We whipped our horses to a gallop. Again thin smoke lines arose from the prairie and simultaneously the wigwam began to vanish. I had almost concluded the tepee was one of those delusive mirages which lead prairie riders on fools' errands, when I descried figures mounting ponies where the peaked camp had stood. At this we lashed our horses to faster pace. The Sioux galloped off and more smoke lines were rising.
"What do those mean, Little Fellow?" I asked; for there was smoke in a dozen places ahead.
"The prairie's on fire, Monsieur! The Sioux have put burnt stick in dry grass! The wind—it blow—it come hard—fast—fast this way!" and all four Indians reined up their horses as if they would turn.
"Coward Indians," I cried. "Go on! Who's put off the trail by the fire of a fool Sioux? Get through the fire before it grows big, or it will catch you all and burn you to a crisp."
The gathering smoke was obscuring the fugitives and my Indians still hung back. Where the Indian refuses to be coerced, he may be won by reward, or spurred by praise of bravery.
"Ten horses to the brave who catches a Sioux!" I shouted. "Come on, Indians! Who follows? Is the Indian less brave than the pale face?" and we all dashed forward, spurring our hard-ridden horses without mercy. Each Indian gave his horse the bit. Beating them over the head, they craned flat over the horses' necks to lessen resistance to the air. A boisterous wind was fanning the burning grass to a great tide of fire that rolled forward in forked tongues; but beyond the flames were figures of receding riders; and we pressed on. Cinders rained on us like liquid fire, scorching and maddening our horses; but we never paused. The billowy clouds of smoke that rolled to meet us were blinding, and the very atmosphere, livid and quivering with heat, seemed to become a fiery fluid that enveloped and tortured us. Involuntarily, as we drew nearer and nearer the angry fire-tide, my hand was across my mouth to shut out the hot burning air; but a man must breathe, and the next intake of breath blistered one's chest like live coals on raw flesh. Little wonder our poor beasts uttered that pitiful scream against pain, which is the horse's one protest of suffering. Presently, they became wildly unmanageable; and when we dismounted to blindfold them and muffle their heads in our jackets, they crowded and trembled against us in a frenzy of terror. Then we tied strips torn from our clothing across our own mouths and, remounting, beat the frantic creatures forward. I have often marveled at the courage of those four Indians. For me, there was incentive enough to dare everything to the death. For them, what motive but to vindicate their bravery? But even bravery in its perfection has the limitation of physical endurance; and we had now reached the limit of what we could endure and live. The fire wave was crackling and licking up everything within a few paces of us. Live brands fell thick as a rain of fire. The flames were not crawling in the insidious line of the prairie fire when there is no wind, but the very heat of the air seemed to generate a hurricane and the red wave came forward in leaps and bounds, reaching out cloven fangs that hissed at us like an army of serpents. I remember wondering in a half delirium whether parts of Dante's hell could be worse. With the instinctive cry to heaven for help, of human-kind world over, I looked above; but there was only a great pitchy dome with glowing clouds rolling and heaving and tossing and blackening the firmament. Then I knew we must choose one of three things, a long detour round the fire-wave, one dash through the flames—or death. I shouted to the men to save themselves; but Burnt Earth and Ringing Thunder had already gone off to skirt the near end of the fire-line. Little Fellow and La Robe Noire stuck staunchly by me. We all three paused, facing death; and the Indians' horses trembled close to my broncho till I felt the burn of hot stirrups against both ankles. Our buckskin was smoking in a dozen places. There was a lull of the wind, and I said to myself, "The calm before the end; the next hurricane burst and those red demon claws will have us." But in the momentary lull, a place appeared through the trough of smoke billows, where the grass was green and the fire-barrier breached. With a shout and heads down, we dashed towards this and vaulted across the flaming wall, our horses snorting and screaming with pain as we landed on the smoking turf of the other side. I gulped a great breath of the fresh air into my suffocating lungs, tore the buckskin covering from my broncho's head and we raced on in a swirl of smoke, always following the dust which revealed the tracks of the retreating Sioux. There was a whiff of singed hair, as if one of the horses had been burnt, and Little Fellow gave a shout. Looking back I saw his horse sinking on the blackened patch; but La Robe Noire and I rode on. The fugitives were ascending rising ground to the south. They were beating their horses in a rage of cruelty; but we gained at every pace. I counted twenty riders. A woman seemed to be strapped to one horse. Was this Miriam? We were on moist grass and I urged La Robe Noire to ride faster and drove spurs in my own beast, though I felt him weakening under me. The Sioux had now reached the crest of the hill. Our horses were nigh done, and to jade the fagged creatures up rising ground was useless.
When we finally reached the height, the Sioux were far down in the valley. It was utterly hopeless to try to overtake them. Ah! It is easy to face death and to struggle and to fight and to triumph! But the hardest of all hard things is to surrender, to yield to the inevitable, to turn back just when the goal looms through obscurity!
I still had Diable in my power. We headed about and crawled slowly back by unburnt land towards the buffalo hunters.
Little Fellow, we overtook limping homeward afoot. Burnt Earth and Ringing Thunder awaited us near the ravine. The carts were already out gathering hides, tallow, flesh and tongues. We made what poor speed we could among the buffalo carcasses to the spot where we had left Le Grand Diable. It was Little Fellow, who was hobbling ahead, and the Indian suddenly turned with such a cry of baffled rage, I knew it boded misfortune. Running forward, I could hardly believe my eyes. Fools that we were to leave the captive unguarded! The great buffalo lay unmolested; but there was no Le Grand Diable. A third time had he vanished as if in league with the powers of the air. Closer examination explained his disappearance. A wet, tattered moccasin, with the appearance of having been chewed, lay on the turf. He had evidently bitten through his gag, raised his arms to his mouth, eaten away the hare thongs, and so, without the help of the Sioux raiders, freed his hands, untied himself and escaped.
Dumfounded and baffled, I returned to the encampment and took counsel with Father Holland. We arranged to set out for the Mandanes on the Missouri. Diable's tribe had certainly gone south to Sioux territory. The Sioux and the Mandanes were friendly enough neighbors this year. Living with the Mandanes south of the Sioux country, we might keep track of the enemy without exposing ourselves to Sioux vengeance.