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

Page concordance

< >
Scan Original
221 41
222 42
223 43
224 44
225 45
226 46
227 47
228 48
229 49
230 50
231 51
232 52
233 53
234 54
235 55
236 56
237 57
238 58
239 59
240 60
241 61
242 62
243 63
244 64
245 65
246 66
247 67
248 68
249 69
250 70
< >
page |< < (141) of 370 > >|
    <echo version="1.0RC">
      <text xml:lang="en" type="free">
        <div xml:id="echoid-div155" type="section" level="1" n="43">
          <p>
            <s xml:id="echoid-s2052" xml:space="preserve">
              <pb o="141" file="0153" n="153" rhead="That the Moon may be a World."/>
            this Orb of vaporous Air, it might there reſt
              <lb/>
            immovable, and would not have in it any pro-
              <lb/>
            penſion to this motion of Deſcent.</s>
            <s xml:id="echoid-s2053" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2054" xml:space="preserve">For the better illuſtration of this, you muſt
              <lb/>
            know, that the heavineſs of a body, or (as
              <lb/>
              <note position="right" xlink:label="note-0153-01" xlink:href="note-0153-01a" xml:space="preserve">De cælo
                <lb/>
              lib.4.cap.1.</note>
            Ariſtotle defines it) the proneneſs of it to tend
              <lb/>
            down unto ſome Centre, is not any abſolute
              <lb/>
            quality intrinſical unto it, as if, whereever the
              <lb/>
            body did retain its Eſſence, it muſt alſo retain
              <lb/>
            this quality: </s>
            <s xml:id="echoid-s2055" xml:space="preserve">or as if Nature had emplanted in
              <lb/>
            every condenſed Body Appetitionem centri, & </s>
            <s xml:id="echoid-s2056" xml:space="preserve">
              <lb/>
            fugam extremitatis. </s>
            <s xml:id="echoid-s2057" xml:space="preserve">Such a Love to the Cen-
              <lb/>
            tre, and hatred to the Extremities. </s>
            <s xml:id="echoid-s2058" xml:space="preserve">Becauſe
              <lb/>
            one of theſe being leſs than a quantity, and the
              <lb/>
            other no more, cannot have any power of At-
              <lb/>
            traction or Diſpulſion in them. </s>
            <s xml:id="echoid-s2059" xml:space="preserve">According to
              <lb/>
            that common principle, Quantitatis nulla eſt
              <lb/>
            efficacia.</s>
            <s xml:id="echoid-s2060" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2061" xml:space="preserve">But now the true nature of Gravity is this.
              <lb/>
            </s>
            <s xml:id="echoid-s2062" xml:space="preserve">
              <note position="right" xlink:label="note-0153-02" xlink:href="note-0153-02a" xml:space="preserve">A magne-
                <lb/>
              tical natu-
                <lb/>
              ral axtra-
                <lb/>
              ction.
                <lb/>
              So Keplar
                <lb/>
              Somn.
                <lb/>
              Aſtron. N.
                <lb/>
              66.
                <lb/>
              Coper. l. 1.
                <lb/>
              cap. 26.
                <lb/>
              Foſcarin in
                <lb/>
              epiſt. ad
                <lb/>
              Sebaſt.
                <lb/>
              Fantonum.</note>
            ’Tis ſuch a reſpective mutual deſire of Union,
              <lb/>
            whereby condenſed Bodies, when they come
              <lb/>
            within the Sphere of their own Vigour, do
              <lb/>
            naturally apply themſelves, one to another by
              <lb/>
            Attraction or Coition. </s>
            <s xml:id="echoid-s2063" xml:space="preserve">But being both with-
              <lb/>
            out the reach of eithers Virtue, they can ceaſe
              <lb/>
            to move, and though they have general Apti-
              <lb/>
            tude, yet they have not any preſent Inclinati-
              <lb/>
            on or proneneſs to one another. </s>
            <s xml:id="echoid-s2064" xml:space="preserve">And ſo con-
              <lb/>
            ſequently, cannot be ſtiled heavy.</s>
            <s xml:id="echoid-s2065" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2066" xml:space="preserve">The meaning of this will be clearly Illuſtra-
              <lb/>
            ted by a Simtlitude. </s>
            <s xml:id="echoid-s2067" xml:space="preserve">As any light Body
              <lb/>
            (ſuppoſe the Sun) does ſend forth his Beams
              <lb/>
            in an orbicular form; </s>
            <s xml:id="echoid-s2068" xml:space="preserve">ſo likewiſe any magneti-
              <lb/>
            cal Body, for inſtance, a round Load-ſtone does
              <lb/>
              <note position="right" xlink:label="note-0153-03" xlink:href="note-0153-03a" xml:space="preserve">Gilbert de
                <lb/>
              Maguete.
                <lb/>
              l. 2. cap. 7.</note>
            caſt abroad his magnetical Vigour in a Sphere.
              <lb/>
            </s>
            <s xml:id="echoid-s2069" xml:space="preserve">Thus.</s>
            <s xml:id="echoid-s2070" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>