Touch"stone` (?), n. 1.
(Min.) Lydian stone; basanite; -- so called because used to
test the purity of gold and silver by the streak which is left upon the
stone when it is rubbed by the metal. See Basanite.
2. Fig.: Any test or criterion by which the
qualities of a thing are tried. Hooker.
The foregoing doctrine affords us also a touchstone
for the trial of spirits.
South.
Irish touchstone (Min.), basalt, the stone
which composes the Giant's Causeway.
Touch"stone` (?), n. 1.
(Min.) Lydian stone; basanite; -- so called because used to
test the purity of gold and silver by the streak which is left upon the
stone when it is rubbed by the metal. See Basanite.
2. Fig.: Any test or criterion by which the
qualities of a thing are tried. Hooker.
The foregoing doctrine affords us also a touchstone
for the trial of spirits.
South.
Irish touchstone (Min.), basalt, the stone
which composes the Giant's Causeway.
