Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

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        <div xml:id="echoid-div400" type="section" level="1" n="153">
          <head xml:id="echoid-head182" xml:space="preserve">BREVIS INSTRUCTIO DE USU HOROLO-
            <lb/>
          GIORUM AD INVENIENDAS
            <lb/>
          LONGITUDINES.</head>
          <head xml:id="echoid-head183" xml:space="preserve">I.</head>
          <p>
            <s xml:id="echoid-s4297" xml:space="preserve">AD minimum bina nova Horologia O-
              <lb/>
            ſcillatoria in navem ferantur: </s>
            <s xml:id="echoid-s4298" xml:space="preserve">ut ſi al-
              <lb/>
            terutrum forte fortunâ vel ex negli-
              <lb/>
            gentia quieſcat; </s>
            <s xml:id="echoid-s4299" xml:space="preserve">vel ſi diuturnitate
              <lb/>
            temporis contractis ſordibus, purgan-
              <lb/>
            dum ſit, alterum nihilominus movea-
              <lb/>
            tur; </s>
            <s xml:id="echoid-s4300" xml:space="preserve">præſtaret autem 3 vel 4 adhibere
              <lb/>
            horologia.</s>
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        <div xml:id="echoid-div401" type="section" level="1" n="154">
          <head xml:id="echoid-head184" xml:space="preserve">II.</head>
          <p>
            <s xml:id="echoid-s4302" xml:space="preserve">Cui cura horologiorum committetur, diſcat a fabro quæ
              <lb/>
            ſpectant indices horarum minutarum primarum & </s>
            <s xml:id="echoid-s4303" xml:space="preserve">ſecunda-
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            rum, internas etiam horologiorum partes intelligere, & </s>
            <s xml:id="echoid-s4304" xml:space="preserve">redu-
              <lb/>
            cendi ea methodum.</s>
            <s xml:id="echoid-s4305" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div402" type="section" level="1" n="155">
          <head xml:id="echoid-head185" xml:space="preserve">III.</head>
          <p>
            <s xml:id="echoid-s4306" xml:space="preserve">Horologia in navi ſuſpendenda ſunt in loco arcte clauſo,
              <lb/>
            ubi tuta ſunt ab humore vel ſordibus, & </s>
            <s xml:id="echoid-s4307" xml:space="preserve">ne diſturbentur con-
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            tactibus: </s>
            <s xml:id="echoid-s4308" xml:space="preserve">Et ſi locum illum in media navi prope malum
              <lb/>
            principem ordinare poſſemus, multum præſtaret, quoniam
              <lb/>
            ibi motus minimus eſt.</s>
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        <div xml:id="echoid-div403" type="section" level="1" n="156">
          <head xml:id="echoid-head186" xml:space="preserve">IV.</head>
          <p>
            <s xml:id="echoid-s4310" xml:space="preserve">Antequam horologia in navem inferantur, conabimur ea
              <lb/>
            aptare ad rectam dierum menſuram, tum enim uſus eſt facil-
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            limus, nulluſque fabris labor eſt ad unum bene adaptatum
              <lb/>
            horologium alia accommodare. </s>
            <s xml:id="echoid-s4311" xml:space="preserve">Sed ſi tamen tempus vel op-
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            portuna id præſtandi occaſio defuerit, nihilominus poterunt
              <lb/>
            æque certe mari uſurpari, dummodo obſervaveris vel ſcias,
              <lb/>
            quanto citius vel tardius ſpatio 24 horarum moveantur, ut
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            poſtea docebitur.</s>
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