Eaton S. Drone

Summary

Eaton S. Drone The American Cyclopædia (1879)

In the middle ages the art of working gold appears to have been little practised. The richness of the known mines was comparatively exhausted, and previous to the opening of the new fields following the discovery of America, the attention of metallurgists was directed to vain attempts to transmute the baser into the precious metals. It was estimated that at the time of the discovery of America the gold and silver in the old world, exclusive of the more or less unknown regions of the East, was reduced to about £34,000,000, and that the supply no more than met the loss by wear.
Source: Wikisource

Eaton S. Drone The American Cyclopædia (1879)

Even upon the elevated plains quite to the west of the hills gold is collected in strata of sand and clayey deposits, which cover the surface to the depth of 15 to 30 ft. or more. The clay is often seen to be but partially decomposed slate, still retaining the structure of this rock, which was evidently the matrix of the gold.—The general gold formation of California is found in the neighboring states and territories, the entire territories of the United States west of the Rocky mountains being more or less productive.
Source: Wikisource

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