Munroe was thus enabled to collect for the defence of the post, including the two companies of artillery and the rangers, amounted to about 500 men. His artillery consisted of sixteen brass six pounders, two long eighteens, and two ship's guns. He was amply provided with ammunition, and felt confident that he could with stand a force three times his own in number. Though the enterprise was a most hazardous one, Captain Walker offered to be the bearer of a communication from Major Munroe to General Taylor, apprizing him of the situation of the depot, provided four men would accompany him. Permission was given him to make the attempt, and six men volunteered to go with him. He left the Point with his party, on the morning of the 29th of April; the service was full of peril, as every bush and thicket were supposed to conceal a hidden enemy; but he succeeded, on the evening of the same day, in reaching the camp opposite Matamoras, in safety, after making several hairbreadth escapes; on one occasion cutting his way through a body of Mexican lancers who endeavored to intercept him.
Previous to this time, General Taylor had been informed that the enemy were preparing to cross below his camp, with the view of effecting a junction with the force under General Torrejon. The design of Arista was at once apparent. Ever since the blockade, provisions had been scarce in Matamoras. The prize at Point Isabel had attracted his attention, and he had determined to procure it. This position in his hands. General Taylor would be cut of from his supplies, and from all communication with New Orleans, by water, the only mode by which he could be immediately reinforced, or furnished with military stores and provisions. The
