Frank and his two friends had thought of all these things during the day, and they knew just what perils they were likely to encounter; but they were not formidable enough to turn them from their purpose. While they were crawling cautiously through the grass, they had been allowed ample time to make up their minds what they would do, if their flight should be discovered before they got out of the glade; and, consequently, when the yells of the sentinel, and the reports of his pistol, told them that the pursuit was about to begin, they did not hesitate, but proceeded at once to carry out the plans they had formed. Archie, the moment he jumped to his feet, darted toward the cliffs, while Frank and Johnny ran for the ledge by which they had entered the pass in the morning; and, by the time the Rancheros were fairly awake, their prisoners had disappeared as completely as though they had never been in the glade at all.

Archie had chosen the most difficult way of escape, and he had done so with an object. He believed that, as soon as Pierre and his band became aroused, they would rush in a body for the path that led toward the settlement; and Archie did not like the idea of running a race through the darkness along the brink of that precipice. He might make a misstep, and fall into the gorge, and that would be infinitely worse than remaining a prisoner. His enemies, he thought, would not be likely to follow him up the cliffs; but if they did, and he found that he could not distance them, there were plenty of excellent hiding-places among the bushes and rocks, where he could remain in perfect security, with an army searching for him. Johnny and Frank did not look at the matter in that way. They thought not of concealment; they took the nearest and easiest way home, and trusted entirely to their heels.

"Help! help!" shouted the sentinel, discharging the barrels of his revolver in quick succession. "The boys have gone!"

For a moment, great confusion reigned in the camp. The Rancheros sprang to their feet, and hurried hither and thither, each one asking questions, and giving orders, to which nobody paid the least attention, and the babel of English and Spanish that arose awoke the echoes far and near. The chief was the only one who seemed to know what ought to be done. He examined the beds to satisfy himself that the prisoners had really gone, and then his voice was heard above the tumult, commanding silence.

The first thing he did, when quiet had been restored, was to swear lustily at the sentinel, for allowing the prisoners to escape, and then he set about making preparations for pursuit. He sent two of the band on foot down the path that led toward the settlement, another he ordered to saddle the horses, and the rest he commanded to search every nook and corner of the glade.

As long as the noise continued, Archie worked industriously; and, being a very active fellow, he got up the mountain at an astonishing rate. But as soon as the chief had succeeded in restoring order, he sat down to recover his breath, and to wait until the Rancheros left the glade: for he was fearful that the noise he necessarily made, in working his way through the thick bushes, might direct his enemies in their search.

Although it was pitch dark on the mountainside, Archie could tell exactly what was going on below him. He knew when the two men left the glade, chuckled to himself when he heard the Ranchero, who had been ordered to saddle the horses, growl at the restive animals, and noted the movements of the party who were searching the bushes. He distinctly heard their voices, and he knew that Arthur Vane was with them.

"Do you think they will get away, Joaquin?" he heard the traitor ask.

"That's hard to tell," was the reply. "It depends a good deal upon how long they have been gone. If they get back to the settlement, you had better keep away from there."

"That's so," said Archie, to himself.