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

Table of figures

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              ret menſuram præciſam grauitatis fluidi, propterea
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              quòd magis aut minùs, quàm opus eſt, deprimit
                <expan abbr="collũ">collum</expan>
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              prædictæ fiſtulæ, & ſic menſuram alteratam, & falla­
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              cem deſignat, quæ tandem cùm in aqua vnum, vel al­
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              terum granum excedere queat, in mercurio verò mul­
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              tò magis, non poſſunt abſque erroris ſuſpicione vſur­
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              pari cum agitur de examine ponderum exiguorum. </s>
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              Cap. 9. de
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              corpuſculo­
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              rum
                <expan abbr="innatã-tium">innatan­
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                tium</expan>
              mutuo
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              amplexu at­
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              que fuga.</s>
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              <s id="s.002127">Ex dictis colligitur quod fiſtula vitrea libellatoria
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              (quam hydroſtaticam libellam nonnulli
                <expan abbr="vocãt">vocant</expan>
              ) non­
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              nullis difficultatibus ac fallacijs obnoxia ſit. </s>
              <s id="s.002128">primò
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              quia ſi fiſtulæ vitreæ erectæ perpendicularitèr ad pla­
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              num horizontis non fuerint præcisè æquè amplæ,
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              procùl dubio argines aqueos internos inæquales effi­
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              cient, ideoque planum per ſummitates
                <expan abbr="arginũ">arginum</expan>
              aque­
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              orum extenſum non erit horizonti æquidiſtans, idip­
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              ſum continget ſi prædictæ duæ fiſtulæ erectæ fuerint
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              æquales inter ſe, at non ſint omninò ſordibus vnctuo­
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              ſis purgatæ, & terſæ, cùm pinguedo illa prohibeat ar­
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              ginis aquei eleuationem magis, aut minùs pro copią
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              aut defectu prædictæ pinguedinis. </s>
              <s id="s.002129">præterea ſi vna fi­
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              ſtularum fuerit internè arida, reliqua verò madefacta,
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              argines quoque aquei in madida fiſtula eleuantur,
                <expan abbr="nõ">non</expan>
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              verò in arida. </s>
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              <s id="s.002130">Alio inſuper nomine fallax eſt prædictum inſtru­
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              mentum, cùm enim aqua numquam pura, & ſincerą
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              haberi poſſit, fit vt niſi bullulæ aereæ quibus num­
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              quam aqua ſpoliatur, æquè diſtributæ ſint in vtraque
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              fiſtula, erunt moleculæ illæ aqueæ inæ qualitèr gra­
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              ues ſpecie, & ideò earum ſummitates habebunt inæ-</s>
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