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

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              5425, Aëris communis grauitas grana o,
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              Aëris igniti grauitas grana o——4, quoniam
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              aër ignitus non grauitat ſed leuitat, & com­
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              munis non grauitat aut leuitat. </s>
              <s>In noſtro
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              igitur aëre communi aqua ad aërem ignitum
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              eſt in pondere vt 5425 ado——4. Et quo­
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              niam aquæ grauitatem in aëre communi po­
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              nimus 5 1/3, fiat vt 5425 ad o——4, ita 5 1/3 ad
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              o——(64/16275). Eſt ergo aëris igniti grauitas in
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              aëre communi o——(64/16275). Atqui aëris com­
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              munis grauitas in aquâ eſt o——5 1/3, igitur ſi
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              iungantur hæ differentiæ grauitatum, erit
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              o——(5 5489/16275) grauitas aëris igniti in aquâ, hoc
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              eſt leuitas. </s>
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              <s>Quod verò hac methodo ritè inueſtigata
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              ſit leuitas aeris igniti in aquâ, conſtabit hoc
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              exemplo. </s>
              <s>Grauitas Mercurii eſt 71 1/2, aquæ
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              5 1/3, olei 4 3/4: igitur grauitas olei in aquâ eſt
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              o——(7/12), & grauitas aquæ in Mercurio eſt
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              o——(66 2/12). & ſi differentiæ iſtæ iungantur,
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              erit grauitas olei in mercurio o——(66 9/12); quæ
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              eadem eſt cum illâ, qua immediatè oleum
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              cum mercurio comparatur, & eſt 4 3/4 ——
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              71 1/2. Si igitur aeris igniti grauitas in aërę
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              communi, iungatur aëris communis graui­
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              tati in aquâ, ritè habetur aëris igniti grauitas </s>
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