The native ſalts belonging to this diviſion, may be diſtinguiſhed by the phlogiſticated alkaly which precipitates them all. The few which have ſaline properties (§ 20.) we ſhall mention here, referring the reſt to the mineralized metals.

CUPRUM vitriolatum (vitriol of copper, blue vitriol) is found in the mines of Herregrund, Fahlune, and others which contain copper pyrites.

FERRUM vitriolatum (vitriol of iron, green vitriol) is formed from the decompoſition of the more common pyrites.

FERRUM aeratum (iron with aerial acid) diſſolved by an exceſs of acid in the lighter chalybeate waters.

FERRUM nitratum, and ſalitum (iron with nitrous and muriatic acids) have never yet been found native.

NICCOLUM vitriolatum (vitriol of Nickel) ſometimes exiſts from the decompoſition of ſulphureous ores of Nickel.

ZINCUM vitriolatum (vitriol of zinc, white vitriol) is ſometimes, though rarely, produced By the decompoſition of pſeudogalena, or black Jack, becauſe this ſubſtance does not very readily decompoſe ſpontaneouſly.