But on looking behind him, Bellerophon saw something that induced him first to draw the bridle and then to turn Pegasus about. He made a sign, which the winged horse understood, and sunk slowly through the air until his hoofs were scarcely more than a man's height above the rocky bottom of the valley. In front, as far off as you could throw a stone, was the cavern's mouth with the three smoke-wreaths oozing out of it. And what else did Bellerophon behold there? There seemed to be a heap of strange and terrible creatures curled up within the cavern. Their bodies lay so close together that Bellerophon could not distinguish them apart; but, judging by their heads, one of these creatures was a huge snake, the second a fierce lion, and the third an ugly goat. The lion and the goat were asleep; the snake was broad awake, and kept staring around him with a great pair of fiery eyes. But--and this was the most wonderful part of the matter--the three spires of smoke evidently issued from the nostrils of these three heads! So strange was the spectacle, that, though Bellerophon had been all along expecting it, the truth did not immediately occur to him that here was the terrible three-headed Chimera. He had found out the Chimera's cavern. The snake, the lion, and the goat, as he supposed them to be, were not three separate creatures, but one monster! The wicked, hateful thing! Slumbering as two thirds of it were, it still held in its abominable claws the remnant of an unfortunate lamb--or possibly (but I hate to think so) it was a dear little boy--which its three mouths had been gnawing before two of them fell asleep! All at once Bellerophon started as from a dream, and knew it to be the Chimera. Pegasus seemed to know it at the same instant, and sent forth a neigh that sounded like the call of a trumpet to battle. At this sound the three heads reared themselves erect and belched out great flashes of flame. Before Bellerophon had time to consider what to do next, the monster flung itself out of the cavern and sprung straight toward him, with its immense claws extended and its snaky tail twisting itself venomously behind. If Pegasus had not been as nimble as a bird, both he and his rider would have been overthrown by the Chimera's headlong rush, and thus the battle have been ended before it was well begun. But the winged horse was not to be caught so. In the twinkling of an eye he was up aloft, halfway to the clouds, snorting with anger. He shuddered, too, not with affright, but with utter disgust at the loathsomeness of this poisonous thing with three heads. [Illustration: PEGASUS DARTED DOWN ASLANT TOWARD THE CHIMERA'S THREE- FOLD HEAD.]