Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb pagenum="65"/>
            <p type="main">
              <s>In the next place,
                <emph type="italics"/>
              venae profundae
                <emph.end type="italics"/>
              differ not a little in the manner in
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              which they intersect, since one may cross through a second transversely, or
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              one may cross another one obliquely as if cutting it in two.</s>
            </p>
            <p type="main">
              <s>If a vein which cuts through another principal one obliquely be the
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              harder of the two, it penetrates right through it, just as a wedge of beech or
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              iron can be driven through soft wood by means of a tool. </s>
              <s>If it be softer, the
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              principal vein either drags the soft one with it for a distance of three feet, or
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              perhaps one, two, three, or several fathoms, or else throws it forward along
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              the principal vein; but this latter happens very rarely. </s>
              <s>But that the vein
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              which cuts the principal one is the same vein on both sides, is shown by its
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              having the same character in its foot walls and hanging walls.</s>
            </p>
            <figure number="30"/>
            <p type="caption">
              <s>A—PRINCIPAL VEIN. B—VEIN WHICH CUTS A OBLIQUELY. C—PART CARRIED AWAY.
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              D—THAT PART WHICH HAS BEEN CARRIED FORWARD.</s>
            </p>
            <p type="main">
              <s>Sometimes
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              venae profundae
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              join one with another, and from two or
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              more outcropping veins
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              4
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              , one is formed; or from two which do not outcrop
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              one is made, if they are not far distant from each other, and the one dips
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              into the other, or if each dips toward the other, and they thus join when they
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              have descended in depth. </s>
              <s>In exactly the same way, out of three or more
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              veins, one may be formed in depth.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>