to the thin thread that marked its course along the bottoms, Billy objected:
“Three hours, you say? Looks to me as though we could make it in one.”
“Less than that – if your mule should happen to slip and take it sideways. Let me see – allowing a thousand feet to a bump, about fourteen seconds ought to distribute you nicely among the bottom trees. But if you elect to follow me around the eight or nine miles of trail you cannot see, it will take the full three hours.”
Even while he was speaking the ruddy fires on the valley hills were suddenly extinguished, only the stark peaks on the other side lifted like yellow torches in the last blaze. One by one these also went out, and another hour found them journeying in gloom that was intensified rather than lightened by the section of moon which achieved a precarious balance on the rim above. In darkness and silence that was broken only by the scrape of hoofs and rattle of displaced stones they followed down and down and down, until Billy presently came under a singular hallucination. Repeatedly he put out his hand to repel the rock wall that seemed to be animated with a desire to crowd him off into the cañon, and because of this pardonable nervousness he endured a real trial that would have drawn a quick protest from Seyd – to wit, the senseless way in which the muleteers were driving their beasts on his heels. Twice he rapped a rough nose that tried to force its way in between him and the wall, and he breathed more easily when an easier grade permitted them to draw ahead on a gentle trot.
Accustomed, on his part, to leave all to his beast, Seyd rode with a loose bridle, lost in thought, his mind busy with mining plans. And thus it was that when Paz suddenly stopped, snorting, at the end of a trot which had carried them well ahead of the train around a rock wall, he almost went over her head. Recovering quickly, he was about to drive in the spurs; and a man of slower intuitions would surely have done it. With him, however, action invariably preceded thought, from instincts almost as acute as those which had brought the mule to a stop. Dismounting, he stepped ahead. Then, to the horror of Billy, who heard the burros slipping and sliding as they came round the wall on a trot, his voice came back.
“Hold on, there! A slide has carried away the trail!”
CHAPTER IV
Although he had always doubted the phenomenon, Billy’s hair stood on end, and when, in the face of Seyd’s shouts in Spanish to stop, the burros still came on he felt his cap move.
“Billy!” Seyd’s command rang out sharply. “Dismount and lie down. It’s our only chance.”
In that tense moment, however, Mr. William Thornton, assayer and metallurgist, had done an amount of thinking that would have required many minutes of his leisure. He was already on the ground, and as he lay there, arms wrapped over the back of his head as a protection against the sharp hoofs that would presently grind his face in the dust, uncomfortable expectation gave birth to inspiration. As Seyd also braced himself for the shock there came the scratch of a match, and Billy’s red head flashed out in relief against the belly of the leading burro as it upreared in fright at the blaze. In the same moment a second blunt head shoved itself like a wedge between the first burro and the wall, and as the gray body shot off sideways into the chasm Seyd saw first the others sliding in a desperate effort to stop, and behind them the mule whips swinging to drive them on. As under a flashlight it all flamed out and vanished.
In the short time required for Billy to strike a second match Seyd’s mind registered an astonishing number of impressions. A hoarse yell, a sudden scurry of departing hoofs, and Billy’s hysterical profanity formed merely the background of a sequence that flashed back over the events of the day. The scraps of muleteers’ talk the night before, the runaway, and other minor delays, the drivers’ refusal to camp on the rim, their insistence that he and Billy should take the lead, all fused in a belief which he expressed as the second match flaring up showed the trail empty of life between themselves and the next turn.
“It’s a frame-up! They knew of the slide. They had it fixed to run us off in the dark.”
“But where are they now?” Billy gazed down into the dark void. “Surely they didn’t all go over.”
“No such luck. The burros bolted back on them, and they just legged it out of the way. Listen!” A scurry of hoofs sounded on the level above. “There they go, and it’s up to us to keep them going. Back your mule up and turn. If we don’t give them the run of their lives we’ll deserve all they tried to give us.”
And run they did. Overtaking the burros just as they began to slow down, Seyd slipped ahead, struck a match close to the tail of the last, and so precipitated the cavalcade once more upon the sweating drivers. Whereafter, they took turns and kept the frightened beasts on a breathless trot up the heartbreaking grades. Under the flare of a match they sometimes caught a glimpse of the muleteers shuffling ahead on a tired run. Occasionally their sobbing breath rose over the scrape of the hoofs. But first one riding, then the other, they hustled them on without mercy till the train opened at last upon the plateau above.
“Now, then! Run them down!” Seyd shouted; but as he swung his mule out to go by the burros he almost ran into a horseman who had just reined his beast to one side of the trail.
“It is you, señor?”
Here on the top the light of the stars helped out the weak moon, and, though the man’s face was in shadow, Seyd recognized the upright, graceful figure. “Come to see if the job is done.” He thought it while answering aloud, “As you perceive, señor.”
“Not until long after you left did I hear of the break in the trail, and I have ridden hard – used up one horse and half killed this poor beast. But no matter so long as I am in time.”
“Hypocrite!” Seyd thought again. A little nonplussed, however, by the tone of assurance, he gave his thought lighter expression. “You would not have been if these fellows had had their way.”
“Caramba, señor! Why?”
If his surprise were assumed it was certainly remarkably well done. While Seyd was telling of their narrow escape he sat his horse, silent but attentive. With the last word he burst into a fury of action. Uttering a Spanish oath, he drove in the spurs and rode his rearing horse straight at the mule-drivers, who had turned on Billy with drawn knives, lashing them with his heavy quirt over face, head, shoulders. Five minutes later his whip was still cutting the air with a shrill whistle, and, richly as the fellows deserved it, Seyd and Billy shuddered at the pitiless flogging. Strangest to them of all, the men endured this without attempt at flight or resistance. They stood, their arms shielding their faces, whimpering like beaten hounds.
It was their abject submissiveness that injected a touch of doubt into Billy’s comment. “It looks, after all, as though they had done it themselves.”
Seyd shrugged. “Perhaps; in any case we have no proof.”
“Now, blind swine, that will serve for a while!” Sebastien’s cold voice broke in. “Off with you and build a fire, then stake out the mules.” Seyd’s suspicion gave a little more before his quiet assurance. “You will have to stay here till morning, señors, for it is many miles along the rim to the other trail. Unfortunately, it was your supply mule that went into the cañon, so you must needs go hungry. However, we have a proverb, ‘A warm fire helps the empty belly,’ and to-morrow you will be able to recover your goods.”
Neither did his expression, as presently revealed by the fire, offer evidence for doubt. As he stood looking down at the blaze Seyd was vividly reminded of the Aztec god, for its cold stone face was not more inscrutable than this quiet brown mask. Its inscrutability provoked him to ask a sudden question.
“Did I not see you at
