"That's so. Every thing goes against us. Hello! hello there! They don't hear me, they're so far ahead. You run on, Elizabeth, and holler as loud as you can. It couldn't be worse than to happen just now," he continued, in a complaining tone, as he went to work to unstrap the extra pair of axletrees which each wagon carried in case of just such accidents.

"It'll put us back so we won't get to camp before midnight. Blast it, it's just my luck."

In the mean time Elizabeth ran on to attract the attention of the party and obtain help in repairing the damage. She was fleeter of foot than the lumbering oxen, and the train was not more than a quarter of a mile in advance. She expected every moment when some one, chancing to look back, would comprehend the state of affairs and stop.

Suddenly she discovered that the train was thrown into confusion. At first she could perceive no reason, but a sound as of rumbling thunder drew her attention toward the south. A vast herd of bison had come into view, rushing up from a valley which had concealed them, and pouring down impetuously directly across the track of the train. They had encountered many of these herds during the last few days, had passed around and even close beside them; but this vast army had been frightened by some real or suspected danger, and the electric thrill of terror which flashed through their palpitating breasts made them blind to the obstacles in front of them. On they came by thousands, darkening the plain, shaking the earth, threatening to annihilate cattle, goods and men. To attempt to oppose their resistless numbers would have been like flinging feathers in the face of a whirlwind. Forward they swept, near and nearer, and for a few moments it seemed as if all were lost; the men did the only thing they could do to save themselves—they fired their rifles as rapidly as possible in the face of the enemy. The flash of fire-arms, and perhaps some of the shots taking effect, saved the train from destruction; the immense horde swerved slightly to one side, and swept on more madly then ever, just grazing the last one of the teams, bearing down the wagon and trampling the cattle underfoot, but only stunning the driver, who was saved by the wagon falling over him.

And now the path of the bison was toward the unprotected girl, standing motionless with fright, her eyes fixed upon the mighty sea of brutal life rushing down upon her, terrible and tumultuous. It was as well for her to remain riveted by terror as to flee, for flight could be of no avail—she could never outstrip that long wall darkening down upon her. She felt, through all the cruel pangs of anticipation, their hoofs trampling her young life into nothingness.

Then there came flying along in front of that rushing host a horse and rider. While the horseman had to sweep almost the whole line of the bison, they were galloping directly forward toward the girl, and it was a question of fearful interest to the lookers on as to which would reach her first—or whether he and his animal, as well as the hapless maiden, would not be overwhelmed.

As for her, she did not see him, or if she did, terror had so paralyzed her that she did not distinguish him from the multitude. Their hot breath already blasted her, when she felt herself caught up, and unable any longer to realize the truth, she gave a wild shriek and became lost to further consciousness of her situation.

When they saw Nat Wolfe stoop and swing the girl lightly up across the neck of his horse, the gazing emigrants in the distance gave an irrepressible shout, and again became breathless and silent, watching the further progress of events; for the herd had gained on the steed during the momentary halt, and being doubly freighted, the noble beast could not now run with his usual swiftness. A passion of terror had taken possession of him also, as he felt himself encumbered, and the bisons pressing upon him. He reared and whirled about madly, threatening to run upon destruction, instead of away from it. His owner bent and seemed to utter a word in his ear at which he sprung forward, as if carrying no weight at all straight as an arrow from the shaft, quite in advance of the bellowing monsters throwing up the sand in clouds along their way.

Suddenly horse and riders went down into a ravine and were lost to sight, and the next moment the whole excited herd poured over like a torrent, and were seen thundering down the empty river-bed and speeding over the valley. As soon as the bisons had passed, the men started to ascertain the fate of the two human beings probably crushed to death in the river-bed. As they reached the edge of the ravine and looked eagerly over, Nat Wolfe crawled out from the shelter of the shelving ledge on which they stood, shaking the dirt and pebbles from his hair and garments.

"Hello," cried he, cheerfully. "All right. Hold on, till I hand up the girl," and he lifted her, just struggling back to consciousness, up to the ready arms held out for her; then, finding a rift which afforded him a foothold, he swung himself lightly after her.