"But how did he get out?" asked Dick.

"And what for?" Bud wanted to know,

"He got out this way!" said Old Billee quietly, as he leaned over the cot and pushed with his hand against the side of the tent. A right-angled opening was disclosed, cut with a sharp knife. The loose point was at the bottom, and once Four Eyes had slipped out, the cut flap hung down in place, not disclosing, in the dim light, that the canvas had been cut.

"He got out that way," went on Old Billee, "because th' tent sides, bein' fast t' th' board floor, wouldn't let him crawl out very easy. He's a slick one, Four Eyes is!"

"But why should he slip out this way? Did he do anything? And who was doing that signalling?" exclaimed Bud.

"I reckon you'll find, son, that the signallin' an' th' vamoosin' of our late friend Four Eyes had some connection," spoke Old Billee. "We, bein' intent on our game of cards, didn't know nothin' at all 'bout it till you fellows rode up. Now it's about time we got int' action!"

"You win!" declared Yellin' Kid loudly. "There's suthin' queer prospectin' around these diggings an' I'd like t' know what it is!"

"I guess we all would," spoke Bud. "And we'd better start right in to find out about it. Come on, boys," he called to his cousins, but the older cow punchers took the invitation to themselves also, and soon, with lanterns and flashlights (which handy little contrivances the boy ranchers nearly always carried) they began the search.

First they made sure that Four Eyes was playing no trick on them by hiding under one of the cots in the bunk tent. Though, as Bud pointed out, it would pass the bounds of fun to have cut the canvas shelter as it was cut.

But no trace of Four Eyes was to be found.