Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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              mediam noctem Lunâ infra horizontem
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              poſitâ, nubeculam quandam lucidam prope
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              Meridianum fere uſque ad Zenith diffuſam
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              quæ conſider at is omnibus non poter at niſi à
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              ſole illuminari; ideoque altior eſſe debuit
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              tota umbr a terræ. </s>
              <s>Addit
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              (continues
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              Ricci­
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              olus) ſimile quid eveniſſe Michaeli Angelo
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              Riccio apud Sabinos verſanti nempe viro
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              in Matheſi eruditiſsimo.
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              <s>Various Obſervations made at the
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              feet, tops, and interjacent parts of high
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              Mountains, might perchance ſomewhat
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              aſſiſt us to make an eſtimate in what pro­
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              portion, if in any certain one, the higher
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              Air is thicker then the lower, and gheſs
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              at the diſ-form conſiſtence, as to laxity
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              and compactneſs of the Air at ſeveral
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              diſtances from us. </s>
              <s>And if the difficul­
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              ties about the refractions of the Celeſtial
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              Lights, were ſatisfactorily determin'd,
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              that might alſo much conduce to the pla­
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              cing due limits to the Atmoſphere (whoſe
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              Dimenſions thoſe Obſervations about
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              Refractions ſeem hitherto much to con­
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              tract.) But for the preſent we dare not
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              pronounce any thing peremptorily con­
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              cerning the height of it, but leave it to
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              further inquiry: contenting our ſelves to
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              have manifeſted the miſtake of divers </s>
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