Biancani, Giuseppe, Aristotelis loca mathematica, 1615

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    <archimedes>
      <text>
        <body>
          <pb pagenum="280" xlink:href="009/01/280.jpg"/>
          <chap>
            <p type="head">
              <s id="s.004975">
                <emph type="italics"/>
              PROBLEMATA NONNVLLA
                <lb/>
              De Oculi Pupilla.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s id="s.004976">1. Cvr ei Pupillæ nomen inditum eſt? </s>
              <s id="s.004977">Admiratione ſanè non caret
                <lb/>
              apud præcipuas linguas, miro quodam conſenſu, idem etymon
                <lb/>
              obtinere: ſcilicet denominatam eſſe ab imaguncula illa, quæ
                <lb/>
              veluti parua puppa, ſeu pupula, ſeu pupilla, qualis in figura
                <lb/>
              ſpectatur, perpetuò in paruo hoc vuæ circello ſpectatur. </s>
              <s id="s.004978">propter hanc igitur
                <lb/>
              puppam Hebræi circellum G B I, Bath, ideſt filiolam, Græci
                <foreign lang="grc">κορην</foreign>
              , ideſt puel­
                <lb/>
              lam, Latini demum pupillam cognominarunt.</s>
            </p>
            <p type="main">
              <s id="s.004979">2. Atqui vnde imaguncula hæc, quæ in oculis noſtris perpetuò ſpectatur?
                <lb/>
              </s>
              <s id="s.004980">ſcilicet ob terſitiem, & ſphæricitatem cornea eſt inſtar
                <expan abbr="cõuexi">conuexi</expan>
              ſpeculi, quod
                <lb/>
              ſpectanti imaginem reddat, quam ergò videmus in aliorum oculis puppam,
                <lb/>
              noſtra eſt imago, quæ propterea tamen parua eſt, quoniam oculus ſpeculum
                <lb/>
              paruum, ac conuexum ſimul eſt, cuius eſt imagines rebus ipſis multò mino­
                <lb/>
              res reflectere. </s>
              <s id="s.004981">vt in tractatu de Speculis optici demonſtrant.</s>
            </p>
            <p type="main">
              <s id="s.004982">3. Cùm tota cornea, quæ Iris maior eſt, ſit æquè torſa, ac perpolita, cur
                <lb/>
              non æquè tota hanc pupulam oſtendit? </s>
              <s id="s.004983">ſed è regione minoris Iridis ferè tan­
                <lb/>
              tum? </s>
              <s id="s.004984">cauſa eſt in promptu, quia nimirum ſpeculum debet eſſe omnis colo­
                <lb/>
              ris expers, ne colores ſpeculi coloribus imaginum miſceantur; taliſque eſt
                <lb/>
              Iris minor,quæ etiamſi videatur nigra, non tamen verè colorata eſt, vt mox
                <lb/>
              oſtendam: at verò maiori Iridi colores vueæ ſubſunt, qui ne ſpeculi officio
                <lb/>
              fungatur, ſunt impedimento. </s>
              <s id="s.004985">eſt præterea Iris minor admodum opacata,
                <lb/>
              quæ altera conditio, maximè ſpeculo neceſſaria eſt: illa enim nigredo Iri­
                <lb/>
              dis minoris, ſeu pupillæ, non nigredo, ſed opacitas eſt, vt dicetur poſtea.</s>
            </p>
            <p type="main">
              <s id="s.004986">4. Cùm iam
                <expan abbr="cõſtet">conſtet</expan>
              foramini vuæ G H I, à pupilla in ipſo verſante nomen
                <lb/>
              inditum eſſe; nec non vnde ſit ea pupilla, & cur tam parua; quæritur iam,
                <lb/>
              quid ſit pupilla, ſeu Iris minor, an ſcilicet ſit foramen illud vueæ, an potius
                <lb/>
              chriſtallinus humor, qui in illud intruditur,
                <expan abbr="vacuumq́">vacuumque</expan>
              ; illius replet? </s>
              <s id="s.004987">Re­
                <lb/>
              ſpondeo, Ariſt. humorem ipſum
                <expan abbr="chriſtallinũ">chriſtallinum</expan>
              appellaſſe pupillam: Galenum
                <lb/>
              tum chriſtallinum, tum foramen ipſum: aptè tamen
                <expan abbr="vtrumq;">vtrumque</expan>
              dici exiſtimo.
                <lb/>
              </s>
              <s id="s.004988">Chriſtallinum quidem & quia replet vacuum illud,
                <expan abbr="atq;">atque</expan>
              è regione illius pu­
                <lb/>
              pillæ imaguncula ſpectatur. </s>
              <s id="s.004989">foramen verò, quia terminos illius rotunditatis
                <lb/>
              circumſcribat. </s>
              <s id="s.004990">vnde aptius fortè dixeris, vtrumque, chriſtallinum ſcilicet,
                <lb/>
              & foramen veluti partes ad totam pupillam conſtituendam eſſe neceſſaria:
                <lb/>
              ita vt nihil aliud ipſa ſit, quàm ſuperficies illa chriſtallini; quæ vueæ fora­
                <lb/>
              mine continetur.</s>
            </p>
            <p type="main">
              <s id="s.004991">5. Cur in omnibus hominibus nigra videtur? </s>
              <s id="s.004992">cum tamen nigri nihil ibi
                <lb/>
              eſſe ex anotomia conſtet: imò ibi chriſtallinus eſt omninò pelluidus; & vl­
                <lb/>
              tra,
                <expan abbr="citraq́">citraque</expan>
              ; alij duo humores, vitreus, & aqueus, æquè tranſparentes,
                <expan abbr="atq;">atque</expan>
                <lb/>
              omnis nigredinis expertes. </s>
              <s id="s.004993">vnde igitur nigredo illa? </s>
              <s id="s.004994">Dicendum eſt nigre­
                <lb/>
              dinem hanc non eſſe veram, ſed apparentem,
                <expan abbr="eamq́">eamque</expan>
              ; ex interna oculi opa­
                <lb/>
              citate; opacitatem verò ex foraminis paruitate, quæ lumen non admittat,
                <lb/>
              prouenire: quotidiana enim nos docet experientia feneſtellas, & huiuſmodi </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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