Show screw another now new maier has been introduced it is on tire the screw A craw screw say three or four flanges shoes at taLlied enclosed in a cylinder 3 fixed vertically to in a pin sloping z inward at the bottom the erico edco of tile the pan the cylinder and its sides is divided by felir inclined pai sloping from the top of the cylinder to the lower martof part of the pan and between each is an opening in the cylinder when the derew it ii rotated the pulp of erns crushed ea quartz and quicksilver pass into the cylinder down the bo threads Ibro tzi tile the hol holes S in the aylin arlin ler am up lip the inclined pe pianca anes buck into the cylinder and so eo or on if the iho motion of f ibo screw is reversed the miss of pulp and quick quicksilver ilver is forced upward thronia yh ilo cylinder from every overy point or of which it is discharge in ft a L pray falling fl linc down the sides of 0 the pan and partition virti tion and then lien railed again in the same manner by the ho screw by this constant working it Is s claimed that the quicksilver cornea comes in contact with and secures every particle of the precious tileta atals ls american journal of mining |