The youth was awakened to consciousness.  His mind was one of that cast with which to know, to think, and to act, are simultaneous.  Of ready decision, he was never at a loss, and seldom surprised into even momentary incertitude.  With the first intimation of the attack upon himself, his pistol had been drawn, and while the prostrate ruffian was endeavoring to rise, and before he had well regained his feet, the unerring ball was driven through his head, and without word or effort he fell back among his fellows, the blood gushing from his mouth and nostrils in unrestrained torrents.

The whole transaction was the work of a single instant; and before the squatters, who came with their slain leader, could sufficiently recover from the panic produced by the event to revenge his death, the youth was beyond their reach; and the assailing party of the guard, in front of the post, apprized of the sally by the discharge of the pistol, made fearful work among them by a general fire, while obliquing to the entrance of the pass just in time to behold the catastrophe, now somewhat precipitated by the event which had occurred below.  Ralph, greatly excited, regained his original stand of survey, and with feelings of unrepressed horror beheld the catastrophe.  The Georgian had almost reached the top of the hill—­another turn of the road gave him a glimpse of the table upon which rested the hanging and disjointed cliff of which we have spoken, when a voice was heard—­a single voice—­in inquiry:—­

“All ready?”

The reply was immediate—­

“Ay, ay; now prize away, boys, and let go.”

The advancing troop looked up, and were permitted a momentary glance of the terrible fate which awaited them before it fell.  That moment was enough for horror.  A general cry burst from the lips of those in front, the only notice which those in the rear ever received of the danger before it was upon them.  An effort, half paralyzed by the awful emotion which came over them, was made to avoid the down-coming ruin; but with only partial success; for, in an instant after, the ponderous mass, which hung for a moment like a cloud above them, upheaved from its bed of ages, and now freed from all stays, with a sudden, hurricane-like and whirling impetus, making the solid rock tremble over which it rushed, came thundering down, swinging over one half of the narrow trace, bounding from one side to the other along the gorge, and with the headlong fury of a cataract sweeping everything from before its path until it reached the dead level of the plain below.  The involuntary shriek from those who beheld the mass, when, for an instant impending above them, it seemed to hesitate in its progress down, was more full of human terror than any utterance which followed the event.  With the exception of a groan, wrung forth here and there from the half-crushed victim, in nature’s agony, the deep silence which ensued was painful and appalling; and even when the dust had dissipated, and the eye was enabled to take in the entire amount of the evil deed, the prospect failed in impressing the senses of the survivors with so distinct a sentiment of horror, as when the doubt and death, suspended in air, were yet only threatened.