1the box; as soon as these
compartments are full and the water has begun
to flow over clear, the little launder through which this water enters into the
box is closed, and the water is turned in another direction. Then the
lowest riffle is removed from the sluice, and the sediment which has
accumulated flows out with the water and is caught in a bowl. The
riffles are removed one by one and the sediment from each is taken into a
separate bowl, and each is separately washed and cleansed in a bowl. The
larger particles of gold concentrates settle in the higher compartments, the
smaller size, in the lower compartments. This bowl is shallow and smooth,
and smeared with oil or some other slippery substance, so that the tiny particles
of gold may not cling to it, and it is painted black, that the gold may be more
easily discernible; on the exterior, on both sides and in the middle, it is
slightly hollowed out in order that it may be grasped and held firmly in the
hands when shaken. By this method the particles or concentrates of gold
settle in the back part of the bowl; for if the back part of the bowl is
tapped or shaken with one hand, as is usual, the contents move toward the
fore part. In this way the Moravians, especially, wash gold ore.
to flow over clear, the little launder through which this water enters into the
box is closed, and the water is turned in another direction. Then the
lowest riffle is removed from the sluice, and the sediment which has
accumulated flows out with the water and is caught in a bowl. The
riffles are removed one by one and the sediment from each is taken into a
separate bowl, and each is separately washed and cleansed in a bowl. The
larger particles of gold concentrates settle in the higher compartments, the
smaller size, in the lower compartments. This bowl is shallow and smooth,
and smeared with oil or some other slippery substance, so that the tiny particles
of gold may not cling to it, and it is painted black, that the gold may be more
easily discernible; on the exterior, on both sides and in the middle, it is
slightly hollowed out in order that it may be grasped and held firmly in the
hands when shaken. By this method the particles or concentrates of gold
settle in the back part of the bowl; for if the back part of the bowl is
tapped or shaken with one hand, as is usual, the contents move toward the
fore part. In this way the Moravians, especially, wash gold ore.
The gold particles are also caught on frames which are either bare or
covered. If bare, the particles are caught in pockets; if covered, they
covered. If bare, the particles are caught in pockets; if covered, they
A—PLANK. B—SIDE-BOARDS. C—IRON WIRE. D—HANDLES.
zoom in
zoom out
zoom area
full page
page width
set mark
remove mark
get reference
digilib