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

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            <p type="main">
              <s>
                <pb xlink:href="063/01/132.jpg"/>
              fiat eiuſdem plani; neceſse ubi ex
                <emph type="italics"/>
              a
                <emph.end type="italics"/>
              promovit in
                <emph type="italics"/>
              g,
                <emph.end type="italics"/>
              ipſum
                <emph type="italics"/>
              b
                <emph.end type="italics"/>
                <lb/>
              revolui in
                <emph type="italics"/>
              a.
                <emph.end type="italics"/>
              Similiter ubi
                <emph type="italics"/>
              b
                <emph.end type="italics"/>
              perventurum eratex
                <emph type="italics"/>
              a
                <emph.end type="italics"/>
              in
                <emph type="italics"/>
              g,
                <emph.end type="italics"/>
              ipſum
                <lb/>
                <emph type="italics"/>
              c
                <emph.end type="italics"/>
              attinget punctum
                <emph type="italics"/>
              a.
                <emph.end type="italics"/>
              Quòd ſi maior ſit motus circuli, quàm
                <lb/>
              eiuſdem centri; contingit ipſum retroagi. </s>
              <s>Nam cùm ex
                <emph type="italics"/>
              a
                <emph.end type="italics"/>
                <lb/>
              movetur in
                <emph type="italics"/>
              g;
                <emph.end type="italics"/>
              motus in peripheriâ fit per maius
                <expan abbr="ſegmentũ">ſegmentum</expan>
                <emph type="italics"/>
              ab:
                <emph.end type="italics"/>
              ac
                <lb/>
              proinde orbiculus tangit planum in puncto medio inter
                <emph type="italics"/>
              b
                <emph.end type="italics"/>
              &
                <emph type="italics"/>
              c.
                <emph.end type="italics"/>
                <lb/>
              Demum ſi maior ſit motus centri quàm gyrationis; videbitur
                <lb/>
              motus rectus, & punctum
                <emph type="italics"/>
              b
                <emph.end type="italics"/>
              inter
                <emph type="italics"/>
              a
                <emph.end type="italics"/>
              &
                <emph type="italics"/>
              g.
                <emph.end type="italics"/>
              Inde ergo ratio reddi­
                <lb/>
              tur; quòd motus centri ab illatâ plagâ deflectat à lineâ rectâ
                <lb/>
                <emph type="italics"/>
              AI
                <emph.end type="italics"/>
              etiam ante grad: 60. </s>
              <s>Cùm enim motus orbiculi circularis
                <lb/>
              in plano firmetur,
                <expan abbr="eaq;">eaque</expan>
              ratione motui centri reluctetur; ne­
                <lb/>
              ceſſe motum mixtum inde procreari. </s>
            </p>
            <figure id="id.063.01.132.1.jpg" xlink:href="063/01/132/1.jpg" number="37"/>
            <p type="main">
              <s>
                <emph type="center"/>
              De Levigatione & Politura.
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              </s>
            </p>
            <p type="main">
              <s>COrpora polita dicuntur, quæ ſuperficiem habent illius fi­
                <lb/>
              guræ, quâ terminantur, æquabilem: ut in cubo perfectè
                <lb/>
              planam, in globo ſphæricam. </s>
              <s>His opponitur aſperum ſeu ſca­
                <lb/>
              brum: cuius ſuperficies partes habet inæqualiter ſitas, magis
                <lb/>
              & minùs depreſſas aut elevatas. </s>
              <s>
                <expan abbr="Neq;">Neque</expan>
              omnia corpora æqua­
                <lb/>
              liter: ſed alia magis, alia minùs, alia nullâ induſtriâ poliuntur:
                <lb/>
              ut thophus, pumex, ſuber, panni lanei &c. </s>
              <s>Et cùm ſcabrities
                <lb/>
              ſeu inæqualitas à duobus proveniat: cùm vel partes inſunt
                <lb/>
              verrucoſæ, vel pori ſeu cavernulæ ſuperficiem perforantes,
                <lb/>
              quantum vis ſenſum lateant: polituram obtinemus contrariâ
                <lb/>
              affectione: verrucarum quidem, & quæ prominent, ablatione:
                <lb/>
              ſpatiorum verò inanium repletione. </s>
              <s>Quòd ſi eiuſmodi um­
                <lb/>
              bilici & verruculæ tolli nequeant: aut lacunæ expleri, impo­
                <lb/>
              libile dicetur corpus, Talia ſunt
                <foreign lang="grc">ἀπιε
                  <gap/>
                ὰ</foreign>
              , & quæ dividi neque­
                <lb/>
              unt in partes minimas: quia
                <expan abbr="neq;">neque</expan>
              compreſſioni cedunt ad po­
                <lb/>
              rum ſolidandum, receptâ in eas vacuitates parte magis preſsâ: </s>
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