Page:Theophrastus - History of Stones - Hill (1774).djvu/286

 produced, it is our, acrid, and diolvent; but in different Degrees, from the various Kinds: And beide, it is eparately endowed with different Characters from each.

Ditilled from Vitriol, it is unctuous, heavy, and very corroive: And after diolving calcareous Earth, forms with it a Selenite. In its concentrated State it diolves Silver, Tin, &c. when diluted, Copper, and Iron.

Ditilled from Salt, it is not unctuous; is little heavier than common Water; les corroive than from Vitriol; and after diolving calcareous Earth, forms with it, not Selenite, but a fixed Sal Armoniac. In its concentrated State it diolves Lead, &c.

Ditilled from the Swedih Stone, it is heavier than Acid of Salt, les heavy than the Vitriolic. It diolves the Calxes of Metals more readily than Metals themelves. In the very Act of Ditillation, it corrodes Glas; and the Stone itelf, mixed with a calcareous Earth, becomes a peculiarly corroive Matter, which diolves the bet and trongeft Crucibles.