Delfino, Federico, De fluxu et refluxu aquae maris, 1559

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="024/01/054.jpg"/>
              oporteret dicere, quòd nona ſphæra, quæ eſt ſub ea, moue­
                <lb/>
              tur motu illo tardo, continuo dicto uerſus orientem; ad cu­
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              ius motum ſtellæ fixæ, quæ ſunt in octaua ſphæra, quæ eſt ſu­
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              pra eam, moueantur uerſus orientem continue, & ſic ſphæra
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              inferior ad motum eius proprium moueret ſuperiorem. </s>
              <s>ne­
                <lb/>
              ceſſarium eſt ergo dicere nonam ſphæram collocari immedia­
                <lb/>
              te ſub decima: & ipſam eſſe illam, quæ mouetur continue ab
                <lb/>
              occidente uerſus orientem motu illo tardo ualde iam dicto,
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              defferendo ſecum octauam ſphæram cum ſtellis fixis, quæ ſunt
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              in ea, & alias ſphæras inferiores ei: & quòd octaua ſphæra ſit
                <lb/>
              ſub ea, & eam moueri tali motu, tanquam motu ſibi proprio,
                <lb/>
              ut per eum motum etiam aliæ ſphæræ inferiores octauæ mo­
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              ueantur: & declinatio ſolis ſemper continue diſcurrentis ſub
                <lb/>
              ecliptica octauæ ſphæræ augeatur, & minuatur: & ſic ſituatas
                <lb/>
              tres ſphæras non ſequitur aliquod inconueniens. </s>
              <s>neceſſarium
                <lb/>
              eſt ergo propter reuolutiones dicere ſphæras cæleſtes eſſe de­
                <lb/>
              cem in numero: & omnes eſſe ſic ordinatas, ut dictum eſt:
                <lb/>
              Thebit ergo, ut ſupra dictum eſt, duplicem octauæ ſphæræ
                <lb/>
              motum ineſſe dixit: unum ſcilicet à primo mobili, ſeu nona
                <lb/>
              ſphæra diurnum ſcilicet: alium uero ſibi proprium trepida­
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              tionis, ſeu acceſſus, & receſſus, qui fit ſuper circumferentiis
                <lb/>
              duorum circulorum paruorum æqualium deſcriptorum in
                <lb/>
              concauitate nonæ ſphæræ circa principium arietis, & libræ e­
                <lb/>
              iuſdem nonæ ſphæræ: duplicem etiam eclipticam aſſeruit fi­
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              xam quidem in nona ſphæra, ſeu primo mobili: mobile au­
                <lb/>
              tem in octaua ita, ut capita arietis, & libræ eclipticæ mobilis,
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              ſeu octauæ ſphæræ circumferantur in circumferentiis duorum
                <lb/>
              circulorum paruorum æqualium, quorum media, ſeu poli,
                <lb/>
              ſeu centra ſunt ipſa capita, ſeu principia arietis, & libræ ecli­
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              pticæ fixæ, ſcilicet nonæ ſphæræ, ſeu primi mobilis: & arcus
                <lb/>
              eclipticæ fixæ, ſeu nonæ ſphæræ inter polos, ſeu centra ho­
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              rum circulorum paruorum, & circumferentias ſuas eſt qua­
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              tuor graduum, 18 minutorum, & 43. ſecundorum. </s>
              <s>dixit autem
                <lb/>
              Thebit capita, ſeu principia arietis, & libræ mobilia, ſeu o­
                <lb/>
              ctauæ ſphæræ taliter circumferri in circumferentiis ſuorum </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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