Agricola, Georgius, De re metallica, 1912/1950

Table of figures

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              <s>
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              it is twenty feet long, and starts from the fourth long wall. </s>
              <s>The sixth
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              transverse wall is built also from the fourth long wall, at a point distant
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              thirty feet from the fourth transverse wall, and it extends as far as the back
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              of the third long wall. </s>
              <s>The seventh transverse wall is constructed from
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              the second long wall, where this first leaves off, to the third long wall; and
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              from the back of the third long wall the eighth transverse wall is built,
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              extending to the end of the fourth long wall. </s>
              <s>Then the fifth long wall is built
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              from the seventh transverse wall, starting at a point nineteen feet from the
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              second long wall; it is one hundred and nine feet in length; and at a point
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              twenty-four feet along it, the ninth transverse wall is carried to the third end
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              of the second long wall, where that begins again. </s>
              <s>The tenth transverse wall is
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              built from the end of the fifth long wall, and leads to the further end of the
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              second long wall; and from there the eleventh transverse wall leads to the
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              further end of the first long wall. </s>
              <s>Behind the fifth long wall, and five feet
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              toward the third long wall, the sixth long wall is built, leading from the
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              seventh transverse wall; its length is thirty-five feet, and from its further
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              end the twelfth transverse wall is built to the third long wall, and from it the
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              thirteenth transverse wall is built to the fifth long wall. </s>
              <s>The fourteenth
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              transverse wall divides into equal parts the space which lies between the
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              seventh transverse wall and the twelfth.</s>
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            <p type="main">
              <s>The length, height, breadth, and position of the walls are as above.
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              </s>
              <s>Their archways, doors, and openings are made at the same time that the walls
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              are built. </s>
              <s>The size of these and the way they are made will be much better
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              understood hereafter. </s>
              <s>I will now speak of the furnace hoods and of the roofs.
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              </s>
              <s>The first side
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              2
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              of the hood stands on the second long wall, and is similar in
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              every respect to those whose structure I explained in Book IX, when I
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              described the works in whose furnaces are smelted the ores of gold, silver,
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              and copper. </s>
              <s>From this side of the hood a roof, which consists of burnt tiles,
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              extends to the first long wall; and this part of the building contains the
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              bellows, the machinery for compressing them, and the instruments for
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              inflating them. </s>
              <s>In the middle space, which is situated between the second
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              and third transverse walls, an upright post eight feet high and two feet thick </s>
            </p>
          </chap>
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