A—HEAD OF THE SLUICE. B—SIDE-BOARDS. C—LOWER END OF THE
SLUICE.
D—POCKETS. E—GROOVES. F—STOOLS. G—SHOVEL. H—TUB SET BELOW.
I—LAUNDER.
D—POCKETS. E—GROOVES. F—STOOLS. G—SHOVEL. H—TUB SET BELOW.
I—LAUNDER.
Some people cut a number of cross-grooves, one palm distant from each
other, in a sluice similarly composed of three planks eight feet long. The
upper edge of these grooves is sloping, that the particles of gold may slip into
them when the washer stirs the sand with a wooden shovel; but their lower
edge is vertical so that the gold particles may thus be unable to slide
out of them. As soon as these grooves are full of gold particles mixed
with fine sand, the sluice is removed from the stools and raised up on its
head. The head in this case is nothing but the upper end of the planks
of which the sluice is composed. In this way the metallic particles, being
turned over backward, fall into another tub, for the small stones and gravel
have rolled down the sluice. Some people place large bowls under the
sluice instead of tubs, and as in the other cases, the unclean concentrates are
washed in the small bowl.
other, in a sluice similarly composed of three planks eight feet long. The
upper edge of these grooves is sloping, that the particles of gold may slip into
them when the washer stirs the sand with a wooden shovel; but their lower
edge is vertical so that the gold particles may thus be unable to slide
out of them. As soon as these grooves are full of gold particles mixed
with fine sand, the sluice is removed from the stools and raised up on its
head. The head in this case is nothing but the upper end of the planks
of which the sluice is composed. In this way the metallic particles, being
turned over backward, fall into another tub, for the small stones and gravel
have rolled down the sluice. Some people place large bowls under the
sluice instead of tubs, and as in the other cases, the unclean concentrates are
washed in the small bowl.
The Thuringians cut rounded pockets, a digit in diameter and depth, in
the head of the sluice, and at the same time they cut grooves reaching from
one to another. The sluice itself they cover with canvas. The sand which
the head of the sluice, and at the same time they cut grooves reaching from
one to another. The sluice itself they cover with canvas. The sand which
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