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

Table of figures

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/332.jpg" pagenum="312"/>
              together with
                <emph type="italics"/>
              Appollonius Pergæus
                <emph.end type="italics"/>
              in
                <emph type="italics"/>
              lib.
                <emph.end type="italics"/>
              5. of his Revolutions,
                <lb/>
                <emph type="italics"/>
              Chap.
                <emph.end type="italics"/>
              35.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg571"/>
                <emph type="italics"/>
              The ſole annual
                <lb/>
              motion of the
                <lb/>
              Earth cauſeth
                <lb/>
              great inequality of
                <lb/>
              motions in the five
                <lb/>
              Planets.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg572"/>
                <emph type="italics"/>
              A demonſtration of
                <lb/>
              the inequalities of
                <lb/>
              the three ſuperiour
                <lb/>
              Planets dependent
                <lb/>
              on the annual
                <lb/>
              tion of the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg573"/>
                <emph type="italics"/>
              Retrogradations
                <lb/>
              more frequent in
                <emph.end type="italics"/>
                <lb/>
              Saturn,
                <emph type="italics"/>
              leſſe in
                <emph.end type="italics"/>
                <lb/>
              piter,
                <emph type="italics"/>
              and yet leſſe
                <lb/>
              in
                <emph.end type="italics"/>
              Mars,
                <emph type="italics"/>
              and why.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg574"/>
                <emph type="italics"/>
              The
                <lb/>
              tion of
                <emph.end type="italics"/>
              Venus
                <emph type="italics"/>
              and
                <emph.end type="italics"/>
                <lb/>
              Mercury
                <emph type="italics"/>
                <lb/>
              ſtrated by
                <emph.end type="italics"/>
                <lb/>
              nius
                <emph type="italics"/>
              and
                <emph.end type="italics"/>
                <lb/>
              cus.</s>
            </p>
            <p type="main">
              <s>You ſee, Gentlemen, with what facility and ſimplicity the
                <lb/>
                <arrow.to.target n="marg575"/>
                <lb/>
              al motion, were it appertaining to the Earth, is accommodated
                <lb/>
              to render a reaſon of the apparent exorbitances, that are obſerved
                <lb/>
              in the motions of the five Planets,
                <emph type="italics"/>
              Saturn, Jupiter, Mars,
                <lb/>
              nus
                <emph.end type="italics"/>
              and
                <emph type="italics"/>
              Mercury,
                <emph.end type="italics"/>
              taking them all away, and reducing them to
                <lb/>
                <arrow.to.target n="marg576"/>
                <lb/>
              equal and regular motions. </s>
              <s>And of this admirable effect,
                <emph type="italics"/>
                <lb/>
              cholas Copernicus,
                <emph.end type="italics"/>
              hath been the firſt that hath made the reaſon
                <lb/>
              plain unto us. </s>
              <s>But of another effect, no leſſe admirable than
                <lb/>
              this, and that with a knot, perhaps more difficult to unknit,
                <lb/>
              bindeth the wit of man, to admit this annual converſion, and to
                <lb/>
              leave it to our Terreſtrial Globe; a new and unthought of
                <lb/>
              jecture ariſeth from the Sun it ſelf, which ſheweth that it is
                <lb/>
              ling to be ſingular in ſhifting, of this atteſtation of ſo eminent a
                <lb/>
              concluſion, rather as a teſtimony beyond all exception, it hath
                <lb/>
              deſired to be heard apart. </s>
              <s>Hearken then to this great and new
                <lb/>
                <lb/>
                <arrow.to.target n="marg577"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg575"/>
                <emph type="italics"/>
              The annual
                <lb/>
              tion of the Earth
                <lb/>
              moſt apt to render
                <lb/>
              a reaſon of the
                <lb/>
              orbttances of the
                <lb/>
              five Planets.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg576"/>
                <emph type="italics"/>
              The Sun it ſelf
                <lb/>
              teſtifieth the
                <lb/>
              al motion to belong
                <lb/>
              to the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg577"/>
                <emph type="italics"/>
              The Lyncæan
                <lb/>
              Academick the
                <lb/>
              firſt diſcoverer of
                <lb/>
              the Solar ſpots, and
                <lb/>
              all the other
                <lb/>
              ſtial novelties.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>The firſt diſcoverer and obſerver of the
                <emph type="italics"/>
              Solar
                <emph.end type="italics"/>
              ſpots, as alſo of
                <lb/>
              all the other Cœleſtial novelties, was our
                <emph type="italics"/>
              Academick Lincæus
                <emph.end type="italics"/>
              ; and
                <lb/>
              he diſcovered them
                <emph type="italics"/>
              anno
                <emph.end type="italics"/>
              1610. being at that time Reader of the
                <lb/>
                <emph type="italics"/>
              Mathematicks,
                <emph.end type="italics"/>
              in the Colledge of
                <emph type="italics"/>
              Padua,
                <emph.end type="italics"/>
              and there, and in
                <emph type="italics"/>
                <lb/>
              nice,
                <emph.end type="italics"/>
              he diſcourſed thereof with ſeveral perſons, of which ſome </s>
            </p>
            <p type="main">
              <s>
                <arrow.to.target n="marg578"/>
                <lb/>
              are yet living: And the year following, he ſhewed them in
                <emph type="italics"/>
              Rome
                <emph.end type="italics"/>
                <lb/>
              to many great perſonages, as he relates in the firſt of his Letters
                <lb/>
              to
                <emph type="italics"/>
              Marcus Velſerus,
                <emph.end type="italics"/>
              ^{*} Sheriffe of
                <emph type="italics"/>
              Auguſta.
                <emph.end type="italics"/>
              He was the
                <lb/>
              firſt that againſt the opinions of the too timorous and too jealous
                <lb/>
                <arrow.to.target n="marg579"/>
                <lb/>
              aſſertors of the Heavens inalterability, affirmed thoſe ſpots to be
                <lb/>
              matters, that in ſhort times were produced and diſſolved: for as
                <lb/>
              to place, they were contiguous to the body of the Sun, and
                <lb/>
              volved about the ſame; or elſe being carried about by the ſaid
                <lb/>
              Solar body, which revolveth in it ſelfe about its own Centre, in
                <lb/>
              the ſpace almoſt of a moneth, do finiſh their courſe in that time;
                <lb/>
              which motion he judged at firſt to have been made by the Sun
                <lb/>
              bout an Axis erected upon the plane of the Ecliptick; in regard
                <lb/>
              that the arches deſcribed by the ſaid ſpots upon the
                <emph type="italics"/>
              Diſcus
                <emph.end type="italics"/>
              of the
                <lb/>
              Sun appear unto our eye right lines, and parallels to the plane of
                <lb/>
              the Ecliptick: which therefore come to be altered, in part, with
                <lb/>
              ſome accidental, wandring, and irregular motions, to which they
                <lb/>
              are ſubject, and whereby tumultuarily, and without any order
                <lb/>
              they ſucceſſively change ſituations amongſt themſelves, one
                <lb/>
              while crouding cloſe together, another while diſſevering, and
                <lb/>
              ſome dividing themſelves into many and very much changing
                <lb/>
              gures, which, for the moſt part, are very unuſual. </s>
              <s>And albeit
                <lb/>
              thoſe ſo inconſtant mutations did ſomewhat alter the primary </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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