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

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              theoricis earum uidebitur. </s>
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              <s>Thebit autem uolens ſaluare uariationem declinationis ſolis
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              ab æquinoctiali, qui ſemper, & continue mouetur motu pro­
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              prio ab occidente uerſus orientem ſub ecliptica octauæ ſphæ­
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              ræ; quam declinationem inuenit Ptolomæus tempore ſuo eſſe
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              XXIII graduum, LI minutorum, & XX ſecundorum, & Al­
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              meon, & Albategni, qui fuerunt poſteriores Ptolomæo, inue­
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              nerunt eam eſſe XXIII graduum, XXXIII minutorum, &
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              XXX ſecundorum dixit octauam ſphæram moueri, quòd à
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              motu titubationis, ſeu acceſſus, & receſſus in circumferentiis
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              duorum circulorum paruorum æqualium, quorum media, ſeu
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              poli, ſeu centra ſunt ipſa capita, ſeu principia arietis, & libræ
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              nonæ ſphæræ, ſeu primi mobilis; taliter ſcilicet, quòd duo pun
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              cta certa, & determinata octauæ ſphæræ, quæ capita arietis, &
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              & libræ, ſeu principia arietis, & libræ octauæ ſphæræ dicuntur
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              moueri in circumferentiis duorum circulorum paruorum di­
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              ctorum, deſcribendo eas in concauitate nonæ ſphæræ, circa
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              principia arietis, & libræ eiuſdem nonæ ſphæræ, & arietis ecli
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              pticæ nonæ ſphæræ inter centra horum paruorum circulorum
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              dictorum, & circumferentias ſuas. eſt quatuor graduum,
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              XVIII minutorum, & XLIII ſecundorum, & tota diametra
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              eorum circulorum eſt VIII graduum, XXXVII
                <expan abbr="minutorũ">minutorum</expan>
              ,
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              & XXVI ſecundorum. </s>
              <s>adeo quòd ſtellæ fixæ octaui cæli non
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              poſſunt perficere circulationem ſuam uerſus
                <expan abbr="oriẽtem">orientem</expan>
              ad con­
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              trarium nonæ ſphæræ, ſeu primi mobilis, ſed poſſunt tranſmo
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              ueri uerſus orientem per VIII graduum, XXXVII minuto­
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              rum, & XXVI ſecundorum, & redire uerſus occidentem tar
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              dum. </s>
              <s>alia eſt opinio illorum, qui tabulas Alphonſi compoſue
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              runt, & Petri de Apono, ſeu Conciliatoris, & domini Nico­
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              lai Paduani comitis de Comitibus, & Georgii Parbachui, qui
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              uolunt quòd ſint in numero decem ſphæræ, uidelicet quòd ſu
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              pra ſeptem ſphæras ſeptem planetarum ſint tres ſphæræ, uideli
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              cet octaua, nona, & decima, quod ſic
                <expan abbr="oſtẽditur">oſtenditur</expan>
              . </s>
              <s>uidemus in ſtel
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              lis fixis, ſeu in octaua ſphæra triplicem motum: unum ſcilicet
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                <expan abbr="diurnũ">diurnum</expan>
                <expan abbr="uelociſſimũ">uelociſſimum</expan>
              , quo octaua ſphæra
                <expan abbr="cũ">cum</expan>
              ſtellis fixis, quæ ſunt
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              in ea, reuoluitur omni die naturali una reuolutione completa </s>
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          </chap>
        </body>
      </text>
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