for such an enterprise, and his force was so weakened by detachments in aid of Pezuela, that he never attempted it.
The disasters suffered by the Patriots in this year were not fruitless; time was gained, in which San Martin perfected his preparations, and this he lengthened by entering into a correspondence with Osorio, proposing some arrangement for the prevention of further bloodshed. He also took advantage of the correspondence so established to set on foot an extensive system of spies and secret agents all over Chile, by whose means he propagated false intelligence of such great military preparations in Mendoza as filled Osorio with fears of an immediate invasion, and had still more effect upon the feebler spirit of Marcó del Pont, who relieved him of the command in December.
The secret agents, who rendered the greatest service to San Martin, he found among the Chilian refugees in Mendoza. When the talents or social position of any of these men inspired him with confidence, he put them under arrest on some charge of treachery, from which he aided them to escape and fly across the Andes, "from his tyranny." Their alleged sufferings disarmed the suspicions of the Spanish rulers of Chile to the extent that some of them were actually employed by them to procure information from the eastern side of the Andes. By their help San Martin discovered that several Spaniards in Mendoza held secret communications with Osorio. He arrested them, and by threats of immediate execution, compelled them to show him all the letters they received, and to return answers dictated by him. His principal care was to persuade the Spaniards that the projected expedition would attack the south of Chile, in order to induce them to relax their vigilance in the quarter which was really menaced, and to concentrate their troops in positions where they could be of no service.
His agents were incessantly occupied in furnishing him with details concerning the number, armament, and posi-
