Gold, next to iron, is the most widely diffused metal upon the surface of our globe. It occurs in granite, the oldest rock known to us, and in all the rocks derived from it; it is also found in the veinstones which traverse other geological formations, but has never been found in any secondary formation. It is, however, much more common in alluvial grounds than among primitive and pyrogenous rocks. It is found disseminated, under the form of spangles, in the silicious, argillaceous, and ferruginous sands of certain plains and rivers, especially in their junction, at the season of low water, and after storms and temporary floods. It is the only metal of a yellow color; it is readily crystallizable, and always assumes one or more of the symmetrical shapes, such as the cube or regular octahedron. It affords a resplendent polish, and may be exposed to the atmosphere for any length of time, without suffering any change; it is remarkable for its beauty; is nineteen times heavier than water, and, next to platinum, the heaviest known substance; its malleability is such, that a cubic inch will cover thirty-five hundred square feet; its ductility is such, that a lump of the value of four hundred dollars could be drawn into a wire which would extend around the globe. It is first mentioned in Genesis ii, 11. It was found in the country of Havilah, where the rivers Euphrates and Tigris unite and discharge their waters into the Persian gulf. The relative value of gold to silver in the days of the patriarch Abraham was one to eight; at the period of B.C. 1000, it was one to twelve; B.C. 500, it was one to thirteen; at the commencement of the Christian era, it was one to nine; A.D. 500, it was one to eighteen; A.D. 1100, it was one to eight; A.D. 1400, it was one to eleven; A.D. 1613, it was one to thirteen; A.D. 1700, it was one to fifteen and a half; which latter ratio, with but slight variation, it has maintained to the present day. Gold was considered bullion in Palestine for a long period after silver had been current as money. The first mention of gold money in the Bible is in David's reign (B.C. 1056), when that king purchased the threshing floor of Oman for six hundred shekels of gold by weight. In the early period of Grecian history the quantity of the precious metals increased but slowly; the circulating medium did not increase in proportion with the quantity of bullion. In the earliest days of Greece, the precious metals existed in great abundance in the Levant. Cabul and Little Thibet (B.C. 500) were abundant in gold. It seems to be a well ascertained fact, that it was obtained near the surface; so that countries, which formerly yielded the metal in great abundance, are now entirely destitute of it. Croesus (B.C. 560) coined the golden _stater_, which contained one hundred and thirty-three grains of pure metal. Darius, son of Hystaspes (B.C. 538), coined _darics_, containing one hundred and twenty-one grains of pure metal, which were