Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="155"/>
              by a workman out of tunnels or sheds. </s>
              <s>It is made as follows: two planks
                <lb/>
              are chosen about five feet long, one foot wide, and two digits thick; of
                <lb/>
              each of these the lower side is cut away at the front for a length of one
                <lb/>
              foot, and at the back for a length of two feet, while the middle is left whole.
                <lb/>
              </s>
              <s>Then in the front parts are bored circular holes, in order that the ends of an
                <lb/>
              axle may revolve in them. </s>
              <s>The intermediate parts of the planks are
                <lb/>
              perforated twice near the bottom, so as to receive the heads of two little
                <lb/>
              cleats on which the planks are fixed; and they are also perforated in the
                <lb/>
              middle, so as to receive the heads of two end-boards, while keys fixed in
                <lb/>
              these projecting heads strengthen the whole structure. </s>
              <s>The handles are
                <lb/>
              made out of the extreme ends of the long planks, and they turn downward
                <lb/>
              at the ends that they may be grasped more firmly in the hands. </s>
              <s>The small
                <lb/>
              wheel, of which there is only one, neither has a nave nor does it revolve
                <lb/>
              around the axle, but turns around with it. </s>
              <s>From the felloe, which the
                <lb/>
              Greeks called
                <foreign lang="grc">ἀψῑδες,</foreign>
              two transverse spokes fixed into it pass through the
                <lb/>
              middle of the axle toward the opposite felloe; the axle is square, with
                <lb/>
              the exception of the ends, each of which is rounded so as to turn in the
                <lb/>
              opening. </s>
              <s>A workman draws out this barrow full of earth and rock and draws
                <lb/>
              it back empty. </s>
              <s>Miners also have another wheelbarrow, larger than this
                <lb/>
              one, which they use when they wash earth mixed with tin-stone on to which
                <lb/>
              a stream has been turned. </s>
              <s>The front end-board of this one is deeper, in
                <lb/>
              order that the earth which has been thrown into it may not fall out.</s>
            </p>
            <figure number="82"/>
            <p type="caption">
              <s>A—SMALL WHEELBARROW. B—LONG PLANKS THEREOF. C—END-BOARDS. D—SMALL
                <lb/>
              WHEEL. E—LARGER BARROW. F—FRONT END-BOARD THEREOF.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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