1cling to the coverings.
Pockets are made in various ways, either with iron
wire or small cross-boards fixed to the frame, or by holes which are sunk
into the sluice itself or into its head, but which do not quite go through.
These holes are round or square, or are grooves running crosswise. The
frames are either covered with skins, pieces of cloth, or turf, which I will
deal with one by one in turn.
wire or small cross-boards fixed to the frame, or by holes which are sunk
into the sluice itself or into its head, but which do not quite go through.
These holes are round or square, or are grooves running crosswise. The
frames are either covered with skins, pieces of cloth, or turf, which I will
deal with one by one in turn.
In order to prevent the sand which contains the particles of gold from
spilling out, the washer fixes side-boards to the edges of a plank which is six
feet long and one and a quarter wide. He then lays crosswise many iron
wires a digit apart, and where they join he fixes them to the bottom plank
with iron nails. Then he makes the head of the frame higher, and into this
he throws the sand which needs washing, and taking in his hands the handles
which are at the head of the frame, he draws it backward and forward
several times in the river or stream. In this way the small stones and gravel
flow down along the frame, and the sand mixed with particles of gold remains
in the pockets between the strips. When the contents of the pockets have
been shaken out and collected in one place, he washes them in a bowl and
thus cleans the gold dust.
spilling out, the washer fixes side-boards to the edges of a plank which is six
feet long and one and a quarter wide. He then lays crosswise many iron
wires a digit apart, and where they join he fixes them to the bottom plank
with iron nails. Then he makes the head of the frame higher, and into this
he throws the sand which needs washing, and taking in his hands the handles
which are at the head of the frame, he draws it backward and forward
several times in the river or stream. In this way the small stones and gravel
flow down along the frame, and the sand mixed with particles of gold remains
in the pockets between the strips. When the contents of the pockets have
been shaken out and collected in one place, he washes them in a bowl and
thus cleans the gold dust.
Other people, among whom are the Lusitanians16, fix to the sides of a
sluice, which is about six feet long and a foot and a half broad, many crossÂ
strips or riffles, which project backward and are a digit apart. The washer
or his wife lets the water into the head of the sluice, where he throws the sand
which contains the particles of gold. As it flows down he agitates it with a
wooden scrubber, which he moves transversely to the riffles. He constantly
removes with a pointed wooden stick the sediment which settles in the pockets
between the riffles, and in this way the particles of gold settle in them,
while the sand and other valueless materials are carried by the water into a
tub placed below the sluice. He removes the particles of metal with a small
wooden shovel into a wooden bowl. This bowl does not exceed a foot and a
quarter in breadth, and by moving it up and down in the stream he cleanses
the gold dust, for the remaining sand flows out of the dish, and the gold dust
settles in the middle of it, where there is a cup-like depression. Some make
use of a bowl which is grooved inside like a shell, but with a smooth lip where
the water flows out. This smooth place, however, is narrower where the
grooves run into it, and broader where the water flows out.
sluice, which is about six feet long and a foot and a half broad, many crossÂ
strips or riffles, which project backward and are a digit apart. The washer
or his wife lets the water into the head of the sluice, where he throws the sand
which contains the particles of gold. As it flows down he agitates it with a
wooden scrubber, which he moves transversely to the riffles. He constantly
removes with a pointed wooden stick the sediment which settles in the pockets
between the riffles, and in this way the particles of gold settle in them,
while the sand and other valueless materials are carried by the water into a
tub placed below the sluice. He removes the particles of metal with a small
wooden shovel into a wooden bowl. This bowl does not exceed a foot and a
quarter in breadth, and by moving it up and down in the stream he cleanses
the gold dust, for the remaining sand flows out of the dish, and the gold dust
settles in the middle of it, where there is a cup-like depression. Some make
use of a bowl which is grooved inside like a shell, but with a smooth lip where
the water flows out. This smooth place, however, is narrower where the
grooves run into it, and broader where the water flows out.