Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="caption">
              <s>
                <pb pagenum="271"/>
              lumps of ore, rich in gold or silver, are put by the sorters on the stone and
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              broken up with a broad, but not thick, hammer; they either break them into
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              pieces and throw them into one vessel, or they break and sort—whence they
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              get their name—the more precious from the worthless, throwing and collecting
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              them separately into different vessels. </s>
              <s>Other men crush the lumps of ore
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              less rich in gold or silver, which have likewise been put on the stone, with a
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              broad thick hammer, and when it has been well crushed, they collect it and
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              throw it into one vessel. </s>
              <s>There are two kinds of vessels; one is deeper, and a
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              little wider in the centre than at the top or bottom; the other is not so deep
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              though it is broader at the bottom, and becomes gradually a little narrower
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              toward the top. </s>
              <s>The latter vessel is covered with a lid, while the former is not
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              covered; an iron rod through the handles, bent over on either end, is
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              grasped in the hand when the vessel is carried. </s>
              <s>But, above all, it behooves
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              the sorters to be assiduous in their labours.</s>
            </p>
            <p type="main">
              <s>By another method of breaking ore with hammers, large hard frag­
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              ments of ore are broken before they are burned. </s>
              <s>The legs of the workmen
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              —at all events of those who crush pyrites in this manner with large hammers
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              in Goslar—are protected with coverings resembling leggings, and their hands </s>
            </p>
            <figure number="145"/>
            <p type="caption">
              <s>A—PYRITES. B—LEGGINGS. C—GLOVES. D—HAMMER.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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