Agricola, Georgius, De re metallica, 1912/1950

Table of figures

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="490"/>
              muffle has small windows at the sides, and in front a little bridge. </s>
              <s>In order
                <lb/>
              to melt the silver, at the sides of the muffle are laid bricks, upon which the
                <lb/>
              charcoal is placed, and burning firebrands are put on the bridge. </s>
              <s>The
                <lb/>
              furnace has an iron door, which is covered on the side next to the fire with lute
                <lb/>
              in order that it may not be injured. </s>
              <s>When the door is closed it retains the
                <lb/>
              heat of the fire, but it has a small window, so that the artificers may look
                <lb/>
              into the test and may at times stimulate the fire with the bellows. </s>
              <s>Although
                <lb/>
              by this method silver is refined more slowly than by the other, nevertheless it is
                <lb/>
              more useful, because less loss is caused, for a gentle fire consumes fewer particles
                <lb/>
              than a fierce fire continually excited by the blast of the bellows. </s>
              <s>If, on
                <lb/>
              account of its great size, the cake of silver can be carried only with difficulty
                <lb/>
              when it is taken out of the muffle, they cut it up into two or three
                <lb/>
              pieces while it is still hot, with a wedge or a hammer-chisel; for if they cut
                <lb/>
              it up after it has cooled, little pieces of it frequently fly off and are lost.</s>
            </p>
            <p type="head">
              <s>END OF BOOK X.</s>
            </p>
            <figure number="260"/>
          </chap>
        </body>
      </text>
    </archimedes>
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