Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="caption">
              <s>
                <pb pagenum="286"/>
              lower part is a palm wide and thick; then gradually the upper part becomes
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              narrower and thinner, so that at the top it is three digits and a half wide and
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              two thick. </s>
              <s>It is bored through at the place where the angles have been
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              somewhat cut away; the hole is three digits long and one wide, and is one
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              digit's distance from the top. </s>
              <s>There are some who make that part of the
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              head which is enclosed in the stem, barbed and grooved, in order that when
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              the hooks have been fixed into the stem and wedges fitted to the grooves,
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              it may remain tightly fixed, especially when it is also held with two quad­
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              rangular iron bands. </s>
              <s>Some divide the cam-shaft with a compass into six
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              sides, others into nine; it is better for it to be divided into twelve sides, in
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              order that successively one side may contain a cam and the next be without one.</s>
            </p>
            <p type="main">
              <s>The water-wheel is entirely enclosed under a quadrangular box, in case
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              either the deep snows or ice in winter, or storms, may impede its running and
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              its turning around. </s>
              <s>The joints in the planks are stopped all around with
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              moss. </s>
              <s>The cover, however, has one opening, through which there passes
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              a race bringing down water which, dropping on the buckets of the wheel,
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              turns it round, and flows out again in the lower race under the box. </s>
              <s>The
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              spokes of the water-wheel are not infrequently mortised into the middle of </s>
            </p>
            <figure number="154"/>
            <p type="caption">
              <s>A—BOX. ALTHOUGH THE UPPER PART IS NOT OPEN, IT IS SHOWN OPEN HERE, THAT THE
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              WHEEL MAY BE SEEN. B—WHEEL. C—CAM-SHAFT. D—STAMPS.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>