A bugle call and a loud cheer announced the news at the same moment.

"So they are!" exclaimed Mr. Mayberry, who by this time was standing upright, although he still had to lean weakly on the shoulder of Mr. Harkness.

"A good thing you didn't wait for them," remarked Blinky; "they'd have come too late."

"That was not their fault," put in Mr. Harkness. "The messenger I sent to Sentinel Peak could not have reached there more than an hour or two ago. They must have ridden like the wind."

Indeed, as the bronzed troopers clattered, cheering, into the rocky basin, their steaming, dripping horses bore ample testimony to the pace they had kept up.

"Confounded luck, arriving just too late for the music!" exclaimed the young officer at their head, after first greetings had been exchanged. "I see, though, that you have handled the situation well."

"Yes, thanks to the Boy Scouts," said Mr. Harkness.

"Ah, that is an organization of which I have often heard," observed the soldier. "They are destined to do great work for our country in the future."

"We hope so," said Rob simply.