. De re metallica. Metallurgy; Mineral industries. BOOK IX. 437 these holes wedge-shaped pegs are driven, in order that the beams may remain fixed, and that the box may turn round, and may be turned toward the wind from wliichever quarter of the sky it ma}' blow. In such a hearth they put. A—Box. B—Pivot. C—Transverse wood beams. D—Grate. E—Its feet. F—Burning wood. G—Stick. H—Pans in which the bismuth is melted. I—Pans for moulds. K—Cakes. L—Fork. M—Brush. an iron grate, as long and wide as the box and threequarters of a foot high ; it has six feet, and there are so many transverse bars that
. De re metallica. Metallurgy; Mineral industries. BOOK IX. 437 these holes wedge-shaped pegs are driven, in order that the beams may remain fixed, and that the box may turn round, and may be turned toward the wind from wliichever quarter of the sky it ma}' blow. In such a hearth they put. A—Box. B—Pivot. C—Transverse wood beams. D—Grate. E—Its feet. F—Burning wood. G—Stick. H—Pans in which the bismuth is melted. I—Pans for moulds. K—Cakes. L—Fork. M—Brush. an iron grate, as long and wide as the box and threequarters of a foot high ; it has six feet, and there are so many transverse bars that they almost touch one another. On the grate they lay pine-wood and over it broken ore, and over this they again lay pine-wood. When it has been kindled the ore melts, out of which the bismuth drips down ; since very little wood is burned, this is the most profitable method of smelting the bismuth. The bismuth drips through the grate on to the hearth, while the other things remain upon the grate with the charcoal. When the work is finished, the workman takes a stick from the hearth and overturns the grate, and the things which have accumulated on it ; with a brush he sweeps up the bismuth and collects it in a basket, and then he melts it in an iron pan and makes cakes. As soon as possible after it is cool, he turns the pans over, so that the cakes may fall out, using for this purpose a two-pronged fork of which one prong is again forked. And immediately afterward he returns to his labours. END OF BOOK Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agricola, Georg, 1494-1555; Hoover, Herbert, 1874-1964. New York, Dover Publications
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