Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb pagenum="292"/>
            <p type="main">
              <s>If the ore is rich in metal, the earth, the fine and coarse sand, and the
                <lb/>
              pieces of rock which have been broken from the hanging-wall, are dug out of
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              the dump with a spade or rake and, with a shovel, are thrown into a large sieve
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              or basket, and washed in a tub nearly full of water. </s>
              <s>The sieve is generally
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              a cubit broad and half a foot deep; its bottom has holes of such size that the
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              larger pieces of broken rock cannot pass through them, for this material rests
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              upon the straight and cross iron wires, which at their points of contact are
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              bound by small iron clips. </s>
              <s>The sieve is held together by an iron band and by
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              two cross-rods likewise of iron; the rest of the sieve is made of staves in the
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              shape of a little tub, and is bound with two iron hoops; some, however,
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              bind it with hoops of hazel or oak, but in that case they use three of them.
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              </s>
              <s>On each side it has handles, which are held in the hands by whoever washes
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              the metalliferous material. </s>
              <s>Into this sieve a boy throws the material to be
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              washed, and a woman shakes it up and down, turning it alternately to the </s>
            </p>
            <figure number="159"/>
            <p type="caption">
              <s>A—SIEVE. B—ITS HANDLES. C—TUB. D—BOTTOM OF SIEVE MADE OF IRON WIRES.
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              E—HOOP. F—RODS. G—HOOPS. H—WOMAN SHAKING THE SIEVE. I—BOY SUPPLYING
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              IT WITH MATERIAL WHICH REQUIRES WASHING. K—MAN WITH SHOVEL REMOVING FROM
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              THE TUB THE MATERIAL WHICH HAS PASSED THROUGH THE SIEVE.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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