"Some estimates have lately been formed of the shipments of gold received in Europe from California to the present time, which, we believe, may be regarded as tolerably accurate, and according to which the amount is about £3,300,000. On the other side, up to the end of September, the receipts at the two mints of the United States had been about 31,000,000 dols., or £6,200,000. Since that time we have had advices of farther arrivals at New York and New Orleans amounting to £500,000. An aggregate is consequently formed of exactly £10,000,000. To this must be added, in order to estimate the total production, not only the amounts which have found their way to China, Manilla, Australia, Oregon, the Sandwich Islands, the States of Spanish America, &c., but also the total which has been retained in California for the purposes of currency. The population in that country now ranges somewhere between 200,000 and 300,000, and although a considerable amount of silver dollars have been imported, the bulk of the circulation is believed still to be in the form of gold-dust or of gold tokens. If the 250,000 persons possess, on an average, £10 a-piece, we have a sum of £2,500,000; and, looking at the expense of a week's maintenance in the country, as well as the large quantities constantly in transit, as well as the reserves, which, as was shown by the last advices, the various deposit-houses are compelled to retain to meet sudden runs, it is probable that this is under the real total. Taking all points into consideration, it may, therefore, be assumed that the whole which has been raised is equal to at least £13,000,000 sterling. Of this production, according to recent official returns from the United States, nearly four-fifths have taken place during the present year. Of 25,966,817 dols. received in the United States Mint at Philadelphia, up to the end of September last, only 44,177 dols. had arrived in 1848, and 5,481,430 dols. in 1849, while the quantity in 1850 had been 20,441,210 dols. The same proportions would probably prevail with regard to the sums distributed to other places; and we are, therefore, led to the supposition that the export this year has already actually reached upwards of £10,000,000, although the results of two additional months have yet to be known. It will be observed, consequently, that the unexpected feature which has hitherto attended the progress of this new region--namely, that almost all the accounts from it, although deemed exaggerations at first, have proved ultimately to have been understatements--is still presented. At the commencement of 1850 the most sanguine expectations that were formed in any direction fixed its probable yield at £10,000,000; and not only has this been exceeded, but each quarter of the year has thus