A piece of styriated Sal Gemmeus tinctur'd with partly an Amethystine, partly a Saphirine Blew.

Ambrosinus gives a Figure of Crystal of this Salt, much like that of the Corns of common Sea-Salt; from which it differs no more, than Pit-Salt.

Sal Fossilis properly so call'd, is, as it were, the Ore of the Sal Gemmeus. Yet This, as well as Metals, is sometimes found native. The principal Mines are in Poland and Calabria: of which, see a Relation in the Phil. Transactions. (a)(a) N. 61. In the lesser Poland, saith Comer, (b) (b) Descript. Polan. lib. 1. are some pieces of this Salt (he means the Ore) like huge Stones; so hard, that Houses and even whole Towns are built with them. Near Eperies, a City in Upper-Hungary, is a Salt-Mine, in which are pieces Ten thousand pounds weight. (c)(c) Dr. Brown's Travails, p. 112.

Of This as of common Salt, may be distill'd that Acid Liquor commonly, but absurdly call'd the Oil. This moderately taken, but especially if it be dulcify'd by Cohobations with a simple, or rather with an aromatiz'd Spirit of Wine, is sometimes of excellent use to restore the Digestive Faculty to the Stomach. But the common sort, taken, as it often is, without discretion, really breeds more Diseases, than it pretends to cure. See several Preparations of Salt in Schroder and others. Ambrosinus, I think it is, who reports, (d) (d) Aldrov. Mus. Metal. That in the Province of Canicla, in the Great Cam's Dominions, the people melt and cast Salt into a round Form, for Money. But who ever knows the nature of common Salt, must also, that this Report is a great mistake.