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

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                <pb pagenum="227" xlink:href="010/01/235.jpg"/>
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              <s id="s.001164">
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              Cap. 5. de ae
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elateria
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              eius.</s>
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              De vi per­
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              cap. 22.</s>
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            <p type="margin">
              <s id="s.001166">
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              Cap. 5. de ae
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elateria
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              eius.</s>
            </p>
            <p type="main">
              <s id="s.001167">Poſtea ſubdit:
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              Cylindrus aeris exterioris à quo (vt non­
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              nulli volunt) mercurij extantis ſegmentum ſuſtinetur, ne­
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              que plus, neque minus poteſt ſustinere, igitur ſi ferrum can­
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              dens admoueatur ſegmento vacuo fiſtulæ, nulla eſt ratio cur
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              ſuperficies ſuprema mercurij ſubſidat. </s>
              <s id="s.001168">Subſidit tamen. </s>
              <s id="s.001169">Si
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              verò nix, vel trita glacies admoueatur, mercurius attolli­
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              tur.
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              </s>
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            <p type="margin">
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              Sextum ar­
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              gumentum.</s>
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              PROP. CVIII.
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              </s>
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            <p type="main">
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              Igneæ exhalationes corporeæ vehementisſima agitatione
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              per ſe, cum variè impellendo, &
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              particulas
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              aeris in ſummitate fistulæ Torricellianæ reli­
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              ctas, facilè poſſunt ſubſidentem mercu­
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              rium æquilibratum deprimere.
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                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.001173">REſpondeo, quòd igneæ particulæ nedùm ſe ip­
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              ſas vehementèr agitant, commouentque, ſed
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              præterea aereas quoque particulas in vitri ſummita­
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              te incluſas, vt dictum eſt, vehementiſſimè impellunt;
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              porrò quia quodlibet corpus æquilibratum poteſt à
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              quacumque exigua vi agitari, (vt demonſtrauimus
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              in noſtro opere de vi percuſſionis) ſitque prædictus
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              mercurius in fiſtula æquilibratus cum
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                te</expan>
              cylindro aereo externo, igitur neceſſariò ab inte­
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              ſtina illa agitatione ignearum, & aerearum particu­
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              larum ſuperficies mercurij percuſſa propelli poteſt,
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              & ideò deprimi infra conſuetam eius altitudinem de­
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              bet, è contrà adhibita niue, vel trita glacie, ſpatium
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              illud dum igne priuatur, & deficit quoque agitatio,
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              & reuolutio nedum particularum ignis, ſed etiam̨ </s>
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          </chap>
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