Fabri, Honoré, Dialogi physici in quibus de motu terrae disputatur, 1665

Table of figures

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                <figure id="id.025.01.169.1.jpg" xlink:href="025/01/169/1.jpg" number="61"/>
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              cies KI in canaliculo verò ſit D ; volam manus admove
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              eri BC cum modica preſſione; ſtatim aqua per canalicu­
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              lum altiùs aſſurgit versùs F ; vbi verò repentino motu ma­
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              nus ab ore AB, amovent, deſcendit aqua præceps in G.
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              ſed ſtatim denuo aſſurgit versùs F. </s>
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              <s id="s.001893">
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              Auguſtin.
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              <s id="s.001894"> Ex præmiſſis huius experimenti facilè ratio­
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              nem afferam, nempe aër vola preſſus aquæ ſuperficiem KI premit, ex cujus
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              preſſione, per canaliculum neceſſariò altiùs aſſurgit : amota autem repente
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              vola, aquæ ſuperficiem AB ſecum tantulum adducit, attollítque; vnde
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              aquam per canaliculum ſubſidere neceſſe eſt. </s>
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            <p type="main">
              <s id="s.001895">
                <emph type="italics"/>
              Antim.
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              <s id="s.001896"> Inde omnium huiuſmodi experimentorum communem ratio­
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              nem reddo: ſi enim aër magis compreſſus aquam per canaliculum attol­
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              lit; certè minùs altè attollit; nullo modo preſſus non attollit; adductus
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              verò, ſecum versùs G aquam m canaliculo contentam adducit. </s>
              <s id="s.001897">Et verò,
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              vt tandem ad rem propiùs accedam, cùm hic motus, quo aqua aſſurgit,
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              non ſit ab intrinſeco, vt conſtat ex dictis, nec enim aqua ſpontè ſua aſ­
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              cendit, ab alia cauſa extrinſeca illum eſſe, neceſſe eſt; eaque profectò
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              applicata quænam porrò illa eſt, niſi aër? </s>
              <s id="s.001898">quidquid tandem aër ſit, ſive
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              purus, ſive impurus, id eſt aliis corporibus admixtus; aër porrò applica­
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              tus motum illum imprimere nequit, niſi vel gravitando, vel illo niſu, qui
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              ex compreſſione corporum ſequitur; primum dici non poteſt, cùm enim
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              gravitet per cylindros parallelos, æquè gravitat in minorem aquæ ſuper­
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              ficiem, ac in majorem ; ac proinde vtraque, ſi gravitationis dumtaxat ra­
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              tio habeatur, in eadem libella ſita eſt, nec vna aſſurgit ſupra aliam, re­
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              ſtat igitur, vt dicamus, aëra tantulum compreſſum cum niſum exerere in
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              ſuperficiem BC, non quidem per cylindros parallelos; ſed per conos,
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              quorum ſinguli vertices ſingulis ſuperficiei punctis incumbunt; ac proin­
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              de minorem niſum exeri adversùs ſuperficiem aquæ CD canaliculo con­
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              tentæ, quia ſub minoribus angulis exeritur, vt ſupra luculenter oſtenſum
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              eſt; prævalet igitur preſſio incidens in ſuperficiem BC ; ac proinde aliam
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              CD attollit versùs F. </s>
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            <p type="main">
              <s id="s.001899">
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              Chryſoc.
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              <s id="s.001900"> Iam obſervo inde germanam duci rationem, illius addu­
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              ctionis atramenti; vbi enim atramenti guttam calami roſtrum extre­
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              mum attingit, (quod pueri facere ſolebamus) attramentum illico
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              aſſurgit, & cavum calami roſtrum implet; in alio liquore idem ſuc­
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              ceſſum iri, certiſſimum eſt; calamum tamen priùs humectatum fuiſſe
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              oportet. </s>
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            <p type="main">
              <s id="s.001901">
                <emph type="italics"/>
              Auguſtin.
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              <s id="s.001902"> Luculentam rationem jam attulit Antimus; ſic enim com­
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              planatur ſuperficies calami, alioquin multis rugis & ſalebris ſtriata & aſ­
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              perata, huic autem experimento communis illa ratio Antimi facilè ap­
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              plicatur, ab inæqualis preſſionis niſu petita; nam reverà in totam guttæ
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              ſuperficiem, excepto ſcilicet puncto illo contactus, in quo extre­
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              mum roſtrum guttæ immergitur, major eſt preſſionis niſus, quàm in ca­
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              vam roſtri ſuperficiem; quid mirum ergo ſi prævaleat illa, & humor per
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              cavum roſtrum aſcendat? </s>
              <s id="s.001903">aliquid ſimile in omnibus guttis obſervo, ad-</s>
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