Valerio, Luca, De centro gravitatis solidorum, 1604

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              <s>
                <pb xlink:href="043/01/135.jpg" pagenum="48"/>
              grauitatis, nempe in linea BD, ſit propinquius baſi AC,
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              ſiue termino D, quàm prædictæ datæ figuræ circumſcriptæ
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              centrum grauitatis, Omnium enim cylindrorum, vel cy­
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              lindri portionum, vel parallelogrammorum, ex quibus con­
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              ſtat prædicta data figura circumſcripta ſint axes, vel quæ
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              oppoſita latera coniungunt rectæ BL, LM, MD, qui­
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              bus ſectis bifariam in punctis N, O, P, ac planis per ea
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              ſiue rectis tranſeuntibus baſi AC parallelis, ſecantibus­
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              que dictos cylindros, vel cylindri portiones, vel pa­
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              rallelogramma, compleatur & figuræ ABC circumſcri­
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              batur altera figura
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              vt prior, quæ ob ſe­
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              ctiones factas com­
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              ponetur ex duplis
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              multitudine cylin­
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              dris, vel cylindri por­
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              tionibus, vel paralle­
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              logrammis ęqualium
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              altitudinum, eorum
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              ex quibus conſtat da­
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              ta figura circumſcri­
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              pta ſin
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              autem hi cy­
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              lindri, aut reliqua,
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              quæ diximus QR,
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                <figure id="id.043.01.135.1.jpg" xlink:href="043/01/135/1.jpg" number="105"/>
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              ES, TV, GX, ZI, AY. </s>
              <s>Quoniam igitur cylindro­
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              rum, vel cylindri portionum, vel parallelogrammorum quæ
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              ſunt circa figuram ABC, minor eſt proportio QR ad ES,
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              quàm ES, ad TV, propter ſectiones circulos, vel ſimiles
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              ellipſes, vel rectas lineas, &
                <expan abbr="æqualitatẽ">æqualitatem</expan>
                <expan abbr="altitudinũ">altitudinum</expan>
              , & figuræ
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              propoſitæ
                <expan abbr="naturã">naturam</expan>
              . </s>
              <s>Sed
                <expan abbr="eadẽ">eadem</expan>
              ratione minor eſt proportio ES
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              ad TV, quàm TV, ad GX; multo ergo minor proportio erit
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              QR ad ES, quam TV ad GX: & componendo, minor
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              proportio QR, ES, ſimul ad ES, quàm TV, GX, ſimul
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              ad GX. ſed vt GX ad GH, ita eſt ES ad EF; ex æqua-</s>
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