the nuptials of James V, covered dishes filled with coins of _Scotch gold_ were presented to the guests by way of dessert. Standard gold of Great Britain is twenty-two parts pure gold, and two parts copper; it is therefore called gold of “twenty-two carots fine.” Some have thought that Moses made use of sulphuret of potass to render the calf of gold adored by the Israelites soluble in water. Stahl wrote a long dissertation to prove that this was the case. _Silver_ is a heavy, sonorous, brilliant, white metal; exceedingly ductile, and of great malleability and tenacity. It possesses these latter properties in so great a decree, that it may be beaten into leaves much thinner than any paper, or drawn into wire as fine as a hair without breaking. Fifty square inches of silver leaf weigh not more than a grain. The specific gravity of silver is 10.500. When perfectly pure, it is a very soft metal. To know when it is pure, heat it in a common fire, or in the flame of a candle: if it be alloyed, it will become tarnished; but if it be pure, it will remain perfectly white. Our standard silver is formed with fifteen parts pure silver, and one part copper. Silver is found in various parts of the world in a metallic state; also in the states of a sulphuret, a salt, and an oxide. Native silver is found chiefly in the mines of Potosi. Sulphuret of silver occurs in the silver mines of Germany, Hungary, Saxony and Siberia. Oxides of silver are also common in some of the silver mines in Germany. Silver has lately been found in a copper-mine in Cornwall.[106] Most of our lead mines also afford it, particularly some in Scotland. In the county of Antrim, in Ireland, there is a mine so rich, that every thirty pounds of lead ore is said to produce one pound of silver. By the silver which was produced from the lead mines in Cardiganshire, Sir Hugh Middleton is said to have cleared two thousand pounds a month, and that this enabled him to undertake the great work of bringing the New River from Ware to London. Silver was used in commerce eleven hundred years before the foundation of Rome. Moses, says, “And Abraham weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchant.” At this period silver was not coined, but being only in bars, or ingots, in commerce was always weighed. In the museum of the Academy of Sciences at St. Petersburgh, is a piece of _native_ silver from China of such firmness, that coins have been struck from it without its having passed through the crucible.[107]