Cardano, Girolamo, De subtilitate, 1663

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            <p type="main">
              <s id="s.014087">
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              partibus ſex, aut paulò pluribus vltra æqui­
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              noctium verſus auſtrum, ex Ptolemæi ſen­
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              tentia: quanquam ille montes Lunæ addu­
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              cat. </s>
              <s id="s.014088">Inde
                <expan abbr="progrediẽs">progrediens</expan>
              ex altiſſimis locis
                <expan abbr="deſcẽ-dit">deſcen­
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                dit</expan>
              fragore maximo, atque id bis. </s>
              <s id="s.014089">Vocant lo­
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              ca hæc confragoſa cataractas: ſunt enim al­
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              tiora montium loca, è quibus deſcendit flu­
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              uius ſpuma maxima. </s>
              <s id="s.014090">Harum altera maior,
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              reliqua vocatur minor. </s>
              <s id="s.014091">Poſt quas in modum
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              maximi latus diffunditur, concipiens inſu­
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              las ſeptingentas, quarum maxima Meroë
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              vocatur, vltra Cancri circulum verſus æqui­
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              noctialem partibus circiter nouem: in qua
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              etiam ciuitas eiuſdem nominis eſt. </s>
              <s id="s.014092">Pòſt col­
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              lectus denuò, in alueumque rediens proce­
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              dit ſeptem oſtiis in mare: ab initio vbi ori­
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              tur vſquequo mare attingit, rectà progre­
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              diens ex Auſtro in Boream. </s>
              <s id="s.014093">In Nilum pauci,
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              vel omninò nulli influunt fluuij. </s>
              <s id="s.014094">Sed 17. die
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              Iunij poſtquam Sol apogeum ſuum ſupera­
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              uit, incipit intumeſcere, exienſque pro­
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              prium alueum, Ægypti terram inundat ac
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              tegit, ſic vt feræ pleræque intereant, iumen­
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              ta, & homines altioribus ſe locis tueantur:
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              creſcitque hæc inundatio 40. diebus, donec
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              ſcilicet Sol ad medium Leonis peruenerit:
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              ab ea die totidem diebus decreſcens, Ægyp­
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              tum ſiccam relinquit.
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              </s>
            </p>
            <p type="margin">
              <s id="s.014095">
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              Nilus cur
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              inundet
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              Ægytum.</s>
            </p>
            <p type="margin">
              <s id="s.014096">
                <margin.target id="marg1882"/>
              Cauſæ tres
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              generales
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              inundatio­
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              num.</s>
            </p>
            <p type="main">
              <s id="s.014097">Hæc igitur ita ſe habent. </s>
              <s id="s.014098">Verùm ante­
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              quam cauſam horum inquiramus, generali­
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              ter inundationum ratio quærenda eſt: nam &
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              alij fluuij agros inundant, vt Eridamus in
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              Italia, & Pannonia Hiſter ſeu Danubius.
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              </s>
              <s id="s.014099">Omnis igitur inundationis cauſa, aut eſt
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              humilitas riparum, aut copia aquarum, aut
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              ventus aduerſus mortui aquæ, vel etiam
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              tranuerſus, aut maris æſtus atque recurſus
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              prohibens aquam in mare effundi. </s>
              <s id="s.014100">Humili­
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              tas riparum fit dehiſcente terra. </s>
              <s id="s.014101">Sed aqua­
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              rum copia fit vel aucto fonte, vel niuibus
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              liqueſcentibus, aut pluuiis. </s>
              <s id="s.014102">Venti verò dum
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              aduerſus aquæ motum feruntur, prohibent
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              ad eam effluere, & cogentes eam intumeſ­
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              cere flumen faciunt: effunditurque aqua
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              etiam quandoque ex artioribus ripis. </s>
              <s id="s.014103">Quili­
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              bet autem ventus aquas mouet, quia vel deſ­
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              cendit ( vel rectà fertur. </s>
              <s id="s.014104">Qui deſcendit,
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              aquam exagitat, vtpote AC, dum enim de­
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                <figure id="id.016.01.314.1.jpg" xlink:href="016/01/314/1.jpg" number="159"/>
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              primit verſus E, pars, CE, locum occupans,
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              occupat EF, igitur pars EF, aſcendit ad FG,
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              atque ita aqua intumeſcit, & effunditur.
