In Australia, the gold discoveries, so new and surprising to the public, are not new to the scientific world. More than two years ago, in an "Essay on the Distribution of Gold Ore," read before the British Association, to which our readers will be indebted for some of the facts contained in the present gossip, Sir Roderick Murchison "reminded his geological auditors that, in considering the composition of the chief, or eastern ridge of Australia, and its direction from north to south, he had foretold (as well as Colonel Helmersen, of the Russian Imperial Mines) that gold would be found in it; and he stated that, in the last year, one gentleman resident in Sydney, who had read what he had written and spoken on this point, had sent him specimens of gold ore found in the Blue Mountains; while, from another source, he had learnt that the parallel north and south ridge in the Adelaide region, which had yielded so much copper, had also given undoubted signs of gold ore. The operation of English laws, by which noble metals lapse to the crown, had induced Sir Roderick Murchison to represent to Her Majesty's Secretary of State that no colonists would bestir themselves in gold-mining, if some clear declaration on the subject were not made; but, as no measures on this head seemed to be in contemplation, he inferred that the government may be of opinion, that the discovery of any notable quantity of gold might derange the stability and regular industry of a great colony, which eventually must depend upon its agricultural products." That was the language used by Sir Roderick Murchison in September, 1849; and in September, 1851, we are all startled by the fact which brings emphatic confirmation of his prophecy.
But it is not only about the Blue Mountains, and in other districts, where the gold is now sought, that the geologic conditions under which gold may be sought reasonably are fulfilled. Take, for example, the Ural Mountains. In very ancient times the Scythian natives supplied gold from thence; and gold was supplied also by European tribes in Germany and elsewhere. Most of those sources were worked out, or forgotten. Russia for centuries possessed the Ural, and forgot its gold. Many of us were boys when that was rediscovered. The mountains had been worked for their iron and copper by German miners, who accidentally hit upon a vein of gold. The solid vein was worked near Ekatrinburg--a process expensive and, comparatively, unproductive, as we shall presently explain. Then gold being discovered accidentally in the superficial drift, the more profitable work commenced. It is only within the last very few years that Russia has discovered gold in another portion of her soil, among the spurs of the Altai Mountains, between the Jena and the Lenisei, and along the shores of Lake Baikal. This district has been enormously productive, and, for about four years before the discovery of gold in California, had been adding largely to the gross amount of that metal annually supplied for the uses of society. The extent of this new district now worked is equal to the whole area of France; but all the gold-bearing land in Russia is not yet by any means discovered. The whole area of country in Russia which fulfills the conditions of a gold-bearing district is immense. Eastward of the Ural Chain it includes a large part of Siberia; and also in Russian America there is nearly equal reason for believing that hereafter gold will be discovered.