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

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              medium noctis in quarta nocturna fluxus) diſtans ab occaſu
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              per 45 gradus, & à medio noctis ſimiliter. </s>
              <s>fortia pro refluxu
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              ſunt punctum medium inter meridiem, & occaſum in quarta
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              diurna refluxus, diſtans à meridie per 45 gradus, & ab occa
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              ſu ſimiliter: & punctum medium inter medium noctis, & or­
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              tum, in quarta nocturni refluxus, diſtans à medio noctis per
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              45 gradus, & ab ortu ſimiliter: & ſicut puncta debilia diſtant
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              adinuicem per quartam cæli; ita iſta fortia diſtant adinuicem
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              per quartam cæli, habentibus orizontem rectum. </s>
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              <s>Sciendum eſt etiam tertio, quòd, præter iſta octo puncta di­
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              cta, habentibus orizontem rectum, ſunt multa alia puncta æ­
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              quipotentia, ſeu æqualis uirtutis: & talia puncta ſunt omnia
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              puncta cæli æqualiter diſtantia, & quatuor punctis principali­
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              bus cæli, quæ puncta principalia cæli ſunt puncta orientis, pun
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              ctum occidentis, punctum meridiei, & punctum mediæ no­
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              ctis, uel à quatuor punctis fortibus cæli, quod eſt idem: in
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              quartis tamen contrariæ operationis. </s>
              <s>ſunt enim omnia talia
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              puncta æqualis uirtutis, ſeu æquipotentia in mouendo aquam
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              maris: in orizonte autem obliquo aliter eſt, ut infra uidebitur. </s>
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              <s>Sciendum eſt quarto, quòd ſol, & luna omni menſe ſunt ſi­
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              mul in eodem ſigno, gradu, & minuto; & iſte ſitus appella­
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              tur coniunctio lunæ cum ſole. </s>
              <s>inde ad octo dies, uel circa lu­
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              na eſt elongata à ſole per motum eius proprium per quartam
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              partem cæli: & hæc elongatio appellatur quadratura prima
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              lunæ cum ſole. </s>
              <s>inde ad 14 dies, uel circa, eſt elongata à ſole,
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              per aliam quartam partem cæli, & ſic per medietatem cæli. </s>
              <s>&
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              hæc diſtantia appellatur oppoſitio lunæ cum ſole, ſeu plenilu
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              nium. </s>
              <s>inde ad 21 dies, uel circa, eſt elongata ab oppoſitione
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              eius cum ſole, ſeu plenilunio, per aliam quartam partem cæ­
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              li, accedens ad ipſam ſolem. </s>
              <s>& hæc diſtantia appellatur qua­
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              dratura ſecunda lunæ cum ſole. </s>
              <s>& tunc luna diſtat à ſole per
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              quartam partem cæli, ſicut diſtabat in quadratura prima.
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              </s>
              <s>accedit ad coniunctionem eius cum ſole. </s>
              <s>inde ad 20 dies, uel
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              circa luna eſt iterum cum ſole, & ei coniuncta, ſicut pri­
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              mo fuit. </s>
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