Page:Theophrastus - History of Stones - Hill (1774).djvu/316

 The Salts in Urine that has tood long come nearer the Nature of Foils than any Thing we know; and Tartar, formed from Wine, is very difficult of Solution: Yet both thee may be melted in pure Water. The Salt produced by flow Crytalization from a Lixivium of Lime and Sulphur, comes nearet of all to Spar; but till it is but an Approach; and not a Samenes: As he who is well acquainted with all the Qualities of the vitriolated Tartar will perceive: Nor do I conceive Henkel's Receipt, formed on the ame Foundation, would go any farther: But till Men peak plain,'‘tis vain to war againt their buried Meaning.

In fine, the Formation of Spar is yet a Subject of Enquiry: Its Atoms are all Spar; each Particle into which we can without Violence divide it, is the ame in all Repects as the Whole: And as the Foil World admits no Generation, or Birth, by Egg, or Seed, it eems mot probable that all the Variety of Forms in which we ee this Protean Mineral, are owing to no Caue beide the Arrangement of Rhombs into as many Forms as they are capable of producing. It fills the Cracks of its own Rocks: And of no other: For Crytal Columns rie from crytaline Rocks; and from metallic Maes, fractur'd, grow Pyrite; each eparated from the great mixt Body we ee plit; and each formed into Figures by its own Laws, without the Intervention of Salt, or other Matter. We