Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="129"/>
              mass of the mountains in order that the owners may lay out their plans, and
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              that their workmen may not encroach on other people's possessions. </s>
              <s>The
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              surveyor either measures the interval not yet wholly dug through, which
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              lies between the mouth of a tunnel and a shaft to be sunk to that depth, or
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              between the mouth of a shaft and the tunnel to be driven to that spot which
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              lies under the shaft, or between both, if the tunnel is neither so long as to
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              reach to the shaft, nor the shaft so deep as to reach to the tunnel; and thus
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              on both sides work is still to be done. </s>
              <s>Or in some cases, within the tunnels
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              and drifts, are to be fixed the boundaries of the meers, just as the
                <emph type="italics"/>
              Bergmeister
                <emph.end type="italics"/>
                <lb/>
              has determined the boundaries of the same meers above ground.
                <emph type="sup"/>
              16
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              </s>
            </p>
            <p type="main">
              <s>Each method of surveying depends on the measuring of triangles. </s>
              <s>A
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              small triangle should be laid out, and from it calculations must be made
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              regarding a larger one. </s>
              <s>Most particular care must be taken that we do not
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              deviate at all from a correct measuring; for if, at the beginning, we are drawn </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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