Archimedes
,
Archimedis De iis qvae vehvntvr in aqva libri dvo
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& </
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centrum, & </
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plano per axem, quod ſectionem faciat triangulum a b c:
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Dico punctum e coni, uel coni portionis, grauitatis
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eſſe centrum. </
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ducatur e f extra figuram in g. </
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habet g e ad e f, habeat baſis coni, uel coni portionis, hoc
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eſt circulus, uel ellipſis circa diametrum a c ad aliud ſpa-
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cium, in quo h. </
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batur rectilinea figura a k l m c n o p, ita ut quæ relinquũ-
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tur portiones ſint minores ſpacio h: </
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mis baſim habens rectilineam figuram a K l m c n o p, & </
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axem b d; </
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e, ut iam demonſtrauimus. </
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minores ſpacio h, circulus, uel ellipſis ad portiones ma-
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iorem proportionem habet, quam g e a d e f. </
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lus, uel ellipſis ad figuram rectilineam ſibi inſcriptam, ita
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conus, uel coni portio ad pyramidem, quæ figuram rectili-
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neam pro baſi habet; </
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