Potts would talk no more after this, but sat down on a rock to smoke his pipe and continue his guard duty.
The young captain had had his hands bound tightly behind him, and, try his best, he found himself unable to either break or slip his bonds.
He was anxious concerning himself, but he was even more upset concerning his brother and his cousin.
"If they kick up a fuss, more than likely Gilroy and the others will shoot them down!" he groaned. "It's too bad! I thought we would have a splendid time hunting, and here we are, falling into all sorts of difficulties."
As impatient as he was, he could do nothing but stalk around the cave. The place was five yards wide by over a hundred feet long. To the rear was a rude fireplace, the smoke drifting through some wide cracks overhead. A small fire was burning, and he kicked a fresh log on the blaze, which soon gave him more light. Then he sat down again.
As he rested, his eyes roamed around the rocky apartment, and presently fell upon a sheet of paper lying under the table. Curious to know what it might contain, he bent down backwards, and by an effort secured the paper and placed it upon the table. Then, by the flickering flames, he tried to make out the writing it contained.
The letter—for such the sheet proved to be—was a communication which had been sent to Matt Gilroy by a writer who signed himself Mose. It ran as follows:
"The plan will work perfectly, and all we must do is to wait until the money is at the fort. I am sure the soldiers will leave as requested, and the defense will amount to little or nothing. Will see to it that Colonel Fairfield is drugged, and will treat Captain Moore and the other officers the same way, if I can get the chance."