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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          <pb o="26" file="0036" n="36" rhead="CAPVT I."/>
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            <s xml:id="echoid-s557" xml:space="preserve">33. </s>
            <s xml:id="echoid-s558" xml:space="preserve">Difficillimum in tota hac contemplatione ca-
              <lb/>
            put eſt, quod ad tantae totque ex partibus conſtructae
              <lb/>
            machinae uires aeſtimandas ſpectat. </s>
            <s xml:id="echoid-s559" xml:space="preserve">Etſi enim ea uiui-
              <lb/>
            mus aetate, qua diligentia praeſtantiſſimorum ingenio-
              <lb/>
            rum, doctrina de corporum motionibus egregie elabo-
              <lb/>
            rata, multisque ueritatibus inſtructa eſt, quo nomine
              <lb/>
            prae ceteris laudem conſecuti ſunt Galileus, Toricel-
              <lb/>
            lius, Newtonus, Leibnitius, Bernoullii, Varignoni-
              <lb/>
            us, Hermannus, Graueſandius; </s>
            <s xml:id="echoid-s560" xml:space="preserve">neque defuerunt,
              <lb/>
            qui ſpeciatim fluminum curſus atque impetus perueſti-
              <lb/>
            garunt, et experientiam quoque ſtudioſe conſuluerunt,
              <lb/>
            quod Mariottium et Guilielminum feciſſe conſtat, ta-
              <lb/>
            men non diffitentur ipſi ſcrutatores reconditorum
              <lb/>
            eiusmodi naturae effectuum, uires quaeſitas plerum-
              <lb/>
            que magis ueriſimiliter innoteſcere, quam claris ex
              <lb/>
            principiis demonſtrari poſſe. </s>
            <s xml:id="echoid-s561" xml:space="preserve">Non uacat in praeſenti
              <lb/>
            latius excutere hoc argumentum, quamobrem ſufficiet
              <lb/>
            nobis, ſi euincere poſſimus, in magna illa, de qua lo-
              <lb/>
            quimur, machina, ſuperandis oneribus idoneam quo-
              <lb/>
            que et ſatis potentem reſpondere uirtutem.</s>
            <s xml:id="echoid-s562" xml:space="preserve"/>
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            <s xml:id="echoid-s563" xml:space="preserve">34. </s>
            <s xml:id="echoid-s564" xml:space="preserve">Ordo poſtulat, ut primum de mouendis ponde-
              <lb/>
            ribus ſoliciti ſimus. </s>
            <s xml:id="echoid-s565" xml:space="preserve">ſit exempli loco rota, quae altero
              <lb/>
            manubrio octo antlias prementes et unam aſpirantem
              <lb/>
            mouet, altero catenam trahit. </s>
            <s xml:id="echoid-s566" xml:space="preserve">Patuit ſupra, cylindros
              <lb/>
            aquae 64, diametri 6 digit. </s>
            <s xml:id="echoid-s567" xml:space="preserve">altos 4 pedes, pendere 3520
              <lb/>
            libras, ex quo ſequitur, quod octo aequipolleant 440
              <lb/>
            libris, additis 55 libris, quantum nempe una columna
              <lb/>
            grauitat, pro aſpirante, fient 495 librae. </s>
            <s xml:id="echoid-s568" xml:space="preserve">Non autem
              <lb/>
            ſolum hae aquae attolluntur, ſed propelluntur etiam a
              <lb/>
            fingulis 4 prementibus embolis, et per fiſtulas ad ca-
              <lb/>
            ſtellum medium aſſurgunt, et harum columnarum al-
              <lb/>
            titudo perpendicularis eſt 150 pedum. </s>
            <s xml:id="echoid-s569" xml:space="preserve">ſi diameter eadem
              <lb/>
            cum diametris antliarum, 6 digitorum, ponatur, </s>
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