Agricola, Georgius, De re metallica, 1912/1950

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      <text>
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            <p type="main">
              <s>
                <pb pagenum="74"/>
              best are those which, on the contrary, extend from the VI or VII direction
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              of the west to the VI or VII direction of the east, through the slope of a
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              mountain which similarly inclines to the north. </s>
              <s>whose hangingwalls
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              are also in the south, whose footwalls are in the north, and whose
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              heads rise toward the north; and lastly, whose rock seams raise
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              their heads toward the west. </s>
              <s>In the third place, they recommend those
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              veins which extend from XII north to XII south, through the slope
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              of a mountain which faces east; whose hangingwalls are in the
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              west, whose footwalls are in the east; whose heads rise toward
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              the east; and whose rock seams raise their heads toward the north.
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              </s>
              <s>Therefore they devote all their energies to those veins, and give very little
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              or nothing to those whose heads, or the heads of whose rock seams rise
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              toward the south or west. </s>
              <s>For although they say these veins some­
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              times show bright specks of pure metal adhering to the stones, or they come
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              upon lumps of metal, yet these are so few and far between that despite them
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              it is not worth the trouble to excavate such veins; and miners who persevere
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              in digging in the hope of coming upon a quantity of metal, always lose their
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              time and trouble. </s>
              <s>And they say that from veins of this kind, since the sun's
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              rays draw out the metallic material, very little metal is gained. </s>
              <s>But in
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              this matter the actual experience of the miners who thus judge of the veins
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              does not always agree with their opinions, nor is their reasoning sound;
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              since indeed the veins which run from east to west through the slope of a
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              mountain which inclines to the south, whose heads rise likewise to the
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              south, are not less charged with metals, than those to which miners are
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              wont to accord the first place in productiveness; as in recent years has been
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              proved by the St. </s>
              <s>Lorentz vein at Abertham, which our countrymen call
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              Gottsgaab, for they have dug out of it a large quantity of pure silver; and
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              lately a vein in Annaberg, called by the name of Himmelsch hoz
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              9
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              , has made it </s>
            </p>
          </chap>
        </body>
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