While Mora had marched into the Meridional Department, a body of 250 Costa Ricans had been sent to the Serapaqui in order to cut off Walker’s communications by the San Juan river. Capt. Baldwin, a vigilant and intelligent officer, was at Hipp’s Point when he ascertained the enemy were cutting a road toward the river. He did not wait for the enemy to reach him; but, ascending the Serapaqui, he vigorously assailed the Costa Ricans while they were cutting the road, and drove them back with large loss and in extreme confusion. He himself lost one killed, Lieut. Rakestraw, and two wounded; while the enemy left more than twenty dead on the field. This affair of the Serapaqui took place on the 10th of April; and the routed Costa Ricans did not stop in their flight until they had fallen back to San José. Immediately on reaching Granada the general-in-chief wrote to the President at Leon a detailed statement of the action at Rivas; and a day or two afterward he sent Mr. Fabens with letters to Don Patricio, suggesting the appointment of Father Vigil as Minister to the United States. The President replied to the letter concerning the engagement with the Costa Ricans, thanking the army, in the name of the Republic, for the courage and the conduct it had shown in the attack on the invaders of Nicaragua; and Mr. Fabens brought back with him the credentials and instructions of Vigil as Minister. The latter forthwith got ready to leave for San Juan del Norte in company with Mr. John P. Heiss. The priest agreed to leave his easy home in the tropics for the purpose of explaining properly to the cabinet at Washington the nature of the events occurring in Central America. During the absence of the main body of the army on the expedition to Rivas, Schlessinger had been left at Granada on parole. He had an opportunity to regain, to some extent, his lost character, by volunteering to march with the Americans against the enemy. But he did not take advantage of the occasion; on the contrary, he remained to acquire, if possible, new infamy by adding desertion to his former crimes. The court martial which was ordered to try him, found him guilty of all the charges brought against him; and he was sentenced to be shot, and to be published throughout the civilized world. He afterward joined a body of the Legitimists acting against the Americans, and in such society he sank, by the way he permitted himself to be treated, beneath the contempt of the lowest soldier in even a Central American army. He is now fallen so far that it would be an unworthy act to execute on him the sentence of an honorable court.