“Ha! ha! ha! ha!!!”

Again the fearful hollow laugh sounded above them, with its peculiarly ghastly mockery, and the echoes in the cave repeated the sound again and again, till it seemed as if a legion of demons was loose.

But Butler was not to be longer daunted by sounds, however fearful. Up the steep path he rushed, rifle in hand, toward the white figure in the gloomy portal, and his men after a little hesitation followed him.

Hardly had they reached the top, than a bright glare of crimson fire illuminated the rocky cavern, making every thing bright as day, and turning the whole vast chamber into a palace of jewels.

The glare came from a column of red flame that shot up in the midst of the dark archway, where the great white stalactite shone out with startling vividness.

Not a living creature was visible before them, but the column of flame made it certain that some one must be near by to have lighted it. Butler rushed forward, calling to his men to follow, and then suddenly recoiled, as three fiery figures sprung out from the wall and rushed forward waving burning swords that shone with blue flames.

The effect was instantaneous on all but Butler. The Indians yelled with terror and plunged down the path, running headlong for the opening by the merciful light of the flame. The dragoons fired a hasty random volley with their rifles and fled after them, and the next moment out went the light and the three fiery figures went sailing through the air over the black lake like birds of hell, uttering the same fearful screeches that had driven the savages to flight.

In a moment more Butler was alone on the platform, and one of the fiery figures, waving its wings, swooped down on him, and striking him with unmistakably solid feet, sent him headlong into the black lake with a splash.

Then with a final peal of demoniac laughter all three of the apparitions circled back to the rock and disappeared, leaving Indians and dragoons to find their way out as they could.

CHAPTER XVII.