As though in response to the question, there was a sharp bark from the thicket, and the next moment Tanto sprang up onto the mound and attacked one of the lifeless bodies.

Both the boys turned at the unexpected arrival, only to confront Don Antonio and an officer of the rurales, who clambered up beside the boys.

“What is the meaning of all this?” demanded the officer, gazing first at the boys and then at the dog and his victims.

“You know as much about it as we,” replied Adrian; “but anyone can guess what has happened,” and he proceeded to tell the officer about seeing Guadalupe taken into captivity by the smugglers and the finding of the bodies, while Don Antonio called Tanto away and ordered the peons who had followed him to cover the bodies with branches until they could be properly cared for.

“Well,” exclaimed the captain, for so the officer proved to be, “we have evidently run to earth a desperate band; but I am not sure whether they are simply smugglers or revolutionists.”

“The presence of Don Rafael leads me to believe they are the latter,” said Don Antonio.

“We shall very soon find out,” declared the captain. “My men will be here shortly, and we will force the door to the cave and run them out and capture them.”

“How?” queried Donald.

“Very simply! I will station a part of my men in front of the cave. Then I will force the rear door! If they try to escape by boat, they will be either captured or shot. If they turn and show fight, we will be in sufficient force to overpower them.”

“And, while you are doing this, what do you think will happen to our friend and to Don Antonio’s niece?”