Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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            <p type="main">
              <s id="s.000636">
                <pb pagenum="127" xlink:href="010/01/135.jpg"/>
              aeream lanuginem, ſeu cruſtam continguam, & con­
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                <arrow.to.target n="marg157"/>
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              nexam LG, verùm lanci oppoſitæ B, adhæret ſphæ­
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              ra aerea HK denſior, vt potè non excalefacta à ferro
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              feruente; hinc fit vt ſumma lancis B vnà cum adnexa
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              cruſta ambientis aeris HK grauior ſit ærea lamina A
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              vnà cum rariori lanugine aeris adhærentis LG.
                <expan abbr="Mirũ">Mirum</expan>
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              igitur non eſt, quòd a maiori pondere libræ extremi­
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              tas E deprimatur, & ei oppoſita D eleuetur. </s>
              <s id="s.000637">Eodem
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                <arrow.to.target n="marg158"/>
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              ferè modo, vt dicebam priùs, aer cubiculi circą,
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              caminum cùm ſit valdè denſus, comparatus cum
                <expan abbr="flã-ma">flam
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                ma</expan>
              , & aere calefacto intra caminum exiſtente, &
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              ideò valdè rarefacto, mirum non eſt ſi proptèr illius
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              grauitatem excedentem ſursùm exprimat leuiorem
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              flammam, acremque adhærentem paritèr rarum. </s>
              <s id="s.000638">Eſt
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              igitur euidentiſſimum in hiſce experimentis, quòd
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              aer
                <expan abbr="flammã">flammam</expan>
              ambiens, nedùm eam exprimit, ſed
                <expan abbr="bonã">bonam</expan>
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              partem aeris
                <expan abbr="rarefactã">rarefactam</expan>
              vnà cum
                <expan abbr="flãma">flamma</expan>
              impellit quo­
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              que ſursùm. </s>
              <s id="s.000639">Sed dicet aliquis, cur circa flammam̨
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              lucernæ non obſeruatur prædictus ventus? </s>
              <s id="s.000640">reſpon­
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              detur non eſſe æquè ſenſibilem, quia nimirum lucer­
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              næ flamma non inſinuatur intra fiſtulam aliquam, vt
                <lb/>
              eſt canalis camini, qui exitum habet extra
                <expan abbr="cubiculũ">cubiculum</expan>
              ;
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              cùm ergo lucernæ flamma vndique ambiatur ab aere
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              aperto abſque euidenti cun motione eam impellere
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              ſursùm poteſt exprimendo, nimirùm facto breui cir­
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              cuitu à vertice flammæ vſque ad eius baſim, & ob
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              flammę exiguitatem parua quoque eſt moles aeris ei
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              contigua, quę agitatur, & conuoluitur, & hæc eſt
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              ratio, quare circa lucernæ flammam ventus non ob-</s>
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          </chap>
        </body>
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