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="040/01/437.jpg" pagenum="415"/>
              greater and leſſer. </s>
              <s>Now you ſee that the cauſe of the Monethly
                <lb/>
              Period reſideth in the annual motion; and withal you ſee how
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              much the Moon is concerned in this buſineſs, and how it is
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              with interrupted apart, without having any thing to do with either,
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              with Seas or Waters.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg806"/>
                <emph type="italics"/>
              The Earths
                <lb/>
              nual motion by the
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              Ecliptick, unequal
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              by means of the
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              Moons motion.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>If one that never had ſeen any kinde of Stairs or
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              der, were ſhewed a very high Tower, and asked if ever he hoped
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              to climb to the top of it, I verily believe that he would anſwer he
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              did not, not conceiving how one ſhould come thither any way
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              except by flying; but ſhewing him a ſtone of but a foot high, and
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              asking him whether he thought he could get to the top of that,
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              I am certain that he would anſwer he could; and farther, that he
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              would not deny, but that it was not onely one, but ten, twenty,
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              and an hundred times eaſier to climb that: But now if he ſhould
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              be ſhewed the Stairs, by means whereof, with the facility by him
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              granted, it is poſſible to get thither, whither he a little before had
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              affirmed it was impoſſible to aſcend, I do think that laughing at
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              himſelf he would confeſs his dulneſs of apprehenſion. </s>
              <s>Thus,
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                <emph type="italics"/>
              Salviatus,
                <emph.end type="italics"/>
              have you ſtep by ſtep ſo gently lead me, that, not
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              without wonder, I finde that I am got with ſmall pains to that
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              height which I deſpaired of arriving at. 'Tis true; that the
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              caſe having been dark, I did not perceive that I was got nearer
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              to, or arrived at the top, till that coming into the open Air I
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              covered a great Sea, and ſpacious Country: And as in aſcending
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              one ſtep, there is no labour; ſo each of your propoſitions by it
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              ſelf ſeemed to me ſo plain, that thinking I heard but little or
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              thing that was new unto me, I conceived that my benefit thereby
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              had been little or none at all: Whereupon I was the more
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              zed at the unexpected
                <emph type="italics"/>
              exit
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              of this diſcourſe, that hath guided me
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              to the knowledge of a thing which I held impoſſible to be
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              monſtrated. </s>
              <s>One doubt onely remains, from which I deſire to
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              be freed, and this it is; Whether that if the motion of the Earth
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              together with that of the Moon under the Zodiack are irregular
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              motions, thoſe irregularities ought to have been obſerved and
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              ken notice of by
                <emph type="italics"/>
              Aſtronomers,
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              which I do not know that they
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              are: Therefore I pray you, who are better acquainted with theſe
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              things than I, to free me from this doubt, and tell me how the
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              caſe ſtands.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>You ask a rational queſtion, and anſwering to the
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                <arrow.to.target n="marg807"/>
                <lb/>
              jection, I ſay; That although
                <emph type="italics"/>
              Aſtronomy
                <emph.end type="italics"/>
              in the courſes of many
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              ages hath made a great progreſs in diſcovering the conſtitution
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              and motions of the Celeſtial bodies, yet is it not hitherto arrived
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              at that height, but that very many things remain undecided, and
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              haply many others alſo undiſcovered. </s>
              <s>It is to be ſuppoſed that the
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              firſt obſervers of Heaven knew no more but one motion common </s>
            </p>
          </chap>
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