Borro, Girolamo, De motu gravium et levium, 1575

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    <archimedes>
      <text>
        <body>
          <chap>
            <subchap1>
              <p type="main">
                <s id="s.000201">
                  <pb pagenum="10" xlink:href="011/01/030.jpg"/>
                  <emph type="italics"/>
                put, & cætera ſunt elementa: quoniam hæc (vti diximus)
                  <lb/>
                in alia priora corpora reuertuntur, cum intereunt, ex quibus
                  <lb/>
                facta fuerunt.
                  <emph.end type="italics"/>
                </s>
              </p>
              <p type="main">
                <s id="s.000202">
                  <emph type="italics"/>
                Hæc de elementorum definitione breuiter dixiſſe ſufficiat:
                  <lb/>
                quia elementa nec quatenus
                  <expan abbr="elemẽta">elementa</expan>
                , nec quatenus ex eiſdem
                  <lb/>
                mixta conflantur, in hodiernam hanc quæstionem accerſita
                  <lb/>
                fuerunt: ſed tantum vel vt grauia ſunt, vel leuia; inſtabilem­
                  <lb/>
                que illorum naturam ſurſum, deorſum commeantem perſe­
                  <lb/>
                quemur: eam ob cauſam ſolius elementi quatenus vel graue
                  <lb/>
                eſt, vel leue definitio longa oratione ſuo loco, & tempore con­
                  <lb/>
                texta, narrabitur: adaperta etiam definitione grauitatis,
                  <lb/>
                & leuitatis vt infra videbimus.
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
            <subchap1>
              <p type="head">
                <s id="s.000203">De numero elementorum. </s>
                <s id="s.000204">Caput VII.</s>
              </p>
              <p type="main">
                <s id="s.000205">N
                  <emph type="italics"/>
                vnc ad
                  <expan abbr="aliã">aliam</expan>
                  <expan abbr="quæſtionē">quæſtionem</expan>
                aggredimur, quæ ad numerum
                  <lb/>
                corporum grauium, &
                  <expan abbr="leuiũ">leuium</expan>
                , quæ ſimplicia ſunt, perti
                  <lb/>
                net: præſertim quoniam omnis diſputatio de grauibus,
                  <lb/>
                & leuibus futura eſt. </s>
                <s id="s.000206">Ante igitur inuenire oportet quot ſint,
                  <lb/>
                & illis mediis, quæ ab Ariſtotele vſurpantur, in his quæ de cæ
                  <lb/>
                lo, & degeneratione. </s>
                <s id="s.000207">Ac primo non eſſe vnum tantum gra­
                  <lb/>
                ue, & leue elementum, plures motus recti,
                  <expan abbr="ſecũdum">ſecundum</expan>
                quos plu­
                  <lb/>
                ra elementa mouentur,
                  <expan abbr="oſtẽdunt">oſtendunt</expan>
                . </s>
                <s id="s.000208">Nam quod vnicum, & ſim
                  <lb/>
                plex eſt, ad plura loca, eademque contraria natura ferri non
                  <lb/>
                poſſe, demonſtrat Ariſtoteles libro primo de cælo, & mundo:
                  <lb/>
                ex eo quod vnius corporis ſimplicis vnicus est motus ſimplex:
                  <lb/>
                ſicut vnius motus ſimplicis
                  <expan abbr="vnicũ">vnicum</expan>
                eſt corpus ſimplex. </s>
                <s id="s.000209">Ad hæc
                  <lb/>
                commutatio omnis tolleretur, ſi vnum tantum eſſet elemen­
                  <lb/>
                tum, non enim haberet à quo afficeretur, cum à ſe ipſo affici
                  <lb/>
                non possit; ſed omne, quod afficitur, à contrario afficitur: at
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
          </chap>
        </body>
      </text>
    </archimedes>
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