Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

Table of contents

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[31.] XXIV.
[32.] XXV.
[33.] XXVI.
[34.] ALITER. Poteſt autem & aliteridem effici.
[35.] XXVII.
[36.] XXVIII.
[37.] XXIX.
[38.] XXX.
[39.] XXXI.
[40.] XXXII.
[41.] XXXIII.
[42.] XXXIV.
[43.] XXXV.
[44.] XXXVI.
[45.] XXXVII.
[46.] XXXVIII.
[47.] XXXIX.
[48.] XL.
[49.] XLI.
[50.] XLII.
[51.] XLIII.
[52.] XLIV.
[53.] XLV.
[54.] XLVI.
[55.] XLVII.
[56.] XLVIII.
[57.] XLIX.
[59.] LI.
[60.] LII.
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          <head xml:id="echoid-head28" xml:space="preserve">XV.</head>
          <p>
            <s xml:id="echoid-s609" xml:space="preserve">Voces igitur per ſyringas fiunt, ſed differentes ſoni red-
              <lb/>
            duntur à ſyringis, vel tenuioribus, vel craſſioribus, vel
              <lb/>
            etiam in longitudinem extenſis, vel contractis: </s>
            <s xml:id="echoid-s610" xml:space="preserve">vel cum
              <lb/>
            pars ipſarum in aquam immergitur, aut uberiorem, autexi-
              <lb/>
            liorem, adeo ut multarum avicularum hoc modo voces effi-
              <lb/>
            ciantur. </s>
            <s xml:id="echoid-s611" xml:space="preserve">Conſtruuntur autem vel in fonte, vel in antro, vel
              <lb/>
            univerſe ubicumque aqua influit, aviculæ multæ per ordi-
              <lb/>
            nem diſpoſitæ, & </s>
            <s xml:id="echoid-s612" xml:space="preserve">his aſſidens noctua, quæ ſua ſponte ad avi-
              <lb/>
            culas convertitur, & </s>
            <s xml:id="echoid-s613" xml:space="preserve">rurſus avertitur: </s>
            <s xml:id="echoid-s614" xml:space="preserve">averſa autem ea can-
              <lb/>
            tant aviculæ & </s>
            <s xml:id="echoid-s615" xml:space="preserve">rurſus ad ipſas converſa non amplius cantant:
              <lb/>
            </s>
            <s xml:id="echoid-s616" xml:space="preserve">atque hoc ſæpius fit. </s>
            <s xml:id="echoid-s617" xml:space="preserve">Conſtruitur autem hoc modo.</s>
            <s xml:id="echoid-s618" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s619" xml:space="preserve">Sit canaliculus ſemper fluens A, & </s>
            <s xml:id="echoid-s620" xml:space="preserve">ipſi ſubjiciatur præcluſum
              <lb/>
            vas B C D E, habens ſpiritalem diabetem, vel ſiphona inflexum
              <lb/>
            F G, & </s>
            <s xml:id="echoid-s621" xml:space="preserve">demiſſum infundibulum H K, cujus caulis diſtet à fundo vaſis
              <lb/>
            quantum ad aquæ fluxum ſatis ſit: </s>
            <s xml:id="echoid-s622" xml:space="preserve">habeat autem plures ſyringulas,
              <lb/>
            quales antea diximus, ut in L: </s>
            <s xml:id="echoid-s623" xml:space="preserve">Itaque dum vas B C D E aqua impletur,
              <lb/>
            continget aërem, quieſt in ipſo, extruſum per ſyringulas, avicularum
              <lb/>
            cantus imitari: </s>
            <s xml:id="echoid-s624" xml:space="preserve">unaquæque enim ſyringularum in unamquamque avicu-
              <lb/>
            lam ſecundum os terminatur: </s>
            <s xml:id="echoid-s625" xml:space="preserve">ſed dum poſt repletionem exinanitur per
              <lb/>
            tubum C F, non amplius cantare.</s>
            <s xml:id="echoid-s626" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s627" xml:space="preserve">Ut autem noctua ad aviculas convertatur, & </s>
            <s xml:id="echoid-s628" xml:space="preserve">avertatur,
              <lb/>
            ſicuti traditum eſt, ante conſtruentur ea, de quibus dice-
              <lb/>
            mus.</s>
            <s xml:id="echoid-s629" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s630" xml:space="preserve">Sit enim in aliqua baſi M axis rectus, & </s>
            <s xml:id="echoid-s631" xml:space="preserve">tornatus N X, circa quem
              <lb/>
            aptetur ſyringa O P, quæ expedite circa ipſum converti poſſit: </s>
            <s xml:id="echoid-s632" xml:space="preserve">huic
              <lb/>
            autem compactum ſit parvum tympanum R S, in quo inſiſtet noctua ipſi
              <lb/>
            coagmentata, & </s>
            <s xml:id="echoid-s633" xml:space="preserve">circa ſyringam duæ catenæ in contrariam partem
              <lb/>
            diſſolutæ T Y, V G, quæ per duas trochleas referantur, T Y quidem
              <lb/>
            ad pondus Z ſuſpenſum, V G vero ad vas concavum Ω ſubjectum ſipho-
              <lb/>
            ni vel ſpiritali diabetæ F G. </s>
            <s xml:id="echoid-s634" xml:space="preserve">Contingit igitur dum vas B C D E exinani-
              <lb/>
            tur, humidum ferri in vas Ω, ſyringamque O P & </s>
            <s xml:id="echoid-s635" xml:space="preserve">noctuam converti, ita
              <lb/>
            ut ad aviculas ſpectet: </s>
            <s xml:id="echoid-s636" xml:space="preserve">exinanito autem B C D E vaſe, & </s>
            <s xml:id="echoid-s637" xml:space="preserve">ipſum vas Ω
              <lb/>
            exinaniri per aliquem ſiphonem, vel ſpiritalem diabetem, qui eſt in ipſo:
              <lb/>
            </s>
            <s xml:id="echoid-s638" xml:space="preserve">quare rurſus propendens pondus Z noctuam avertet eo tempore, quo
              <lb/>
            vas B C D E impletur aqua, & </s>
            <s xml:id="echoid-s639" xml:space="preserve">rurſus avicularum voces redduntur.</s>
            <s xml:id="echoid-s640" xml:space="preserve"/>
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