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

Table of figures

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      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/257.jpg" pagenum="239"/>
              motions, operations, and other accidents, by which their natures
                <lb/>
              are diſtinguiſhed, would not deprive us of the power of coming
                <lb/>
              to the knowledge of them; although he ſhould remove thoſe
                <lb/>
              perations, in which they unitedly concur, and which for that reaſon
                <lb/>
              are of no uſe for the diſtinguiſhing of thoſe natures.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>I think your diſſertation to be very good.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>But that the Earth, Water, Air, are of a nature equally
                <lb/>
              conſtituted immoveable about the centre, is it not the opinion of
                <lb/>
              your ſelf,
                <emph type="italics"/>
              Ariſtotle, Prolomy,
                <emph.end type="italics"/>
              and all their ſectators?</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>Its on all hands granted as an undeniable truth.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Then from this common natural condition of
                <lb/>
              cence about the centre, there is no argument drawn of the different
                <lb/>
              natures of theſe Elements, and things elementary, but that
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              knowledge muſt be collected from other qualities not common;
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              and therefore whoſo ſhould deprive the Elements of this common
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              reſt only, and ſhould leave unto them all their other operations,
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              would not in the leaſt block up the way that leadeth to the
                <lb/>
              ledge of their eſſences. </s>
              <s>But
                <emph type="italics"/>
              Copernicus
                <emph.end type="italics"/>
              depriveth them onely of
                <lb/>
              this common reſt, and changeth the ſame into a common motion,
                <lb/>
              leaving them gravity, levity, the motions upwards, downwards, </s>
            </p>
            <p type="main">
              <s>
                <arrow.to.target n="marg477"/>
                <lb/>
              ſlower, faſter, rarity, denſity, the qualities of hot, cold, dry, moiſt,
                <lb/>
              and in a word, all things beſides. </s>
              <s>Therefore ſuch an abſurdity, as
                <lb/>
              this Authour imagineth to himſelf, is no
                <emph type="italics"/>
              Copernican
                <emph.end type="italics"/>
              poſition; nor
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              doth the concurrence in an identity of motion import any more or
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              leſs, than the concurrence in an identity of reſt about the
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              fying, or not diverſifying of natures. </s>
              <s>Now tell us, if there be any
                <lb/>
              argument to the contrary.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg477"/>
                <emph type="italics"/>
              The concurrence
                <lb/>
              of the Elements in
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              a common motion
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              importeth no more
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              or leſſe, than their
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              concurrence in a
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              common reſt.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>There followeth a fourth objection, taken from a
                <lb/>
                <arrow.to.target n="marg478"/>
                <lb/>
              ral obſervation, which is,
                <emph type="italics"/>
              That bodies of the ſame kind, have
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              tions that agree in kinde, or elſe they agree in reſt. </s>
              <s>But by the
                <emph.end type="italics"/>
                <lb/>
              pernican Hypotheſis,
                <emph type="italics"/>
              bodies that agree in kinde, and are moſt ſem-
                <emph.end type="italics"/>
                <lb/>
                <arrow.to.target n="marg479"/>
                <lb/>
                <emph type="italics"/>
              blable to one another, would be very diſcrepant, yea diametrically
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              repugnant as to motion; for that Stars ſo like to one another, would
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              be nevertheleſſe ſo unlike in motion, as that ſix Planets would
                <lb/>
              tually turn round; but the Sun and all the fixeed Stars would ſtand
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              perpetually immoveable.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg478"/>
                <emph type="italics"/>
              A fourth
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              ment againſt
                <emph.end type="italics"/>
                <lb/>
              pernicus.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg479"/>
                <emph type="italics"/>
              Bodies of the
                <lb/>
              ſame kinde have
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              motions that agree
                <lb/>
              in kinde.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>The forme of the argument appeareth good; but yet
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              I believe that the application or matter is defective: and if the
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              Authour will but perſiſt in his aſſumption, the conſequence ſhall
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              make directly againſt him. </s>
              <s>The Argument runs thus; Amongſt
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              mundane bodies, ſix there are that do perpetually move, and they
                <lb/>
                <arrow.to.target n="marg480"/>
                <lb/>
              are the ſix Planets; of the reſt, that is, of the Earth, Sun, and
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              fixed Stars, it is diſputable which of them moveth, and which
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              ſtands ſtill, it being neceſſary, that if the Earth ſtand ſtill, the Sun
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              and ſixed Stars do move; and it being alſo poſſible, that the Sun </s>
            </p>
          </chap>
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