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

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            <p type="main">
              <s>
                <pb xlink:href="040/01/318.jpg" pagenum="298"/>
              motion ſtraight forwards, it goeth to the matutine conjunction;
                <lb/>
              and moreover it being true, that when it appeareth bigge it ſhews
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              with a corniculate figure, and when it appeareth little, it ſeems
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              perfectly round, theſe appearances, I ſay, being true, I do not ſee
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              how one can chooſe but affirm the ſaid ſtar to revolve in a circle
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                <arrow.to.target n="marg527"/>
                <lb/>
              bout the Sun, for that the ſaid circle cannot in any wiſe be ſaid
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              to encompaſſe or to contain the Earth within it, nor to be
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              our to the Sun, that is between it and the Earth, nor yet
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              riour to the Sun. </s>
              <s>That circle cannot incompaſſe the Earth,
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              cauſe
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              would then ſometimes come to oppofition with the
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              Sun; it cannot be inferiour, for then
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              in both its
                <lb/>
              ons with the Sun would ſeem horned; nor can it be ſuperiour,
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              for then it would alwayes appear round, and never cornicular;
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              and therefore for receit of it I will draw the circle CH, about
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              the Sun, without encompaſſing the Earth.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg526"/>
              Venus
                <emph type="italics"/>
              very greas
                <lb/>
              towards the
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              ctive conjunction
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              and very ſmall
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              wards the
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              tine.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg527"/>
              Venus
                <emph type="italics"/>
                <lb/>
              rily proved to move
                <lb/>
              about the Sun.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Having placed
                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              it is requiſite that you think of
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                <emph type="italics"/>
              Mercury,
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              which, as you know, alwayes keeping about the Sun,
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              doth recede leſſe diſtance from it than
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              ; therefore conſider
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              with your ſelf, what place is moſt convenient to aſſign
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                <arrow.to.target n="marg528"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg528"/>
                <emph type="italics"/>
              The revolution of
                <emph.end type="italics"/>
                <lb/>
              Mercury
                <emph type="italics"/>
              concluded
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              to be about the Sun,
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              within the Orb of
                <emph.end type="italics"/>
                <lb/>
              Venus.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>It is not to be queſtioned, but that this Planet
                <lb/>
              ing
                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              the moſt commodious place for it will be, a leſſer
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              cle within this of
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              Venus,
                <emph.end type="italics"/>
              in like manner about the Sun, being
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              that of its greateſt vicinity to the Sun, an argument, an evidence
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              ſufficiently proving the vigour of its illumination, above that of
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                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              and of the other Planets, we may therefore upon theſe
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              conſiderations draw its Circle, marking it with the Characters
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              BG.</s>
            </p>
            <p type="main">
              <s>
                <arrow.to.target n="marg529"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg529"/>
              Mars
                <emph type="italics"/>
              neceſſarily
                <lb/>
              includeth within its
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              Orb the Earth, and
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              alſo the Sun.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>But
                <emph type="italics"/>
              Mars,
                <emph.end type="italics"/>
              Where ſhall we place it?</s>
            </p>
            <p type="main">
              <s>SIMP.
                <emph type="italics"/>
              Mars,
                <emph.end type="italics"/>
              Becauſe it comes to an oppoſition with the Sun,
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              its Circle muſt of neceſſity encompaſs the Earth; But I ſee that it
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              muſt neceſſarily encompaſs the Sun alſo, for coming to
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              on with the Sun, if it did not move over it, but were below it, it
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              would appear horned, as
                <emph type="italics"/>
              Venus
                <emph.end type="italics"/>
              and the Moon; but it ſhews
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              wayes round, and therefore it is neceſſary, that it no leſs includ­</s>
            </p>
            <p type="main">
              <s>
                <arrow.to.target n="marg530"/>
                <lb/>
              eth the Sun within its circle than the Earth. </s>
              <s>And becauſe I
                <lb/>
              member that you did ſay, that when it is in oppoſition with the
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              Sun, it ſeems 60 times bigger than when it is in the conjunction,
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              me thinks that a Circle about the Centre of the Sun, and that
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              eth in the earth, will very well agree with theſe
                <emph type="italics"/>
              Phænomena,
                <emph.end type="italics"/>
                <lb/>
              which I do note and mark D I, where
                <emph type="italics"/>
              Mars
                <emph.end type="italics"/>
              in the point D, is near
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              to the earth, and oppoſite to the Sun; but when it is in the point
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              I, it is at Conjuction with the Sun, but very far from the Earth.
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                <arrow.to.target n="marg531"/>
                <lb/>
              And becauſe the ſame appearances are obſerved in
                <emph type="italics"/>
              Jupiter
                <emph.end type="italics"/>
              and
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                <emph type="italics"/>
              Saturn,
                <emph.end type="italics"/>
              although with much leſſer difference in
                <emph type="italics"/>
              Jupiter
                <emph.end type="italics"/>
              than in
                <lb/>
                <emph type="italics"/>
              Mars,
                <emph.end type="italics"/>
              and with yet leſſe in
                <emph type="italics"/>
              Saturn
                <emph.end type="italics"/>
              than in
                <emph type="italics"/>
              Jupiter
                <emph.end type="italics"/>
              ; me thinks I </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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