Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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              leuitatem —— 89, quia in quatuor partes di­
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              ſtinctus ponitur (cum corpori leuiſſimo mo­
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              lem componenti 1/4 tribuatur) diuidatur 89
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              per 4, & erit leuitas ſpecifica in aquâ——
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              22 1/4: Si igitur grauitas aquæ in igne + 100 illi
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              addatur, erit grauitas ſpecifica terreni globi
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              in igne + 77 3/4. In quocunque igitur medio
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              terrenus globus ſemper haberet ſpecificam
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              grauitatem vt + 77 3/4 in medio leuiſsimo, hoc
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              eſt in igne, ſi cæterorum corporum grauitas
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              ad idem medium, hoc eſt ignem, compare­
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              tur. </s>
              <s>Quia verò aëris communis in igne gra­
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              uitas eſt † 94 2/3, grauitas autem ſpecifica glo­
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              bi terreni eſt † 77 3/4, ſequitur terreni globi ſpe­
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              cificam leuitatem in aëre communi eſſe——
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              (16 11/12), quæ ſi per 4 numerum partium duca­
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              tur, dabit abſolutam globi leuitatem in aëre
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              ——67 2/3, vt Galilæus argumentabatur: tellus
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              igitur aere leuior eſſet. </s>
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              <s>
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              Merſ.
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              <s> Qui inter ſalebras ambulat, non
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              ſemper ad numerum greſſus ponit. </s>
              <s>Id I mihi
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              quoquè contigiſſe videtur, qui non ſatis di­
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              lucidè verbis ſum complexus, quod vole­
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              bam. </s>
              <s>Sed mihi nunc per veſtram humani­
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              tatem licebit meam mentem interpretari. </s>
              <s>
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              Toti huic globo, quem incolimus, aquam
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              terramque complectenti, argillæ grauitatem </s>
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