I made no inquiry--no explanation was needed. The scene explained itself: for, at the moment of my emerging from the shadowy path, I had a tableau under my eyes, expressive as it was terrifying. The girl was upon the other side of the log, and near the point where she should have turned off from it; but, instead of advancing, I saw that she had come to a halt--her attitude expressing the wildest terror, as if some fearful object was before her! The jade, too, showed affright, by snorting loudly--his head raised high in the air, and his long ears pointing forward. The young girl was dragging mechanically on the bridle--as if to head him away from the spot. But this was impossible: another log, overlapping the first, formed an avenue, so narrow as to leave not the slightest chance of a horse being able to turn in it. Into this the animal had backed. There was no way of his getting from between the two trunks, but by going straight forward or backward. Forward he _dared not go_; and backward he was moving, as fast as the nature of the place would permit: now halting with his hips against one of the logs; then with a quick rush backing against the other, that, but for the support thus obtained, would have brought him upon his haunches! The retrograde movement on the part of the horse was evidently the result of terror, at the sight of some object in front. It was aided also by the half-mechanical action of the rider: who, pulling continuously on the bridle, and repeating her cries for help, appeared equally to suffer from affright! My astonishment was of short duration. Effect and cause came under my eye almost at the same instant. The latter I saw upon the log in hideous form--the form of a _couguar_! Slowly advancing along the dead-wood--not by bounds or paces, but with the stealthy tread of a cat--his long red body stretched out to its full extent--the beast more resembled a gigantic caterpillar than a quadruped. I could scarcely detect the movement of his limbs, so closely did the monster crawl; but his great tail, tapering three feet behind him, was seen vibrating from side to side, or at intervals moving with quick jerks--expressive of the enjoyment he was receiving in the contemplation of his prey--for such he deemed the helpless maiden before him. I saw not the couguar's face--hideous sight at such a moment--nor yet his eyes. Both were turned from me, and fixed steadfastly upon his intended victim. The fierce beast did not perceive my approach--perhaps a fortunate circumstance. Once or twice I saw him pause, as if crouching for a spring. Luckily, the old horse, making a fresh retrogression, caused the couguar again to advance along the log, in the same creeping attitude as before. With a glance, I had comprehended the situation: indeed, at the first glance I understood it perfectly. My delay in acting only arose from the necessity of preparing for action; and that did not take long.