SOUTH AMERICA.
The news of the downfall of Rosas is fully confirmed, and the dethroned despot had reached Great Britain. We have further details of the decisive battle at Santos Lugares, which was far less bloody than was originally represented. Rosas had collected in the intrenched camp there about 20,000 men, of whom the great majority were entirely inefficient, and none were under proper organization. The vanguard composed of 5000 men under General Pacheco was dispersed and driven back by Urquiza upon the intrenchments, and three days after, the whole army of Urquiza offered battle in front of the fortifications. The two armies were about equal in numbers—the attack being general throughout the whole line, which extended over six miles. Rosas, finding that there was very great disaffection among his own troops, seems to have abandoned the contest at an early stage, and to have sought personal safety in flight. He left the centre of his line, composed of picked infantry and artillery, under the command of Chilavert, a deserter from Urquiza's army, but a man of undaunted courage. This was the only part of Rosas' army which maintained the fight. When it was routed, Chilavert was taken prisoner and immediately shot as a deserter. The news of the result had been received with unusual satisfaction. One of the earliest acts of the new Government was to appoint new justices of the peace, both for Buenos Ayres and for the country districts. A general amnesty had been proclaimed. Decrees had been issued restoring to their owners, houses and other property which Rosas had confiscated. Passports, which Rosas had required for traveling from one part of Buenos Ayres to another, had been abolished. The property of Rosas had been declared to belong to the State. Public affairs wore an appearance of encouraging tranquillity.
From Ecuador we have news of the progress of the invading force under Gen. Flores. He had reached the Island of Puna, in the river a few miles below the city of Guayaquil, and had taken possession of it. He had under his command a large man-of-war and three other vessels, transports, for conveying his troops. He had anchored off the island, waiting for expected reinforcements. The Government of Ecuador had a force of about 4000, with which it was preparing to resist his invasion. It had addressed a circular to all the representatives of foreign powers, threatening to treat as pirates all who should aid him. The pretext for his attack grows out of proceedings while he was President of Ecuador, an office which he held for two years. He then packed a convention, caused a new constitution to be adopted, and had himself proclaimed President for eight years longer. These proceedings caused a revolution which drove him out of the country, first making an agreement with the leaders of the revolution that they should pay him $70,000 and an annual salary, with military pensions for his officers, as the condition of his leaving. The present Government does not feel bound to fulfill these stipulations, and has refused to pay him his salary. The ostensible object of his expedition is to enforce its payment; but its success would of course place the government in his hands. He has no party of adherents in the country. It is stated that the American ship Lyons had left Valparaiso with 350 men and large supplies of ammunition to join him.