Weidler, Johann Friedrich, Jo. Friderici Weidleri Tractatus de machinis hydraulicis toto terrarum orbe maximis Marlyensi et Londinensi et aliis rarioribus similibus in quo mensurae prope ipsas machinas notatae describuntur, et de viribus earum luculenter disseritur

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            <s xml:id="echoid-s1635" xml:space="preserve">
              <pb o="73" file="0083" n="83" rhead="DE MACHINA HYDRAVL. LONDINENSI."/>
            ſuſtinetur, quemadmodum in inſtitutionibus aerome-
              <lb/>
            triae §. </s>
            <s xml:id="echoid-s1636" xml:space="preserve">25. </s>
            <s xml:id="echoid-s1637" xml:space="preserve">ſq. </s>
            <s xml:id="echoid-s1638" xml:space="preserve">copioſius demonſtraui. </s>
            <s xml:id="echoid-s1639" xml:space="preserve">Aſſumemus ex
              <lb/>
            iisdem, quod ſuper ſpatio quadrato pedis rhinlandici,
              <lb/>
            qui non multo maior eſt Londinenſi, conſiſtat colu-
              <lb/>
            mna aeris, cuius pondus 1958 librarum, et quod graui-
              <lb/>
            tas pedis cubici aquae 64 libris aequipolleat. </s>
            <s xml:id="echoid-s1640" xml:space="preserve">(ſupra qui-
              <lb/>
            dem c. </s>
            <s xml:id="echoid-s1641" xml:space="preserve">1. </s>
            <s xml:id="echoid-s1642" xml:space="preserve">§. </s>
            <s xml:id="echoid-s1643" xml:space="preserve">37. </s>
            <s xml:id="echoid-s1644" xml:space="preserve">ex Mariottio pondus pedis cubici aquae
              <lb/>
            libris 70 Gallicis definiui, quod accipiendum eſt de a-
              <lb/>
            quae pede cubico Pariſienſi, quo minor exiſtit pes
              <lb/>
            R hinlandicus, hunc autem ideo aſſumere debui, quia
              <lb/>
            pondus aeris ipſi accommodatum fuit.) </s>
            <s xml:id="echoid-s1645" xml:space="preserve">Primum quae-
              <lb/>
            ratur moles columnae aereae innixae circulo cuius
              <lb/>
            diameter 2 {1/2} libr. </s>
            <s xml:id="echoid-s1646" xml:space="preserve">quadratum memoratae diametri eſt
              <lb/>
            900 pollicum quadratorum. </s>
            <s xml:id="echoid-s1647" xml:space="preserve">et per §. </s>
            <s xml:id="echoid-s1648" xml:space="preserve">158. </s>
            <s xml:id="echoid-s1649" xml:space="preserve">Inſtit. </s>
            <s xml:id="echoid-s1650" xml:space="preserve">Geo-
              <lb/>
            metr. </s>
            <s xml:id="echoid-s1651" xml:space="preserve">1000: </s>
            <s xml:id="echoid-s1652" xml:space="preserve">785 = 906: </s>
            <s xml:id="echoid-s1653" xml:space="preserve">706 poll. </s>
            <s xml:id="echoid-s1654" xml:space="preserve">quadratos circuli, quo
              <lb/>
            embolus I. </s>
            <s xml:id="echoid-s1655" xml:space="preserve">terminatur. </s>
            <s xml:id="echoid-s1656" xml:space="preserve">et porro §. </s>
            <s xml:id="echoid-s1657" xml:space="preserve">198. </s>
            <s xml:id="echoid-s1658" xml:space="preserve">Inſtit. </s>
            <s xml:id="echoid-s1659" xml:space="preserve">Geom.
              <lb/>
            </s>
            <s xml:id="echoid-s1660" xml:space="preserve">144: </s>
            <s xml:id="echoid-s1661" xml:space="preserve">706 = 1958: </s>
            <s xml:id="echoid-s1662" xml:space="preserve">9599 {23/36} libras aeris, quae embolum
              <lb/>
            premunt, et facta exhalationum condenſatione redu-
              <lb/>
            cunt. </s>
            <s xml:id="echoid-s1663" xml:space="preserve">Tantundem igitur omnes, ex oppoſita parte
              <lb/>
            emboli inuerſi attollere poſſunt. </s>
            <s xml:id="echoid-s1664" xml:space="preserve">Trudatur aqua per
              <lb/>
            duas fiſtulas diam. </s>
            <s xml:id="echoid-s1665" xml:space="preserve">10. </s>
            <s xml:id="echoid-s1666" xml:space="preserve">dig. </s>
            <s xml:id="echoid-s1667" xml:space="preserve">et altitudinis 100 pedum. </s>
            <s xml:id="echoid-s1668" xml:space="preserve">una
              <lb/>
            continet 54 {288/1728} pedes cubicos, duae ſimiles 108 {1/3} ca-
              <lb/>
            piunt. </s>
            <s xml:id="echoid-s1669" xml:space="preserve">multiplicato hoc numero per 64 1. </s>
            <s xml:id="echoid-s1670" xml:space="preserve">prodeunt
              <lb/>
            6933 librae, quibus a ſumma 9599 lib. </s>
            <s xml:id="echoid-s1671" xml:space="preserve">demtis, ſuperſunt
              <lb/>
            2666 lib. </s>
            <s xml:id="echoid-s1672" xml:space="preserve">pro attritu uincendo, qui, uti dixi ob per-
              <lb/>
            pendicularem motum @@boli, multo minor eſt, quam
              <lb/>
            ſi embolus traheretur obliquius. </s>
            <s xml:id="echoid-s1673" xml:space="preserve">Huic ponderi prae-
              <lb/>
            terea accedit uelocitas, quae impetum efficit, et moli
              <lb/>
            prementi nouam uim conciliat.</s>
            <s xml:id="echoid-s1674" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1675" xml:space="preserve">9. </s>
            <s xml:id="echoid-s1676" xml:space="preserve">Multitudo aquarum in altum propulſarum ex
              <lb/>
            iisdem praemiſſis intelligitur. </s>
            <s xml:id="echoid-s1677" xml:space="preserve">Si enim, in duabus lau-
              <lb/>
            datae diametri fiſtulis, motus contingat in perpendi-
              <lb/>
            culo 7 pedum, et repetatur decies intra minutum </s>
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