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="52" file="0168" n="173" rhead="GEOMETRIA SVBTERRANEA."/>
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            <lb/>
          # 1. Loca uel plagae inundi.
            <lb/>
          # 2. Fod. ſurgent. l. cadent.
            <lb/>
          # 3. Gradus et partes libellae.
            <lb/>
          # 4. Ulnae et octau. funiculi
            <lb/>
          # 5. Digiti
            <lb/>
          # 6. Horae Compa@li
            <lb/>
          # 7. Octauae p. horae.
            <lb/>
          # 8. Signa.</note>
          <p>
            <s xml:id="echoid-s2813" xml:space="preserve">4. </s>
            <s xml:id="echoid-s2814" xml:space="preserve">Quando uero acceſſus ad ſubterraneos ſpecus obli-
              <lb/>
            quus eſt, tunc ſecundum eius, uel parietis, ductum funi-
              <lb/>
            culus dirigatur, ita tamen, ut nullibi latus parietis ſtringat,
              <lb/>
            ſed libere iuxta eundem extendatnr, et cochleis utrimque
              <lb/>
            alligetur, hinc in medio funiculi libella ſuſpendatur, eaque,
              <lb/>
            niſi uncorum ſuorum elaterio fixa haereat, ligneis paxil-
              <lb/>
            lis firmetur, ne in decliui funiculo prouoluatur, et ob-
              <lb/>
            ſeruetur obliquus angulus, (§. </s>
            <s xml:id="echoid-s2815" xml:space="preserve">45.) </s>
            <s xml:id="echoid-s2816" xml:space="preserve">quem perpendiculum
              <lb/>
            libellae in ſemicirculo definit, hunc angulum, una cum
              <lb/>
            funis longitudine, et conditione ſpecus ſurgentis uel ca-
              <lb/>
            dentis, (§. </s>
            <s xml:id="echoid-s2817" xml:space="preserve">8.) </s>
            <s xml:id="echoid-s2818" xml:space="preserve">in pugillares, ſpeciatim in claſles 2. </s>
            <s xml:id="echoid-s2819" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2820" xml:space="preserve">4. </s>
            <s xml:id="echoid-s2821" xml:space="preserve">5.
              <lb/>
            </s>
            <s xml:id="echoid-s2822" xml:space="preserve">refer. </s>
            <s xml:id="echoid-s2823" xml:space="preserve">alii in puteis obliquis libellam e funiculi duobus ex-
              <lb/>
            tremis atque adeo bis ſuſpendunt, ut eo accuratius angu-
              <lb/>
            lum reperiant, uerum, ſi bene tenſus eſt funiculus, et nul-
              <lb/>
            libi, uti decet, parietem cauernae ſtringit, ſemel ſuſpenſa
              <lb/>
            libra angulum deſideratum rite manifeſtat.</s>
            <s xml:id="echoid-s2824" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2825" xml:space="preserve">5. </s>
            <s xml:id="echoid-s2826" xml:space="preserve">Tollatur a funiculo libra, et ex eodem ſuſpenda-
              <lb/>
            tur compaſſus, ſemper prorſum (h. </s>
            <s xml:id="echoid-s2827" xml:space="preserve">e. </s>
            <s xml:id="echoid-s2828" xml:space="preserve">in eam regionem,
              <lb/>
            in quam es progreſſurus) conuerſo puncto ſeptentrionis.
              <lb/>
            </s>
            <s xml:id="echoid-s2829" xml:space="preserve">(§. </s>
            <s xml:id="echoid-s2830" xml:space="preserve">28.) </s>
            <s xml:id="echoid-s2831" xml:space="preserve">nimirum collocata intra ſuſpenſum annulum ſitu ho-
              <lb/>
            rizontali pyxide, obſerua horam et horae partem </s>
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