve">and ſo conſequently, it muſt reſt im-
              <lb/>
            moveable from any tuch motion.</s>
            <s xml:id="echoid-s2095" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2096" xml:space="preserve">For the farther confirmation of this, I ſhall
              <lb/>
            propoſe two pertinent Obſervations.</s>
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