“I can hold him now,” said the latter. “Shut that door, and get something to tie him with.”

The ropes with which Frank had been bound were brought into requisition, and in a few seconds, the Mexican, in spite of his furious struggles, was helpless. Archie had shown considerable generalship in the part he had played in this transaction. If the Ranchero had been permitted to return to his friends, he would, of course, have informed them that Frank had been liberated by somebody, and that would have told the Don just where to search for Archie. He knew that Archie was somewhere in the rancho, but thus far he had been unable to get on the track of him. The building was large, the underground rooms and passage-ways numerous, the doors all locked, and as long as the boys could keep their enemies from learning their exact whereabouts, there was little danger of capture.

“Now, then, what is to be done with this fellow?” asked Frank, when his cousin had securely bound the prisoner.

“Let’s give him one for Dick Lewis,” said Archie, brandishing his heavy pistol in the air. “A crack over the head with this would do him a wonderful sight of good.”

“No! no!” exclaimed Frank. “He took no part in that affair.”

“No doubt he would if he had had the chance. Let’s lock him in here, and leave him.”

“He’ll call for help, won’t he?”

“We don’t care if he does. Even if he succeeds in making himself heard through these thick walls, his friends can’t release him until they have cut down one of these doors; and by the time they get that done, we may be out of this den of robbers, and half way home.”

Archie began trying his keys in the lock of of the door, and finally found one that would fit it. Then, after the prisoner had been pulled into one corner, the cousins passed out of the room, locking the door after them.