The crystalline protoxide of antimony obtained by inflaming, volatilising, and condensing the regulus was known as argentine flowers of antimony. The regulus heated with nitric acid yielded a compound of metal with antimonious acid, and was called mineral bezoar; a compound, really a suboxide, got by fusing sulphide of antimony and nitre was called diaphoretic antimony; the chloride, first made by distilling crude antimony (the native sulphide) with corrosive sublimate, yielded the thick soft butter of antimony; the addition of water to this chemical caused the precipitation of a white oxychloride which was long known as Algaroth’s powder, or mercury of life. It contained no mercury, but was the most popular emetic before the introduction of the tartrate. Victor Algarotti, who introduced it, was a physician, of Verona, who died in 1603. It was alleged that he was poisoned by his local rivals in consequence of the success of his remedy. He was also the inventor of a quintessence of gold. The regulus of antimony in alloy with some tin was used to make the antimony cups from which antimonial wine originated. It was also made into the pilulæ perpetuæ, or everlasting pills, which, passing through the body almost unchanged, were kept as a family remedy and taken again and again. It is probable that the surface of these pills became slightly oxidised, and consequently acquired a medicinal effect. KERMES MINERAL. One of the most famous of the antimony compounds was the kermes mineral, which it is understood was invented by Glauber about 1651. He made it by treating a solution of the oxide of antimony with cream of tartar, and then passing a current of sulphuretted hydrogen through the solution. An orange-red powder was obtained, and famous cures were effected by it. Glauber kept his process secret, but a Dr. de Chastenay learnt it after Glauber’s death from one of his pupils and confided it to a surgeon named La Ligerie, who in his turn communicated it to Brother Simon, a Carthusian monk, who at once commenced successfully to treat his brother monks with it, and soon after the Poudre des Chartres was one of the most popular remedies in France for many serious diseases, small-pox, ague, dropsy, syphilis, and many others. In 1720 Louis XIV bought the formula for its preparation for a considerable sum from La Ligerie. It has been agreed by chemists, Berzelius and others, who have studied Kermes Mineral, that it is a mixture of about 40 per cent. or less of oxide of antimony with a hydrated sulphide of the metal, and a small proportion of sulphide of sodium or potassium (according to the method of preparation). It is still official in the Pharmacopœias of the United States and of many Continental countries.