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

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              Cap. 1. de
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              momentis
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              grauium in
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              fluido inna­
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              tantium.</s>
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              SVPPOSITIO I.
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            <p type="main">
              <s id="s.000037">Suppono primò quòd quodlibet corpus, ſiuè den­
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              ſum, ſiuè fluidum, ex ijs quæ globum terra-queum̨
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              componunt, graue eſt, exercetque vim ſeù conatum
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              ſuæ grauitatis, etiam ſi in fluido ſibi aut homogeneo,
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              aut non, conſtituatur. </s>
              <s id="s.000038">hoc autem ſuo loco euidentiſ­
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              ſimis rationibus, ac experimentis confirmabitur. </s>
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              <s id="s.000039">
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              SVPPOSITIO II.
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            <p type="main">
              <s id="s.000040">Secundo loco ſuppono vim, ſeù conatum, quo flui­
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              da nituntur ſeſe vnire ſphæræ terraqueæ, effici per
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              lineas perpendiculares ad ſuperficiem horizontis. </s>
              <s id="s.000041">&
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              hoc patet quia quodlibet graue naturali inſtinctu co­
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              natur ad centrum terræ accedere via breuiſſima, igi­
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              tur directio prædicti motus, ſeù conatus compreſſiuus
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              efficietur per ſemidiametros eiuſdem terræ, hæ verò
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              perpendiculares ſunt ad ſuperficiem horizontalem,
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              quæ ſphæricè ipſam terram comprehendit, igitur ma­
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              nifeſtum eſt quòd motus ſeù conatus compreſſiuus
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              omnium partium fluidi per lineas ad horizontem per­
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              pendiculares efficitur. </s>
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              SVPPOSITIO III.
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              <s id="s.000043">Tertiò quod libet corpus graue eſt impoſſibile vt
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              moueatur motu ſpontaneo, & naturali, quando ad
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                trum</expan>
              telluris minimè approximari poteſt. </s>
              <s id="s.000044">hoc mani­
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              feſtum eſt quia cùm omnes partes terrenæ vt graues
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              naturali inſtinctu ad terræ centrum accedere conen-</s>
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