with Spirit of Nitre, or Vine∣gar, or any other proper A∣cid: but, says he, this opening Crocus is made with a very gentle Calcination: The Cro∣cus being made, you may easi∣ly make the Salt by the or∣dinary Method of Extracti∣on with fair Water, filtering, and crystallizing.
§ 3. Our Author in his Text, exactly follows Schro∣der, but he orders it to be often dissolved and coagula∣ted, that the Salt may be sweetish: Where note, that in the first dissolution of the Steel in A. R. if you can∣not filter it, because it cor∣rodes the Paper, you must mix the greater quantity of Water with it, that it may not be so sharp, and it will filter the better.
§ 4. Gregorius Horstius in his Epistle to his Observati∣ons says, that this Salt will cut and open the worst Ob∣structions of the Bowels and Womb, and may be given, à gr. iv. ad viij. it cures the Cachexia and Green-sickness in Virgins.
§ 5. Authors seem to make a difference between the Vitriol of Mars, and the Salt of Mars, tho' they are both but Salts of Mars, and both do one and the same thing: but there is this difference in the Preparation, that the Vi∣triolum Martis is made with the Oil or Spirit of Vitriol or Sulphur, with the addition of some Water; whereas the Sal Martis is made only with Spirit of Vinegar.
§ 6. Riverius his Vitriolum or Sal Martis is thus made. ℞ Oil of Vitriol or Sulphur lbss. S. V. lbj. mix them in a new clean Iron Frying-pan, co∣ver it with a sheet of white Paper, and digest fifteen days so will there be a white Salt like gathering, which set in the Sun and dry it throughly, stirring it sometimes with an Iron Spatula; in the Winter dry it in a gentle Sand-heat, and keep it in a Glass close stopt for use.
§ 7. This he commends as an admirable thing against the most contumacious Ob∣structions of the Liver, Spleen, Womb, or the other Vis∣cera: and it is said to be a perfect Cure for Hypochon∣driack Melancholy, above all other Medicaments. Dose, à ℈ss. ad ℈j. in Wine or other Liquor.
§ 8. Crollius makes a Salt of Iron by cementing Calx of Iron with Sulphur, and then extracting it with hot Water, filtering, and crystallizing ac∣cording to the usual Method.