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affected the Pallat much more like salt-peter, than Common salt; but was also very fusible, and inflammable, though produced of two un-inflammable bodies: and the same substance, consisting of Acid salts, by a certain way of the Author, produced a Fixt salt.
6.Oyle of Vitriol pourell upon a Solution of Bay-salt: whence was abstracted a liquor, that by the smell and Taste appeared to be a spirit of salt. In which operation, the mixture, by working a great change of Texture, did so alter the nature of the compounding Bodies, that the sea-salt, though a considerably fixt Body, was distill'd over in a moderate Fire of sand, whilst the Oyl of Vitriol, though no such gross salt, was by the same operation so fixt, as to stay behind: Besides that the same, by a competent heat yielded a substance, though not insipid, yet not at all of the taste of Sea-salt, or of any other pungent one, much less having the highly corrosive acidity of oyl of Vitriol, &c.
7.A dissolvent, made by pouring a strong spirit of Nitre on the rectified Oyl of the Butter of Antinomy, and then distilling off all the liquor, that would come over, &c. This Menstruum (called by the Author Peracutum) being put to highly refined Gold, destroyed its Texture, and produced, after the method prescribed in the book, a true Silver, as its whiteness in colour, dissolublenes in Aqua fortis, and odious Bitterness, did manifest: which change of a Mettal, commonly esteemed to be absolutely indestructible by Art, though it be far from being Lucriferous, is yet exceedingly Instructive; as is also the way, the Author here adds, of Volatilizing Gold, by the power of the same Dissolvent.
8.Aqua fortis, concoagulated with differing bodies, produced very differing Concretes: And the same Numeral Saline Corpuscles, that being associated with those of one Mettal, had already produced a Body eminent in one Taste, did af-
