The general aspect of the affairs of our highborn American nations of the south has been rather of approaching than of settled tranquillity. Internal disturbances have been more frequent among them than their common friends would have desired. Our intercourse with all has continued to be that of friendship and of mutual good will. Treaties of commerce and of boundaries with the United Mexican States have been negotiated, but, from various successive obstacles, not yet brought to a final conclusion. The civil war which unfortunately still prevails in the Republics of Central America has been unpropitious to the cultivation of our commercial relations with them; and the dissensions and revolutionary changes in the Republics of Colombia and of Peru have been seen with cordial regret by us, who would gladly contribute to the happiness of both. It is with great satisfaction, however, that we have witnessed the recent conclusion of a peace between the Governments of Buenos Ayres and of Brazil, and it is equally gratifying to observe that indemnity has been obtained for some of the injuries which our fellow-citizens had sustained in the latter of those countries. The rest are in a train of negotiation, which we hope may terminate to mutual satisfaction, and that it may be succeeded by a treaty of commerce and navigation, upon liberal principles, propitious to a great and growing commerce, already important to the interests of our country. The condition and prospects of the revenue are more favorable than our most sanguine expectations had anticipated. The balance in the Treasury on the 1st of January last, exclusive of the moneys received under the convention of 13th of November, 1826, with Great Britain, was $5,861,972.83. The receipts into the Treasury from the 1st of January to the 30th of September last, so far as they have been ascertained to form the basis of an estimate, amount to $18,633,580.27, which, with the receipts of the present quarter, estimated at $5,461,283.40, form an aggregate of receipts during the year of $24,094,863.67. The expenditures of the year may probably amount to $25,637,111.63, and leave in the Treasury on the 1st of January next the sum of $5,125,638.14. The receipts of the present year have amounted to near two millions more than was anticipated at the commencement of the last session of Congress.