"Hooray!" shouted the boys, and, amidst all the rejoicing shouts, there came a sudden cry of recognition from Jack as his eyes fell on Walt Phelps' mount.

"Firewater!" he cried, and the pony shared his greetings and congratulations with the three newly-recovered members of the party.

It was soon told how Coyote Pete and Jack, with Jim Hicks and old Sam Simmons, on their way from the dam, had fallen in with the Merrill party near the mission. It was believed that Black Ramon and his men were ambushed there. Then they had decided to make no attack at once, but close in on the place when the troops had been met with, and in this way make the round-up of the rustlers complete.

Ralph, Walt and the professor rapidly told of their escape, and Jim Hicks emitted a whoop when he heard that the treasure had, in all likelihood, been located. Further relation of all their exciting adventures was put aside by them all till Ramon and his band should have been captured.

After a brief consultation, it was decided to advance in a fan-shaped formation on the old mission, gradually closing in as they neared it. If Ramon and his band were ambushed there, they could make deadly defense from its strong walls, and neither Mr. Merrill nor the Mexican captain were anxious to lose any men if it could be helped.

Accordingly, the line moved cautiously forward till it was within a few hundred yards of the building. Up to that moment the old place had been silent and deserted as a tomb. Suddenly, however, as the attackers advanced, a fusillade was opened from the tower. Lead spattered on the rocks about them, but, fortunately, nobody was hit. Ralph turned rather pale. It was the first time he had ever been shot at.

"Better get behind this ridge," said Mr. Merrill, as the fire grew hotter.

Accordingly, the attacking party dropped low into a gully. The firing instantly stopped.

"If only we could draw enough of their fire to exhaust their ammunition," mused the rancher.

"I have a plan," cried Jack suddenly.