Agricola, Georgius, De re metallica, 1912/1950

Table of figures

< >
[Figure 161]
Page: 332
[Figure 162]
Page: 334
[Figure 163]
Page: 337
[Figure 164]
Page: 339
[Figure 165]
Page: 340
[Figure 166]
Page: 341
[Figure 167]
Page: 343
[Figure 168]
Page: 344
[Figure 169]
Page: 345
[Figure 170]
Page: 346
[Figure 171]
Page: 347
[Figure 172]
Page: 349
[Figure 173]
Page: 351
[Figure 174]
Page: 352
[Figure 175]
Page: 353
[Figure 176]
Page: 355
[Figure 177]
Page: 356
[Figure 178]
Page: 358
[Figure 179]
Page: 359
[Figure 180]
Page: 360
[Figure 181]
Page: 361
[Figure 182]
Page: 362
[Figure 183]
Page: 364
[Figure 184]
Page: 365
[Figure 185]
Page: 366
[Figure 186]
Page: 367
[Figure 187]
Page: 368
[Figure 188]
Page: 369
[Figure 189]
Page: 370
[Figure 190]
Page: 371
< >
page |< < of 679 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="caption">
              <s>
                <pb pagenum="338"/>
              time first of all dig a long ditch sloping so that the water will run through
                <lb/>
              it rapidly. </s>
              <s>Into the ditch is thrown the metallic material, together with the
                <lb/>
              surface material, which is six feet thick, more or less, and often contains moss,
                <lb/>
              roots of plants, shrubs, trees, and earth; they are all thrown in with a broad
                <lb/>
              mattock, and the water flows through the ditch. </s>
              <s>The sand and tin-stone, as
                <lb/>
              they are heavy, sink to the bottom of the ditch, while the moss and roots, as
                <lb/>
              they are light, are carried away by the water which flows through the ditch.
                <lb/>
              </s>
              <s>The bottom of the ditch is obstructed with turf and stones in order to prevent
                <lb/>
              the water from carrying away the tin-stone at the same time. </s>
              <s>The washers,
                <lb/>
              whose feet are covered with high boots made of hide, though not of rawhide,
                <lb/>
              themselves stand in the ditch and throw out of it the roots of the trees,
                <lb/>
              shrubs, and grass with seven-pronged wooden forks, and push back the tin­
                <lb/>
              stone toward the head of the ditch. </s>
              <s>After four weeks, in which they have
                <lb/>
              devoted much work and labour, they raise the tin-stone in the following
                <lb/>
              way; the sand with which it is mixed is repeatedly lifted from the ditch </s>
            </p>
            <figure number="195"/>
            <p type="caption">
              <s>A—TROUGH. B—WOODEN SHOVEL. C—TUB. D—LAUNDER. E—WOODEN TROWEL.
                <lb/>
              F—TRANSVERSE TROUGH. G—PLUG. H—FALLING WATER. I—DITCH. K—BARROW
                <lb/>
              CONVEYING MATERIAL TO BE WASHED. L—PICK LIKE THE BEAK OF A DUCK WITH WHICH
                <lb/>
              THE MINER DIGS OUT THE MATERIAL FROM WHICH THE SMALL STONES ARE OBTAINED.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum