SOUTH AMERICA.

An insurrection broke out in Santiago, the capital of Chili, on the 20th of April. It was occasioned by excited political feeling, growing out of the approaching Presidential election. About twenty persons were killed, and fifty wounded. The province was immediately placed under martial law: and as the Government possesses much power, no further trouble was anticipated. About seven o'clock, on the morning of the 2d of April, Valparaiso was visited by a terrible earthquake. The earth continued to heave violently for a minute, throwing down a large number of buildings, and cracking and damaging others. The population assembled in the squares in the utmost terror and distress. Soon afterwards a heavy rain set in, which, on account of the shattered roofs, did immense damage to property. The entire loss is estimated at $1,500,000.

The Government of Brazil is adopting stringent measures for the suppression of the Slave Trade. Several of the most prominent dealers have been fined or forced to leave the country.

The hostility to Rosas in Brazil, Paraguay, Entre-Rios and the Oriental States, became so great, that, seeing no way of extricating himself from the difficulty, he offered his resignation to the Legislature of Buenos Ayres. This, however, was considered as merely a trick to shift the responsibility from his own shoulders. Five of the Argentine Provinces have passed resolutions refusing to accept his resignation, and restoring to him all his former powers. The city of Montevideo is still besieged by the forces of Gen. Oribe.