Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/315.jpg" pagenum="295"/>
              figure; and moveth circularly, hath neceſſarily, and in reſpect of
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              its figure a centre; and we being moreover certain, that within
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              the ſtarry Sphere there are many Orbs, the one within another,
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              with their ſtars, which likewiſe do move circulary, it is in diſpute
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              whether it is moſt reaſonable to believe and to ſay that theſe
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              teined Orbs do move round the ſaid centre of the World, or elſe
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              about ſome other centre far remote from that? </s>
              <s>Tell me now
                <emph type="italics"/>
                <lb/>
              plicius
                <emph.end type="italics"/>
              what you think concerning this particular.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>If we could ſtay upon this onely ſuppoſition, and that
                <lb/>
                <arrow.to.target n="marg519"/>
                <lb/>
              we were ſure that we might encounter nothing elſe that might
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              ſturb us, I would ſay that it were much more reaſonable to
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              firm that the Orb containing, and the parts contained, do all
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              move about one common centre, than about divers.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg519"/>
                <emph type="italics"/>
              Its more
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              nal that the Orb
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              conteining, and the
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              parts conteined, do
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              move all about one
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              centre, than uoon
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              divers.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Now if it were true that the centre of the World is the
                <lb/>
                <arrow.to.target n="marg520"/>
                <lb/>
              ſame about which the Orbs of mundane bodies, that is to ſay, of
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              the Planets, move, it is moſt certain that it is not the Earth, but
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              the Sun rather that is fixed in the centre of the World. </s>
              <s>So that as
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              to this firſt ſimple and general apprehenſion, the middle place
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              belongeth to the Sun, and the Earth is as far remote from the
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              centre, as it is from that ſame Sun.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg520"/>
                <emph type="italics"/>
              If the centre of
                <lb/>
              the World be the
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              ſame with that
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              bout which the
                <lb/>
              nees move the Sun
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              and not the Earth
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              is placed in it.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>But from whence do you argue that not the Earth, but
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              the Sun is in the centre of the Planetary revolutions?</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>I infer the ſame from moſt evident, and therefore
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              ceſſarily concludent obſervations, of which the moſt palpable to
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                <arrow.to.target n="marg521"/>
                <lb/>
              exclude the Earth from the ſaid centre, and to place the Sun
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              therein, are, the ſeeing all the Planets one while neerer and
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              ther while farther off from the Earth with ſo great differences, that
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              for example,
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              when it is at the fartheſt, is ſix times more
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              remote from us, than when it is neereſt, and
                <emph type="italics"/>
              Mars
                <emph.end type="italics"/>
              riſeth almoſt
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              eight times as high at one time as at another. </s>
              <s>See therefore
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              ther
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              was not ſomewhat miſtaken in thinking that it was
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              at all times couidiſtant from us.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg521"/>
                <emph type="italics"/>
              Obſervations from
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              whence it is
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              lected that the Sun
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              and not the Earth
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              is in the centre of
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              the Celeſtial
                <lb/>
              lutions.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>What in the next place are the tokens that their
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              ons are about the Sun?</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>It is argued in the three ſuperiour planets
                <emph type="italics"/>
              Mars,
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              ter,
                <emph.end type="italics"/>
              and
                <emph type="italics"/>
              Saturn,
                <emph.end type="italics"/>
              in that we find them alwayes neereſt to the
                <lb/>
              Earth when they are in oppoſition to the Sun, and fartheſt off
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              when they are towards the conjunction, and this approximatian
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              and receſſion importeth thus much that
                <emph type="italics"/>
              Mars
                <emph.end type="italics"/>
              neer at hand,
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              peareth very neer 60 times greater than when it is remote. </s>
              <s>As to
                <lb/>
                <arrow.to.target n="marg522"/>
                <lb/>
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              in the next place, and to
                <emph type="italics"/>
              Mercury,
                <emph.end type="italics"/>
              we are certain that
                <lb/>
              they revolve about the Sun, in that they never move far from
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              him, and in that we ſee them one while above and another while
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                <arrow.to.target n="marg523"/>
                <lb/>
              below it, as the mutations of figure in
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              neceſſarily argueth.
                <lb/>
              </s>
              <s>Tonchiug the Moon it is certain, that ſhe cannot in any way </s>
            </p>
          </chap>
        </body>
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    </archimedes>
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