Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="063/01/133.jpg"/>
              ut vitrum, gemmæ, lapides,
                <expan abbr="omniaq;">omniaque</expan>
                <foreign lang="grc">θραυ
                  <gap/>
                α</foreign>
              :
                <expan abbr="neq;">neque</expan>
              pars minima
                <lb/>
              reſecari valet, cuiuſmodi eſt thophus. </s>
              <s>
                <expan abbr="Atq;">Atque</expan>
              illa quidem ſolá
                <lb/>
              partium ablatione poliuntur: & ſi quidem poroſa ſint, nullâ
                <lb/>
              ratione ſuam perfectionem aſſequitur politura: quemadmo­
                <lb/>
              dum
                <expan abbr="neq;">neque</expan>
              individua in partes minimas: ablatâ enim parte ma­
                <lb/>
              iori, quàm ſit exceſſus; eadem inæqualitas manet. </s>
              <s>Corporaer­
                <lb/>
              go
                <foreign lang="grc">παχυμέρεα</foreign>
              & quæ glutinosâ viſciditate tenaciùs cohærent,
                <lb/>
              ut cera, pix, tela linea, papyrus; ſolâ levigatione proficiunt:
                <lb/>
              partibus à compreſſione in eodem ſitu manentibus. </s>
              <s>Vnde
                <lb/>
              panni lanei, ob pilos à compreſſione ſurrigentes, non levigan­
                <lb/>
              tur. metalla
                <expan abbr="quoq;">quoque</expan>
              omnia,
                <expan abbr="atq;">atque</expan>
              ligna alia magis, alia minùs le­
                <lb/>
              vigationi parent. </s>
              <s>Quæ enim mollia ſunt,
                <expan abbr="neq;">neque</expan>
              compreſſa
                <lb/>
              manent in eo ſitu, ut medulla ſambuci, aut ſpongia, non levi­
                <lb/>
              gantur. </s>
              <s>Neceſſe enim reniti aliquas partes: quibus aliæ inni­
                <lb/>
              tantur. </s>
              <s>Quod non fit, ſi omnes à compreſſione moveantur
                <expan abbr="ce-dantq;">ce­
                  <lb/>
                dantque</expan>
                <expan abbr="Itaq;">Itaque</expan>
              ligna duriora, cuiuſmodi hebenus, præ alijs levi­
                <lb/>
              gantur. </s>
              <s>Cùm igitur illa corpora vel partium ablatione, vel
                <lb/>
              illarum ſitu permutato ſuperficiem politam conſequantur;
                <lb/>
              manifeſtum levigationem & polituram non
                <expan abbr="abſq;">abſque</expan>
              motu & im­
                <lb/>
              pulſu fieri. </s>
              <s>Cuiuſmodi verò ſit motus, & quâ ratione fiat,
                <lb/>
              nunc dicam, à levigatione incipiendo. </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Eſt autem levigatio motus reciprocus in ſuperficie levigandà, factus
                <lb/>
              à corpore polito, non ſine compreßione.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Niſi enim corpus levigans ſit terſum & politum;
                <expan abbr="nequaquã">nequaquam</expan>
                <lb/>
              aliam ſuperficiem levigare valebit: novâ aſperitate ex illa­
                <lb/>
              rum partium inæqualitate inductâ: dum magis quidem pro­
                <lb/>
              minentes excavant, & veluti ſulcos incidunt: depreſſæ verò
                <lb/>
              tubercula attollunt. </s>
              <s>
                <expan abbr="Itaq;">Itaque</expan>
              videmus ab eiuſmodi ſuperficie
                <lb/>
              aſpcrâ & hamatâ pannos aſperari & villoſos reddi: quò
                <expan abbr="filamẽ-ta">filamen­
                  <lb/>
                ta</expan>
                <expan abbr="atq;">atque</expan>
              illorum textura magis lateant. </s>
              <s>Deinde ſi motus fiat </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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