Valerio, Luca, De centro gravitatis solidorvm libri tres
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              PROPOSITIO XXXII.
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              <s>Si duarum prædictarum figurarum circa com­
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              munem axim, vel diametrum, vel alterius diame­
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              trum alterius axim, baſes, & quotcumque ſectio­
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              nes quales diximus, binæ in eodem plano fue­
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              rint proportionales; idem punctum in diametro,
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              vel axe erit vtriuſque centrum grauitatis. </s>
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              <s>Sint duæ prædictæ figuræ ABC, DBE, circa eandem
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              diametrum, vel axim BF. figuræ autem ABC ſit cen­
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              trum grauitatis G, nempe in linea BF. </s>
              <s>Dico G eſſe
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              centrum grauitatis
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              figuræ DBE. ſi
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              enim non eſt, ſit a­
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              liud punctum H,
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              quod cadat primo
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              ſupra punctum G.
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              <s>Figuræ igitur AB
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              C, figura circum­
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              ſcribatur qualem
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              diximus ex cylin­
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              dris, vel cylindri
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              portionibus, vel pa­
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              rallelogrammis æ­
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              qualium
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              cuius centri graui­
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              tatis
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              K
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              diſtantia à
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              centro G, figuræ ABC ſit minor quàm recta GH: & figu­
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              ræ DBE, figura circumſcribatur ex cylindris, vel cylindri
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              portionibus vel parallelogrammis æqualium altitudinum,
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              multitudine æqualium ijs, ex quibus conſtat ipſi ABC, </s>
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