"We have examined three sides of the field, and found that the cattle could not have come from either of those directions. Is not that so?"
"It is absolutely certain," said the others.
"Therefore," continued Lieutenant Coleman, "they must have come by the fourth side."
This conclusion was admitted to be logical; but it provoked a storm of argument, in the course of which the soldiers got wild-eyed and red in the face. In the end, however, they consented to trim out the bushes which formed a thicket along the base of the ledge. It seemed to Lieutenant Coleman that they must find some passage here, and, sure enough, not far from the middle of this natural wall they came upon a low-browed opening, which presently narrowed down to a space not much more than five feet square. The farther end of this tunnel was closed by a pile of loose earth, which was spread out at the base, and had every appearance of having been thrown in from the other side of the ledge. The rusty shovel was brought from the fireplace of the house, and after a few minutes of vigorous digging, a ray of light broke through the roots and grass near the roof of the hole. The soldiers gave a wild cheer, and rushed out into the fresh air to cool off.
"That settles it," said Lieutenant Coleman. "Hezekiah Wallstow was the old man of the mountain, and after Josiah Woodring buried him he filled up this passage. The treasure he was searching for was the very cask of gold we dug out of the fake grave—thanks to the sacrilegious behavior of the bear."
"But how about the cattle?" said Bromley, still skeptical.
"Easy enough," said Coleman, triumphantly. "They brought two young calves up the ladders."
This hitherto unsuspected passage through the ledge made everything clear. It had evidently been wide open during all the years the old man had lived on the mountain. It might have been screened by bushes so that any chance visitors, like the hunters who came over the bridge, would be easily deceived, and not disposed to look farther than the ruined cabin and the non-committal gravestone.
It was not strange that the three soldiers had never suspected that there was an opening here through the rocks, for a four-pronged chestnut had taken firm root in the grassy bank which Josiah had thrown up, and the old man had been dead six years when they first arrived on the mountain. How soon after the burial the passageway had been closed, it was not so easy to determine, but numerous hollows which were afterward found near certain trees and rocks on the smaller plateau made it look as if Josiah had spent a good many moonlight nights in digging for the treasure before he gave it up altogether. According to the story of Andy, the guide, Josiah himself must have died soon after his strange patron, and most likely he closed the entrance to the passage in despair when he felt his last illness approaching. There was still much for the soldiers to learn about the motive of the hermit in burying his surplus gold. The comforts with which he had surrounded himself would indicate that he was no miser, and his devotion to the cause of the slave made it extremely probable that he had willed his treasure to some emancipation society, which had not succeeded in reclaiming it before the war, and which, for plenty of reasons, had not been able to secure it since.
After the soldiers had reopened the passage through the dividing cliff so that they could pass readily from one plateau to the other, they suspended further investigation and yielded to the luxury of reading, which had been denied them so long. The more they read of this peculiar literature from the library left by Hezekiah Wallstow, the more interested they became in the cause of the slave who, they believed, had been made free on paper by the impotent proclamation of Abraham Lincoln, only to have his fetters more firmly riveted than ever by the success of the Confederate arms.