Agricola, Georgius, De re metallica, 1912/1950

Table of figures

< >
[Figure 141]
[Figure 142]
[Figure 143]
[Figure 144]
[Figure 145]
[Figure 146]
[Figure 147]
[Figure 148]
[Figure 149]
[Figure 150]
[Figure 151]
[Figure 152]
[Figure 153]
[Figure 154]
[Figure 155]
[Figure 156]
[Figure 157]
[Figure 158]
[Figure 159]
[Figure 160]
[Figure 161]
[Figure 162]
[Figure 163]
[Figure 164]
[Figure 165]
[Figure 166]
[Figure 167]
[Figure 168]
[Figure 169]
[Figure 170]
< >
page |< < of 679 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="caption">
              <s>
                <pb pagenum="302"/>
              place, he removes with a shovel the mud and sand which are mixed with
                <lb/>
              minute particles of metal, and washes them on a canvas strake. </s>
              <s>Sometimes
                <lb/>
              before the buddles have been filled full, the boys throw the material into a
                <lb/>
              bowl and carry it to the strakes and wash it.</s>
            </p>
            <p type="main">
              <s>Pulverized ore is washed in the head of this kind of a buddle; but usually
                <lb/>
              when tin-stone is washed in it, interlacing fir boughs are put into the buddle, in
                <lb/>
              the same manner as in the sluice when wet ore is crushed with stamps. </s>
              <s>The
                <lb/>
              larger tin-stone particles, which sink in the upper part of the buddle,
                <lb/>
              are washed separately in a strake; those particles which are of medium
                <lb/>
              size, and settle in the middle part, are washed separately in the same way;
                <lb/>
              and the mud mixed with minute particles of tin-stone, which has settled in
                <lb/>
              the lowest part of the buddle below the fir boughs, is washed separately on
                <lb/>
              the canvas strakes.</s>
            </p>
            <p type="main">
              <s>The divided buddle differs from the last one by having several cross­
                <lb/>
              boards, which, being placed inside it, divide it off like steps; if the buddle
                <lb/>
              is twelve feet long, four of them are placed within; if nine feet long, three.
                <lb/>
              </s>
              <s>The nearer each one is to the head, the greater is its height; the further from
                <lb/>
              the head, the lower it is; and so when the highest is a foot and a palm high, </s>
            </p>
            <figure number="165"/>
            <p type="caption">
              <s>A—PIPE. B—CROSS LAUNDER. C—SMALL TROUGHS. D—HEAD OF THE BUDDLE.
                <lb/>
              E—WOODEN SCRUBBER. F—DIVIDING BOARDS. G—SHORT STRAKE.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>