BOOK XI.
Different methods of parting gold from silver,
and, on the other hand, silver from gold, were dis
cussed in the last book; also the separation of copper
from the latter, and further, of lead from gold as
well as from silver; and, lastly, the methods for
refining the two precious metals. Now I will speak
of the methods by which silver must be separated
from copper, and likewise from iron.1
and, on the other hand, silver from gold, were dis
cussed in the last book; also the separation of copper
from the latter, and further, of lead from gold as
well as from silver; and, lastly, the methods for
refining the two precious metals. Now I will speak
of the methods by which silver must be separated
from copper, and likewise from iron.1
The officina, or the building
necessary for the
purposes and use of those who separate silver from copper, is constructed
in this manner. First, four long walls are built, of which the first, which
is parallel with the bank of a stream, and the second, are both two hundred and
sixty-four feet long. The second, however, stops at one hundred and fifty-one
feet, and after, as it were, a break for a length of twenty-four feet, it continues
again until it is of a length equal to the first wall. The third wall is one
hundred and twenty feet long, starting at a point opposite the sixty-seventh
foot of the other walls, and reaching to their one hundred and eighty-sixth foot.
purposes and use of those who separate silver from copper, is constructed
in this manner. First, four long walls are built, of which the first, which
is parallel with the bank of a stream, and the second, are both two hundred and
sixty-four feet long. The second, however, stops at one hundred and fifty-one
feet, and after, as it were, a break for a length of twenty-four feet, it continues
again until it is of a length equal to the first wall. The third wall is one
hundred and twenty feet long, starting at a point opposite the sixty-seventh
foot of the other walls, and reaching to their one hundred and eighty-sixth foot.
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