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              </s>
              <s id="s.014105">Quòd ſi ventus rectà procedat ex BC, quia
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              locus F, eſt altior H, aqua impellitur. </s>
              <s id="s.014106">Aqua
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              enim rotunda eſt, vt in vrceis vides. </s>
              <s id="s.014107">Qua
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              etiam ex cauſa flumina, & lacus procul vi­
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              dentur: aut enim ex alto ſpectamus, ob id­
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              que videmus aquas: aut ex plano, videmuſ­
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              que etiam, quoniam aqua rotunda eſt. </s>
              <s id="s.014108">Ma­
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              nifectum eſt autem quòd duplex eſt motus
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              rectus: alter quidam mathematicus, qui
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              fit per breuiorem lineam, & hic fit ab im­
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              pulſu, atque ſic venti mouentur: alter ſecun­
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              dùm naturam, atque hic eſt qualis aquæ in
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              circuli periferia. </s>
              <s id="s.014109">Cùm igitur aqua motu cir­
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              culari moueatur, ventus recto, ex quocunque
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              vento neceſſe eſt fieri perturbationem in
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              aqua. </s>
              <s id="s.014110">Rotunditas igitur aquæ tempeſtatum
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              cauſa eſt. </s>
              <s id="s.014111">Cùm verò vel a latere, vel aduer­
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              ſus motum aquæ flat, & magnus fuerit, fiet
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              inundatio: & vbi latitudo ſit ad, tempeſtas.
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              </s>
              <s id="s.014112">Semper autem ventus in flumine aliqua in
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              parte, vel ex aduerſo fluminis, vel à latere
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              flat, quia flumen ſinuosè torquetur, vt an­
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              gues: ideò niſi ventus fuerit admodum le­
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              nis, aut aqua pauca, inundatio aliqua in par­
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              te fiet. </s>
              <s id="s.014113">Velut flumen ſit ABC, ventus rectà
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                <figure id="id.016.01.314.2.jpg" xlink:href="016/01/314/2.jpg" number="160"/>
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              ex DE, feratur, tranuerſim quidem in FGH,
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              feretur, & ſi aqua plurima fuerit, inundatio­
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              nem pariet, aliter non. </s>
              <s id="s.014114">At qui fertur ex D, in
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              CB, cùm aduerſus aquæ motum neceſſariò
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              inundationem pariet. </s>
              <s id="s.014115">Ob id igitur flante
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              vento aliquibus in locis inundatio fit, aliis
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              in locis ſiccantur flumina, fit igitur inunda­
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              tio maior, aut ob aquarum multitudinem,
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              aut venti magnitudinem, aut quia ſurſum
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              venit impellens vi aquas, atque quaſi effo­
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              diens, & hauriens illas. </s>
              <s id="s.014116">Eadem ratio tempe­
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              ſtatum igitur, & magnitudinis earum ſcili­
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              cet aquarum multitudo: vnde maior in mari,
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              quàm lacubus, & lacubus quàm fluuiis, &
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              magnis fluuiis, quàm paruis. </s>
            </p>
            <p type="main">
              <s id="s.014117">Cùm igitur ventus vnus fuerit, & rectà
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              proceſſerit, vt ſecundum BC, lineam prioris
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              figuræ, non ſubmergetur. </s>
              <s id="s.014118">Si verò obliquus,
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              id eſt, ex alto deſcenderit: tunc immenſam
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              aquarum copiam voluens periculum ingens
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              affert. </s>
              <s id="s.014119">Quòd ſi duo fuerint contrarij, vt AF,
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                <figure id="id.016.01.314.3.jpg" xlink:href="016/01/314/3.jpg" number="161"/>
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              & BF, ſubmergetur nauis, quoniam non po­
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              terit procedere altero illum contra niten­
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              te: & ſi nauis ferantur ex C, in F, ventis
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              latera verberantibus, ſubuerteretur. </s>
              <s id="s.014120">Me­
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              lius verò eſt: vt nauis feratur ex D, in F,
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              vbi A F, ventus ſit validior BF: ſemper
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              enim tutior eſt nauis, quæ ſecundùm ven­
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              tum validiore fertur, quàm quæ aduer­
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              ſus, Quòd ſi tres venti fuerint, A F, B F,
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              & E F, aliquiſque eorum ex alto veniat,
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              validior autem ſit AF, omninò neceſſe eſt
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              nauim ſubmergi, quoniam ſecundùm DF,
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              ferri non poteſt, quia ab EF, vento euer­
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              teretur. </s>
              <s id="s.014121">Neque ſecundum EF, euerte­
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              tur enim ab AF, Secundum G F, autem
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              ferri non poteſt, reluctante F E. </s>
              <s id="s.014122">In </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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