Agricola, Georgius, De re metallica, 1912/1950

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      <text>
        <body>
          <chap>
            <pb pagenum="559"/>
            <figure number="287"/>
            <p type="caption">
              <s>A—NILE. B—NITRUM-PITS, SUCH AS I CONJECTURE THEM TO BE.
                <emph type="sup"/>
              7
                <emph.end type="sup"/>
                <lb/>
              verted into
                <emph type="italics"/>
              nítrum.
                <emph.end type="italics"/>
              </s>
              <s> Just as the sea, in flowing of its own will over the soil
                <lb/>
              of this same Egypt, is changed into salt, so also the Nile, when it overflows
                <lb/>
              in the dog days, is converted into
                <emph type="italics"/>
              nitrum
                <emph.end type="italics"/>
              when it flows into the
                <emph type="italics"/>
              nítrum
                <emph.end type="italics"/>
              pits.
                <lb/>
              </s>
              <s>The solution from which
                <emph type="italics"/>
              nitrum
                <emph.end type="italics"/>
              is produced is obtained from fresh water
                <lb/>
              percolating through
                <emph type="italics"/>
              nitrous
                <emph.end type="italics"/>
              earth, in the same manner as lye is made from
                <lb/>
              fresh water percolating through ashes of oak or hard oak. </s>
              <s>Both solutions
                <lb/>
              are taken out of vats and poured into rectangular copper caldrons, and are
                <lb/>
              boiled until at last they condense into
                <emph type="italics"/>
              nitrum.
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
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