But what is the alluvial gold region to the mountain region from which the precious metals with which it abounds have been torn down by the storms and wintry torrents of thousands of years! If you find a _detritus_ of a certain description in the mixed sand and gravel of a plain, you may predicate with perfect certainty the existence of mountains and rocks of the same formation in the higher regions from which it has been brought down. Granite or mica-slate _debris_ in the beds of rivers or the level fields which they occasionally overflow, imply granite or mica-slate in the hilly region from which they take their rise. Whence has all the gold come which in the alluvial plains of California is producing such treasures, and changing prices over the whole world? It has come down from the mountains. And what must be the metallic riches with which they are charged, when the washed-down gravel at their feet is so prolific of mineral wealth! The bullionists, influenced by dread of a general rise of prices, and depreciation of the exchangeable value of their realised fortunes from this rise, say there is a "Currency Restriction Act of Nature;" that gold at any depth is unworkable at a profit; that Providence is niggardly of its bounty; and they in secret indulge the hope that it will continue permanently that contraction of the currency which they have contrived to force upon mankind, and which, while it lasted, has proved so eminently profitable to themselves. But a little consideration must show that their hopes in this respect are entirely fallacious. Granting that the veins of gold, when they go deep, are embedded in very hard rock, what is to be said to the cropping out of the veins over the vast extent of the auriferous Rocky Mountains? If the wasting away of wintry storms on the tops and sides of these mountains brings down such quantities of gold with the streams which furrow their sides, must not the laborious hand of industry prove equally efficacious in removing it? If the expansive force of a rapid thaw, following severe frost, can rend the rocks in which the gold is embedded, is not the power of gunpowder or steam equally great? Already a company, composed of English capitalists, has been formed to explore the mountain treasures; and without supposing that they are to find an El Dorado in every hill, and admitting that there may be several failures before the right one is hit on, it is morally certain that in the end the mountain reserves of treasure must be discovered.