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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        <div xml:id="echoid-div124" type="section" level="1" n="91">
          <pb o="63" file="0179" n="184" rhead="GEOMETRIA SVBTERRANEA."/>
        </div>
        <div xml:id="echoid-div127" type="section" level="1" n="92">
          <head xml:id="echoid-head111" xml:space="preserve">DEFINITIO XIX.</head>
          <p>
            <s xml:id="echoid-s3071" xml:space="preserve">67. </s>
            <s xml:id="echoid-s3072" xml:space="preserve">Menſio ſubdialis (der Tage - Zug) uocatur praxis, qua
              <lb/>
            linearum ſupra terram, ſiue in ſuperficie terrae ex-
              <lb/>
            tenſarum, ſitus, tum qua inclinationem ad horizontem,
              <lb/>
            tum qua conuerſionem ad plagas mundi, inueſtigatur et
              <lb/>
            definitur.</s>
            <s xml:id="echoid-s3073" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div128" type="section" level="1" n="93">
          <head xml:id="echoid-head112" xml:space="preserve">CONSECTARIVM.</head>
          <p>
            <s xml:id="echoid-s3074" xml:space="preserve">68. </s>
            <s xml:id="echoid-s3075" xml:space="preserve">Itaque in hac quoque dimenſione libella, et compaſſus
              <lb/>
            officium ſuum facient, ſi ex goniodicte baculo impoſito,
              <lb/>
            ſuſpendantur.</s>
            <s xml:id="echoid-s3076" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div129" type="section" level="1" n="94">
          <head xml:id="echoid-head113" xml:space="preserve">PROBLEMA VII.</head>
          <p>
            <s xml:id="echoid-s3077" xml:space="preserve">69. </s>
            <s xml:id="echoid-s3078" xml:space="preserve">Menſionem ſubdialem inſtituere.</s>
            <s xml:id="echoid-s3079" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3080" xml:space="preserve">Reſolutio. </s>
            <s xml:id="echoid-s3081" xml:space="preserve">1. </s>
            <s xml:id="echoid-s3082" xml:space="preserve">Eligatur tempus, quo aer tranquil-
              <lb/>
            lus eſt, ut in libella perpendiculum, et in compaſſo acus,
              <lb/>
            accurate optatas circulorum partes deſignent. </s>
            <s xml:id="echoid-s3083" xml:space="preserve">Tale autem
              <lb/>
            tempus plerumque matutinum exiſtit.</s>
            <s xml:id="echoid-s3084" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3085" xml:space="preserve">2. </s>
            <s xml:id="echoid-s3086" xml:space="preserve">Praeparetur in pugillaribus tabula, pro numeris
              <lb/>
            inſcribendis, qualis ſupra §. </s>
            <s xml:id="echoid-s3087" xml:space="preserve">52. </s>
            <s xml:id="echoid-s3088" xml:space="preserve">n. </s>
            <s xml:id="echoid-s3089" xml:space="preserve">3. </s>
            <s xml:id="echoid-s3090" xml:space="preserve">praeſcripta eſt.</s>
            <s xml:id="echoid-s3091" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3092" xml:space="preserve">3. </s>
            <s xml:id="echoid-s3093" xml:space="preserve">funiculus aſſumatur 6 uel 10 ulnarum, uel ſaltem
              <lb/>
            non multo maior, alias enim pondere ſuo, poſtquam extre-
              <lb/>
            mis in baculis annexus eſt, nimium trahitur, et curuatur.
              <lb/>
            </s>
            <s xml:id="echoid-s3094" xml:space="preserve">Quin mihi uidetur quoque conſultum, praeter funem ca-
              <lb/>
            tenam adhibere, et eadem longitudinem funiculi, metiri,
              <lb/>
            ſi forte eius contractionem, quae in ſolo, pruinis aut rore
              <lb/>
            madido, cito contingere ſolet, ſufpicari poſſis. </s>
            <s xml:id="echoid-s3095" xml:space="preserve">Debet au-
              <lb/>
            tem funis in extremis annulos habere, in quos baculorum
              <lb/>
            ſumma immittantur.</s>
            <s xml:id="echoid-s3096" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3097" xml:space="preserve">4. </s>
            <s xml:id="echoid-s3098" xml:space="preserve">alligetur in principio lineae, v.</s>
            <s xml:id="echoid-s3099" xml:space="preserve">g. </s>
            <s xml:id="echoid-s3100" xml:space="preserve">in ſummo putei
              <lb/>
            funiculus, tum recta procedatur eo, quo linea menſuranda
              <lb/>
            porrigitur, et quando funis eſt 6 ulnarum, tanto interuallo </s>
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