"Why should they have delayed to set off the charge till we came back? Why not have set it off when we were all on the bridge, before we wheeled round to discover the origin of the shots on the hillside?" asked Mr. Merrill.

"Well, boss, it looks this way to me," said Bud, after a period of deep thought. "Them fellows had the trap all set and calculated that when we heard the firing we should stop and hesitate—as we did. Well, that, I take it, was the time that that charge should have been touched off, but somehow connections missed. We weren't on the bridge. That fellow with the rifle fired too quick. Then, too, them boys and Pete taking off after that treacherous varmint wasn't calculated on by them, in all probability, and what with one thing and another they missed their guess on the first charge."

"And on the second, too, by Christmas!" chimed in Ellis. "There ain't a pony missin' but the one you rode, Bud, and there ain't a man of us hurt; even that greaser you had on your saddle-bow got bucked off when your pony was blown over the edge."

"By the great horn spoon, that's right," said Bud, walking over to where the wounded Mexican lay.

"Still unconscious," he said, after a brief examination. "If only he could talk, boss," the cow-puncher added whimsically.

"That would do us no good, Bud," rejoined Mr. Merrill. "It would give us no clue to the fate of my poor boy and the others."

"Wouldn't it, boss?" echoed Bud. "Wa'al, in my opinion this saffron coyote here deserves careful keeping for future reference, for I believe he holds the key to the whole mystery."

"Heaven grant he does," breathed Mr. Merrill, his heart sinking as he thought of the possible destiny of Jack and his friends. "Without his aid I don't see what we are to do."

"Well," said Bud cheerfully, "ain't no good worryin'. We'll get 'em out of it all right, never fear, boss."

"Thanks, Bud, I hope we will," said Mr. Merrill, bravely putting his anxiety from him as best he could. "But the thing to do now is to find a safe place to camp for the night. We should not be overtaken by darkness in such a trap as this."