Jordanus de Nemore, Liber de ponderibus, old version (31 p.), 1533

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            <pb xlink:href="050/01/022.jpg"/>
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          <chap>
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              <s id="id.0.0.30.00">PROPOSITIO SEPTIMA.
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              </s>
              <s id="id.0.0.30.01.prop">Aequis ponderibus in æquilibri appensis, si æqua
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              lia sint appensibilia, alterum autem circum
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              volubile appenditur, graviua erit secundum situm.
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              </s>
            </p>
            <p type="main">
              <s id="id.0.0.31.01">Circumvolubile dicitur, quando perpendiculum potest habere decli
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              nationem plus largam, quam brachia libræ, ut sit, quando in circulo pendet
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              secundum angulum rectum fixum, dicitur, quando nullam contingit habere de­
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              clinationem perpendiculorum, nisi secundum brachium, et est in situ æqua­
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              litatis inter brachium et perpendiculum angulus rectus, probatur.</s>
              <s>Sint
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              appensa æqualia, ut vult positio, in pondere, sed non in longitudine, tunc
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              illud quod est circumvolubile, maiorem circulum constituit in causa,
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              quia plus declinat propter circumvolutionem, et sic pondus ibi gravius
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              est secundum situm, cum eius descensus sit rectior.</s>
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            <p type="main">
              <s id="id.0.0.32.01">Illa propositio fuit inventa
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              de quodam experimento facto ad probationem partis secundæ.</s>
              <s id="id.0.0.32.02">Cum enim
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              aliquis voluit experiri, an ita esset; posuit in æquilibri pondera æqua
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              lia, cuius appendentia erunt filo composita, quæ motum habent a bra­
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              chiis alienum, etiam propter perpendiculorum flexus incognitis experimentum
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                <figure id="id.050.01.022.1.jpg" xlink:href="050/01/022/1.jpg" number="15"/>
              fallax, quare experiens ve­
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              ritatis irrisorem, et acce­
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              pto cum casu, quod secundum
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              æquidistantiam a medio mo­
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              tus propter perpendicula,
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              ex terminis brachiorum li­
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              neæ sic describuntur utrumque
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              intelligit, quod prius nega­
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              vit, quod est, quia preter mu­
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              tationes brachiorum alii non
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              erunt flexus, et ex hoc non
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              conclusit secundum rectos
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              angulos idem congruere, cum
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              motus brachiorum simili­
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              ter contingit.</s>
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            <p type="main">
              <s>[commentary not transcribed]</s>
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          </chap>
        </body>
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    </archimedes>
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