Valerio, Luca, De centro gravitatis solidorvm libri tres
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              COROLLARIVM.
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              <s>Ex omnibus demonſtrationibus eorum, quæ in
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              hoc ſecundo libro propoſuimus, manifeſtum eſt
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              omnium ſupra dictorum corporum centra grauita
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              tis inuenire: quæ cum que enim in modum theore­
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              matis propoſuimus, eadem tanquam problema­
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              ta proponi, & ijſdem demonſtrationibus abſolui
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              poſſunt. </s>
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              <s>Idem dico de ijs, quæ in primo, & tertio ſequenti libro
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              demonſtrauimus. </s>
              <s>Porro autem multa lemmata inſtituto
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              præcipuo neceſſaria, & alia addita inuentio ſatis iucun­
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              da centri grauitatis conoidis, & portionis conoidis parabo­
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              lici, & hyperbolici, & fruſti vtriuſque ne ſecundus hic liber
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              nimis longus, & confuſus exiſteret, tertium requirebant.
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              </s>
              <s>Quem quidem meorum ſtudiorum autumnalium fructum
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              Anni à partu Virginis MDCIII. cum SS. </s>
              <s>Clementis
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              Pont. Max. </s>
              <s>auctoritate, & Petri eius Nepotis Cardinalis
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              ampliſſimi Aldobrandini iuſſu bene de me merentium Ma­
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              thematicam ſcientiam, & Philoſophiam ciuilem in almo
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              Vrbis Gymnaſio profiterer, in eorum gratiam compoſui,
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              qui me centra grauitatis portionum ſphæroidis imperfe­
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              cti operis crimine condemnandum omittere nolebant; cu­
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              ius prouinciæ iuuante Deo, & mira Mathematicæ ſtudio­
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              ſis ſatisfaciendi voluntate, multas difficultates ita ſupe­
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              raui, vt vno menſe Octobri plus præſtiterim, quam à me
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              requiſiſſent. </s>
              <s>ſiquidem quæ de ſphæræ portionibus in hoc
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              libro proprijs eius figuræ rationibus, eadem in ſequen­
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              ti aliis communibus cuilibet portioni ſphæræ, & ſphæroi­
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              dis tum lati, tum oblongi abſciſſæ vno, vel duobus planis
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              æque inter ſe diſtantibus, & vtcumque in figuram in cideu-</s>
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