"Captain Don Luis Obregozo, take two hundred horse, and make a reconnoissance in the canyon; be very prudent, and do not venture too far. Don Pedro Castilla will hold himself in readiness to support you with five hundred cavalry, should it be necessary; the rest of the army will not cross the stream till your return. Go at once."

The two officers selected by the general immediately prepared to obey; the troopers, leaving the infantry they carried with the main body, crossed the ford, and galloped into the plain. The general gave orders for the troops to be drawn up in a column, in order to lose as little time as possible in passing, and, opening his telescope, he attentively followed the movements of the two detachments he had sent on ahead. The second body, commanded by Captain Castilla, halted about halfway between the stream and the canyon, ready to act on the first alarm, Captain Obregozo boldly pushed on, sending a few troopers ahead as scouts, while others scattered on either side the main body, and examined the thickets. The detachment advanced thus almost into the entrance of the defile, and nothing suspicious occurred. On reaching this point the captain ordered a halt.

"My lads," he said to his soldiers, "if the enemy is really in there, it is unnecessary for us all foolishly to enter the wolf's throat; a few men of good will are enough. Who will follow me?"

The soldiers remained motionless and silent.

"What?" the captain exclaimed with a frown, "Does not a man offer to follow me?"

"It is not that, Captain," an old sergeant replied roughly; "you know very well that we are all of good will and ready to follow you to purgatory; choose yourself the men you will take with you."

"Very good," the captain said gaily, as he pointed out five or six troopers. They at once quitted the ranks, and placed themselves behind the captain; The latter, after temporarily entrusting the command of the detachment to his lieutenant, with strict orders not to enter the defile, whatever might happen, but, on the contrary, to fall back on the reserve if he did not return, boldly entered the canyon, followed by his weak escort. Several minutes elapsed, and then a discharge was suddenly heard, and two riderless horses galloped back into the plain.

"The captain! Let us save the captain!" the dragoons shouted, as they waved their sabres frantically.

And without listening to the remonstrances of their lieutenant, who tried in vain to hold them back, they dashed irregularly into the defile. The officer, finding his efforts useless, bravely placed himself at their head. Then the sound of a regular combat and a well sustained musketry fire was audible.

"Let us support our brothers!" Captain Castilla exclaimed, drawing his sword.