From British America there is not much intelligence of importance. The recent elections have resulted favorably for the liberal party. A few days ago the first vessel passed through the new channel of Lake St. Peter, which has been constructed at a cost of $320,000. The dredging is to be continued next season; and it is expected that by July the channel will be 150 feet wide, and of adequate depth. By a new regulation of the Post Office Department, all newspapers pass free between Canada and the adjoining lower Provinces. The seat of Government has been changed four times in 11 years. In 1840 it was at Toronto; next year the union of the Provinces having been effected, it was at Kingston. From 1843 to 1849 it was at Montreal. Toronto then became the capital; and now it has moved to Quebec, under a pledge to come back at the expiration of four years. Respecting the final result of the late movements of Carvajal in Mexico it is not easy to form a conclusion, as the accounts are very contradictory. Notwithstanding his recent discomfiture, it seems to be believed that in the present distracted and impoverished condition of Mexico, he may succeed. General Aragua had arrived at Matamoras with 80 men, with several pieces of artillery and one mortar, to reinforce General Avalos. General Carvajal had not more than five or six hundred men. The Mexican troops in Matamoras number 2,000. From Nicaragua we learn, that on the 19th of November General Munoz, his officers, and twenty-seven Americans, were captured by General Chamorro, and committed to prison. If this intelligence is true, there is an end of the war in that quarter. From South America intelligence is as usual confused and unsatisfactory. By way of England we have dates from Montevideo to the 12th Oct. The war in the Banda Oriental was terminated. Oribe had retreated to his country house at Rinton. The Argentine forces were reported to have joined Urquiza. The Orientals had joined Gen. Garzon. A Provisional Government was talked of. The chief results had been effected without bloodshed.