expanded, and presenting apparently solid forms, where, in fact, unsubstantially reigns.

"I am going for him," proceeded Cherokee Bill; "after all, it's no odds—we are 'to home!'" with a smile at his own imitation of the Yankee twang.

Wrapping his gun in his buffalo robes, taken off his pony, the half-breed slid down the declivity at the side of the "road," so to flatter it, and scrambling along an icy torrent of lovely blue water, suddenly sprang in under the cascade from an arching rock and disappeared.

Ridge did not even glance after him; besides, he had arrived, indeed. He suddenly took the bell mare by the bridle, and swerved her into an apparently impenetrable thicket—a "wind-slash," where the maze of deadwood was increased by the prostration of many tough evergreens, blown down by an irresistible tornado. But there had been traced here a kind of way, through which the pack animals insinuated themselves with the sureness of a cat, brushing off nothing of their loads. As for the two horses, they were more familiar with the strange path, and threaded its sinuosities like dogs tunnelling under the walls of a meat smokehouse. It is probable they scented their stable, and knew rest and food would shortly reward them for terrible toil and tribulation. Having pierced the tunnel of vegetation, there was one of stone, still more curious.

It was an almost regular tube, in black lava stone, four feet wide, seven or eight in height, smooth as glass mostly. Invisible fissures, however, must have supplied sweet air, for it was not hard breathing in all the extent, nearer three quarters of a mile than a half on the straight. No human hand had fashioned it; one must presume that, in the days when Vulcan swayed over Neptune on the earth, a torrent of lava was rushing down the steeps, when, suddenly, an immense snowfall smothered the fiery river and chilled it into a casing of stone around a still molten interior. That inner flow had continued, and left the tubular crust intact.

The ground was a fine sand, heavy with iron, so that it did not rise far. At the end of this channel a star suddenly gleamed, welcome in the complete darkness, into which, assuredly, the bravest of men would have hesitated to follow a foe. It was the outer air again, filling a basin, rock-engirt to a great height. In this lonely spot there was not a scrap of moss, not one blade of grass, and no shrub, however hardy. The calcined "blossom rock" wore a yellow hue, streaked with red and black; but here and there rose separate boulders of quartz, disintegrated 

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