The broad slab of rock started easily enough at their energetic effort. A seam appeared to widen—a crack was disclosed—there followed space sufficient to allow a hand to be inserted and then a dozen willing scouts helped with the lift. In a couple of minutes the big slab was thrown over with a crash, and below appeared a cavity that was evidently the work of men's hands.

Dark as Erebus was the interior, baffling the peering eyes of the scouts, until Mr. Newton, hanging a lantern on each point of a pickax, dangled it into the depths. A vault some four or five feet deep and running far back into the cave was disclosed. It was partly filled with an assortment almost as miscellaneous as the treasure left on the ledges by the Indian; a riding saddle, an old coat, several pieces of artillery, some tools which may have been accessory to the trade of burglary, and scattered among these things many articles of personal property which, were undoubtedly of great value.

But the thing upon which the eyes of the scouts rested with greatest interest was a metal box, probably secured from some bank, which rested conspicuously on the top of the plunder.

"Matt and Glen get first selection," said Mr. Newton. "It's their find, whatever it is."

"Well take the box," said the boys.

Although not of great size the box was rather heavy, but its handling was no task for two such athletes. To the great disappointment of all it was locked.

"Never mind," said Mr. Newton. "We will open it when we get to camp. Now the rest of you take each what you can carry. Bear in mind that the question of property rights in this discovery is not to be considered at present. That will come later. All we do now is to carry it to camp."

They made a queer procession as they came one by one through the small opening. Matt and Glen came first pushing their box ahead of them on the raft which had been used in bringing over their tools and lanterns. The scouts who followed in their wake found it no easy matter to keep their treasure clear of the water as they crossed the swift little stream.

"These robbers chose safe place for their plunder all right, all right," said Chick-chick to Apple, "but mighty inconvenient, it is."

"I don't see why they did it," Apple replied. "They ought to have rented a safety deposit box in some bank."