Here they discovered another tree, which was so large that their thoughts were diverted even from the extraordinary cataract for a short time. Unlike the previous one, this monarch of the woods lay prostrate on the ground, but its diameter near the root was so great that they could not see over it though seated on horseback. It measured a hundred and twenty feet in circumference, and, when standing, must have been little, if at all, short of five hundred feet in height.

Surrounded as they were by such noble and stupendous works of God, the travellers could not find words to express their feelings. Deep emotion has no articulate language. The heaving breast and the glowing eye alone indicate the fervour of the thoughts within. For a long time they sat gazing round them in silent wonder and admiration, then they dismounted to measure the great tree, and after that Ned sat down to sketch the fall, while his companion rode forward to select a spot for camping on.

Tom had not proceeded far when he came upon the track of wheels in the grass, a sight which surprised him much, for into that remote region he had supposed few travellers ventured, even on horseback. The depth and breadth of the tracks, too, surprised him not a little. They were much deeper and broader than those caused by any species of cart he had yet seen or heard of in the country, and the width apart was so great, that he began to suspect he must have mistaken a curious freak of nature for the tracks of a gigantic vehicle. Following the track for some distance, he came to a muddy spot, where the footprints of men and horses became distinctly visible. A little further on he passed the mouth of what appeared to be a cavern, and, being of an inquisitive disposition, he dismounted and tied his horse to a tree, intending to examine the entrance.

To enter a dark cave, in a wild, unknown region, with the din of a thundering cataract filling the ears, just after having discovered tracks of a mysterious nature in the neighbourhood, was so trying to Tom’s nervous system, that he half resolved to give it up; but the exploration of a cavern has a fascination to some dispositions which every one cannot understand. Tom said “Pshaw!” to himself in an undertone, and boldly stepping into the dark portals of the cave, he disappeared.

Meanwhile, Edward Sinton finished his sketch, and, supposing that Tom was waiting for him in advance, he mounted and galloped forward as fast as the nature of the ground would allow.

Soon he came to the tracks before mentioned, and shortly after to the muddy spot with the footprints. Here he drew rein, and dismounted to examine the marks more closely. Our hero was as much perplexed as his friend had been at the unusually broad tracks of the vehicle which had passed that way. Leading his horse by the bridle, he advanced slowly until he came to the spot where Tom’s horse stood fastened to a tree,—a sight which alarmed him greatly, for the place was not such as any one would have selected for an encampment, yet had any foul play befallen his friend, he knew well that the horse would not have been left quietly there.

Sorely puzzled, and filled with anxious fears, he examined the spot carefully, and at last came upon the entrance to the cavern, before which he paused, uncertain what to do. The shadows of evening were fast falling on the scene, and he experienced a feeling of dread as he gazed into the profound gloom. He was convinced that Tom must be there; but the silence, and the length of time he had been absent, led him to fear that some accident had befallen his friend.

“Ho! Tom!” he shouted, on entering, “are you there?” There was a rolling echo within, but no voice replied to the question.

Again Ned shouted at the full pitch of his lungs, and this time he thought he heard a faint reply. Hurrying forward eagerly, as quickly as he dared, he repeated his shout, but the declivity of the entrance became so great that he lost his footing and well-nigh fell headlong down a steep incline. He succeeded, however, in regaining his hold, and clambered back to the entrance as quickly as possible.

Here he caught up a pine-knot, struck a light and kindled it, and, with this torch held high above his head, advanced once more into the cavern.