Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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[91.] Finis Theorematum adjunctorum.
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          <head xml:id="echoid-head83" xml:space="preserve">LXIX.</head>
          <p>
            <s xml:id="echoid-s1722" xml:space="preserve">Theſauri conſtructio rotam habentis æneam, verſatilem,
              <lb/>
            quæ ἁ{γν}ι{ςή}{ρι}ον appellatur. </s>
            <s xml:id="echoid-s1723" xml:space="preserve">Hanc enim ad ſacra accedenter con-
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            vertere ſoliti ſunt. </s>
            <s xml:id="echoid-s1724" xml:space="preserve">Itaque contingit dum rota convertitur
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            melancoryphi vocem reddi, atque ipſam aviculam inſiſten-
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            tem converti. </s>
            <s xml:id="echoid-s1725" xml:space="preserve">Converſa autem ea melancory phum non am-
              <lb/>
            plius vocem emittere, neque converti.</s>
            <s xml:id="echoid-s1726" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1727" xml:space="preserve">Sit theſaurus ABCD,
              <lb/>
              <figure xlink:label="fig-0092-01" xlink:href="fig-0092-01a" number="76">
                <image file="0092-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0092-01"/>
              </figure>
            & </s>
            <s xml:id="echoid-s1728" xml:space="preserve">axis in ipſo diſpoſitus
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            EF facile verſatilis. </s>
            <s xml:id="echoid-s1729" xml:space="preserve">Ei
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            vero conjungatur rota
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            HK, quam convertere
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            oportet. </s>
            <s xml:id="echoid-s1730" xml:space="preserve">Sint præterea
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            duæ rotæ LM eidem axi
              <lb/>
            intus conjunctæ, qua-
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            rum L quidem exeli-
              <lb/>
            ctram habeat, M vero
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            radiata ſit. </s>
            <s xml:id="echoid-s1731" xml:space="preserve">Circa exeli-
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            ctram funis involvatur.
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            </s>
            <s xml:id="echoid-s1732" xml:space="preserve">à cujus extremo ſuſpen-
              <lb/>
            datur clibanus N, tu-
              <lb/>
            bum habens X O, & </s>
            <s xml:id="echoid-s1733" xml:space="preserve">in
              <lb/>
            ſummitate ſyringulam,
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            quæ melancoryphi vo-
              <lb/>
            cem reddat. </s>
            <s xml:id="echoid-s1734" xml:space="preserve">Subjiciatur
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            autem clibano aquæ vas
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            P R. </s>
            <s xml:id="echoid-s1735" xml:space="preserve">Et à vertice the-
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            ſauri demittatur axicu-
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            lus S T, qui facile con-
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            verti poffit. </s>
            <s xml:id="echoid-s1736" xml:space="preserve">Habeatque ad S melancoryphum, ad T vero tympanum ra-
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            diatur, cujus radii radiis tympani Mimplicentur. </s>
            <s xml:id="echoid-s1737" xml:space="preserve">Continget igitur con-
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            verſa rota HK, funem circa exelictram involvi, & </s>
            <s xml:id="echoid-s1738" xml:space="preserve">clibanum ſuſtinere. </s>
            <s xml:id="echoid-s1739" xml:space="preserve">
              <lb/>
            At rota dimiſſa clibanum ob gravitatem deſcendens in aquam aëre expulſo
              <lb/>
            ſonum edere. </s>
            <s xml:id="echoid-s1740" xml:space="preserve">Simul vero & </s>
            <s xml:id="echoid-s1741" xml:space="preserve">melancoryphum converti ob converſionem
              <lb/>
            tympanorum.</s>
            <s xml:id="echoid-s1742" xml:space="preserve"/>
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