1and then they dig out with pointed picks the holes in
the cakes, which contain
the same kind of copper. The head of the round hammer is three palms and
a digit long; one end of the head is round and two digits long and thick;
the other end is chisel-shaped, and is two digits and a half long. The sharp
pointed hammer is the same length as the round hammer, but one end is
pointed, the other end is square, and gradually tapers to a point.
the same kind of copper. The head of the round hammer is three palms and
a digit long; one end of the head is round and two digits long and thick;
the other end is chisel-shaped, and is two digits and a half long. The sharp
pointed hammer is the same length as the round hammer, but one end is
pointed, the other end is square, and gradually tapers to a point.
A—TANK. B—BOARD. C—TONGS. D—“DRIED” CAKES
TAKEN OUT OF THE TANKS.
E—BLOCK. F—ROUNDED HAMMER. G—POINTED HAMMER.
E—BLOCK. F—ROUNDED HAMMER. G—POINTED HAMMER.
The nature of copper is such that when it is “dried” it becomes
ash
coloured, and since this copper contains silver, it is smelted again in the
blast furnaces.23
coloured, and since this copper contains silver, it is smelted again in the
blast furnaces.23
I have described sufficiently the method by which exhausted liquation
cakes are “dried”; now I will speak of the method by which they are made
into copper after they have been “dried.” These cakes, in order that
they may recover the appearance of copper which they have to some extent
lost, are melted in four furnaces, which are placed against the second long
wall in the part of the building between the second and third transverse
walls. This space is sixty-three feet and two palms long, and since each of
cakes are “dried”; now I will speak of the method by which they are made
into copper after they have been “dried.” These cakes, in order that
they may recover the appearance of copper which they have to some extent
lost, are melted in four furnaces, which are placed against the second long
wall in the part of the building between the second and third transverse
walls. This space is sixty-three feet and two palms long, and since each of