Agricola, Georgius, De re metallica, 1912/1950

List of thumbnails

< >
231
231 		232
232
233
233 		234
234
235
235 		236
236
237
237 		238
238
239
239 		240
240
< >
page |< < of 679 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="486"/>
              placed on the brass block, and breaks them in pieces. </s>
              <s>The head of this
                <lb/>
              hammer is a foot and two digits long, and a palm wide. </s>
              <s>Others use for this
                <lb/>
              purpose merely a block of wood channelled in the top. </s>
              <s>While the fragments
                <lb/>
              of the cake are still hot, he seizes them with the tongs and throws them into
                <lb/>
              a bowl with holes in the bottom, and pours water over them. </s>
              <s>When the
                <lb/>
              fragments are cooled, he puts them nicely into the test by placing them so
                <lb/>
              that they stand upright and project from the test to a height of two palms, and
                <lb/>
              lest one should fall against the other, he places little pieces of charcoal between
                <lb/>
              them; then he places live charcoal in the test, and soon two twig basketsful
                <lb/>
              of charcoal. </s>
              <s>Then he blows in air with the bellows. </s>
              <s>This bellows is double,
                <lb/>
              and four feet two palms long, and two feet and as many palms wide at the
                <lb/>
              back; the other parts are similar to those described in Book VII. </s>
              <s>The
                <lb/>
              nozzle of the bellows is placed in a bronze pipe a foot long, the aperture in
                <lb/>
              this pipe being a digit in diameter in front and quite round, and at the back
                <lb/>
              two palms wide. </s>
              <s>The master, because he needs for the operation of refining </s>
            </p>
            <figure number="257"/>
            <p type="caption">
              <s>A—GRATE. B—BRASS BLOCK. C—BLOCK OF WOOD. D—CAKES OF SILVER. E—HAMMER.
                <lb/>
              F—BLOCK OF WOOD CHANNELLED IN THE MIDDLE. G—BOWL FULL OF HOLES.
                <lb/>
              H—BLOCK OF WOOD FASTENED TO AN IRON IMPLEMENT. I—FIR-WOOD. K—IRON BAR.
                <lb/>
              L—IMPLEMENT WITH A HOLLOW END. THE IMPLEMENT WHICH HAS A CIRCULAR END IS
                <lb/>
              SHOWN IN THE NEXT PICTURE. M—IMPLEMENT, THE EXTREMITY OF WHICH IS BENT
                <lb/>
              UPWARDS. N—IMPLEMENT IN THE SHAPE OF TONGS.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum