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

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            <p type="main">
              <s>
                <pb xlink:href="040/01/328.jpg" pagenum="308"/>
              the obſervators ſtanding in
                <emph type="italics"/>
              Jupiter,
                <emph.end type="italics"/>
              make the ſelf ſame changes
                <lb/>
              of Figure, that to us upon the Earth, the Moon doth make. </s>
              <s>You
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              ſee now how theſe three things, which at ſirſt ſeémed diſſonant,
                <lb/>
              do admirably accord with the
                <emph type="italics"/>
              Copernican
                <emph.end type="italics"/>
              Syſteme. </s>
              <s>Here alſo by
                <lb/>
              the way may
                <emph type="italics"/>
              Simplicius
                <emph.end type="italics"/>
              ſee, with what probability one may
                <lb/>
              clude, that the Sun and not the Earth, is in the Centre of the
                <lb/>
                <emph type="italics"/>
              Planetary
                <emph.end type="italics"/>
              converſions. </s>
              <s>And ſince the Earth is now placed
                <lb/>
              mongſt mundane Bodies, that undoubtedly move about the Sun,
                <lb/>
              to wit, above
                <emph type="italics"/>
              Mercury
                <emph.end type="italics"/>
              and
                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              and below
                <emph type="italics"/>
              Saturn, Jupiter,
                <emph.end type="italics"/>
                <lb/>
              and
                <emph type="italics"/>
              Mars
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              ; ſhall it not be in like manner probable, and perhaps
                <lb/>
              neceſſary to grant, that it alſo moveth round?</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg565"/>
                <emph type="italics"/>
              The
                <emph.end type="italics"/>
              Medicean
                <lb/>
                <emph type="italics"/>
              Stars areas it were
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              four Moons about
                <emph.end type="italics"/>
                <lb/>
              Jupiter.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>Theſe accidents are ſo notable and conſpicuous, that
                <lb/>
              it is not poſſible, but that
                <emph type="italics"/>
              Ptolomy
                <emph.end type="italics"/>
              and others his Sectators, ſhould
                <lb/>
              have had knowledge of them, and having ſo, it is likewiſe
                <lb/>
              ſary, that they have found a way to render reaſons of ſuch, and
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              ſo ſenſible appearances that were ſufficient, and alſo congruous
                <lb/>
              and probable, ſeeing that they have for ſo long a time been
                <lb/>
              ceived by ſuch numbers of learned
                <lb/>
                <arrow.to.target n="marg566"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg566"/>
                <emph type="italics"/>
              The Principal
                <lb/>
              ſcope of
                <lb/>
              mers, is to give a
                <lb/>
              reaſon of
                <lb/>
              ances.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>You argue very well; but you know that the principal
                <lb/>
              ſcope of
                <emph type="italics"/>
              Aſtronomers,
                <emph.end type="italics"/>
              is to render only reaſon for the appearances
                <lb/>
              in the Cæleſtial Bodies, and to them, and to the motions of the
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              Stars, to accomodate ſuch ſtructures and compoſitions of Circles,
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              that the motions following thoſe calculations, anſwer to the ſaid
                <lb/>
              appearances, little ſcrupling to admit of ſome exorbitances, that
                <lb/>
              indeed upon other accounts they would much ſtick at. </s>
              <s>And
                <emph type="italics"/>
              Co-
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>
                <arrow.to.target n="marg567"/>
                <lb/>
                <emph type="italics"/>
              pernic us
                <emph.end type="italics"/>
              himſelf writes, that he had in his firſt ſtudies reſtored the
                <lb/>
              Science of
                <emph type="italics"/>
              Aſtronomy
                <emph.end type="italics"/>
              upon the very ſuppoſitions of
                <emph type="italics"/>
              Ptolomy,
                <emph.end type="italics"/>
              and
                <lb/>
              in ſuch manner corrected the motions of the Planets, that the
                <lb/>
              computations did very exactly agree with the
                <emph type="italics"/>
              Phænomena,
                <emph.end type="italics"/>
              and
                <lb/>
              the
                <emph type="italics"/>
              Phænomena
                <emph.end type="italics"/>
              with the ſupputations, in caſe that he took the
                <lb/>
              Planets ſeverally one by one. </s>
              <s>But he addeth, that in going
                <lb/>
              bout to put together all the ſtructures of the particular Fabricks,
                <lb/>
              there reſulted thence a Monſter and
                <emph type="italics"/>
              Chimæra,
                <emph.end type="italics"/>
              compoſed of
                <lb/>
              bers moſt diſproportionate to one another, and altogether
                <lb/>
              patible; So that although it ſatisfied an
                <emph type="italics"/>
              Aſtronomer
                <emph.end type="italics"/>
              meerly
                <emph type="italics"/>
                <lb/>
              rithmetical,
                <emph.end type="italics"/>
              yet did it not afford ſatisfaction or content to the
                <lb/>
                <arrow.to.target n="marg568"/>
                <lb/>
                <emph type="italics"/>
              Aſtronomer Phyloſophical.
                <emph.end type="italics"/>
              And becauſe he very well
                <lb/>
              ſtood, that if one might ſalve the Cæleſtial appearances with falſe
                <lb/>
              aſſumptions in nature, it might with much more eaſe be done by
                <lb/>
              true ſuppoſitions, he ſet himſelf diligently to ſearch whether
                <lb/>
              ny amongſt the antient men of fame, had aſcribed to the World
                <lb/>
              any other ſtructure, than that commonly received by
                <emph type="italics"/>
              Ptolomy
                <emph.end type="italics"/>
              ;
                <lb/>
              and finding that ſome
                <emph type="italics"/>
              Pythagoreans
                <emph.end type="italics"/>
              had in particular aſſigned
                <lb/>
              the Diurnal converſion to the Earth, and others the annual
                <lb/>
              tion alſo, he began to compare the appearances, and </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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