We were one hundred and fifty miles from Urga and were still going slowly south, when we had our next real hunting camp. Great bands of antelope were working northward from the Gobi Desert to the better grazing on the grass-covered Turin plain. We encountered the main herd one evening about six o'clock, and it was a sight which made us gasp for breath. We were shifting camp, and my wife and I were trotting along parallel to the carts which moved slowly over the trail a mile away. We had had a delightful, as well as a profitable, day. Yvette had been busy with her camera, while I picked up an antelope, a bustard, three hares, and half a dozen marmots. We were loafing in our saddles, when suddenly we caught sight of the cook standing on his cart frantically signaling us to come.

In ten seconds our ponies were flying toward the caravan, while we mentally reviewed every accident which possibly could have happened to the boys. Lü met us twenty yards from the trail, trembling with excitement and totally incoherent. He could only point to the south and stammer, "Too many antelope. Over there. Too many, too many."

I slipped off Kublai Khan's back and put up the glasses. Certainly there were animals, but I thought they must be sheep or ponies. Hundreds were in sight, feeding in one vast herd and in many smaller groups. Then I remembered that the nearest well was twenty miles away; therefore they could not be horses. I looked again and knew they must be antelope—not in hundreds, but in thousands.

Mr. Larsen in Urga had told us of herds like this, but we had never hoped to see one. Yet there before us, as far as the eye could reach, was a yellow mass of moving forms. In a moment Yvette and I had left the carts. There was no possibility of concealment, and our only chance was to run the herd. When we were perhaps half a mile away the nearest animals threw up their heads and began to stamp and run about, only to stop again and stare at us. We kept on very slowly, edging nearer every moment. Suddenly they decided that we were really dangerous, and the herd strung out like a regiment of yellow-coated soldiers.

Kublai Khan had seen the antelope almost as soon as we left the carts, and although he had already traveled forty miles that day, was nervously champing the bit with head up and ears erect. When at last I gave him the word, he gathered himself for one terrific spring; down went his head and he dashed forward with every ounce of strength behind his flying legs. His run was the long, smooth stride of a thoroughbred, and it sent the blood surging through my veins in a wild thrill of exhilaration. Once only I glanced back at Yvette. She was almost at my side. Her hair had loosened and was flying back like a veil behind her head. Tense with excitement, eyes shining, she was heedless of everything save those skimming yellow forms before us. It was useless to look for holes; ere I had seen one we were over or around it. With head low down and muzzle out, my pony needed not the slightest touch to guide him. He knew where we were going and the part he had to play.

More than a thousand antelope were running diagonally across our course. It was a sight to stir the gods; a thing to give one's life to see. But when we were almost near enough to shoot, the herd suddenly swerved heading directly away from us. In an instant we were enveloped in a whirling cloud of dust through which the flying animals were dimly visible like phantom figures. Kublai Khan was choked, and his hot breath rasped sharply through his nostrils, but he plunged on and on into that yellow cloud. Standing in my stirrups, I fired six times at the wraithlike forms ahead as fast as I could work the lever of my rifle. Of course, it was useless, but just the same I had to shoot.

In about a mile the great herd slowed down and stopped. We could see hundreds of animals on every side, in groups of fifty or one hundred. Probably two thousand antelope were in sight at once and many more were beyond the sky rim to the west. We gave the ponies ten minutes' rest, and had another run as unsuccessful as the first. Then a third and fourth. The antelope, for some strange reason, would not cross our path, but always turned straight away before we were near enough to shoot.

After an hour we returned to the carts—for Yvette was exhausted from excitement—and the lama took her place. We left the great herd and turned southward, parallel to the road. A mile away we found more antelope; at least a thousand were scattered about feeding quietly like those we had driven north. It seemed as though all the gazelles in Mongolia had concentrated on those few miles of plain.

The ponies were so exhausted that we decided to try a drive and leave the main herd in peace. When we were concealed from view in the bottom of a land swell I slipped off and hobbled Kublai Khan. The poor fellow was so tired he could only stand with drooping head, even though there was rich grass beneath his feet. I sent the lama in a long circle to get behind the herd, while I crawled a few hundred yards away and snuggled out of sight into an old wolf den.

I watched the antelope for fifteen minutes through my binoculars. They were feeding in a vast semicircle, entirely unconscious of my presence. Suddenly every head went up; they stared fixedly toward the west for a moment, and were off like the wind. About five hundred drew together in a compact mass, but a dozen smaller herds scattered wildly, running in every direction except toward me. They had seen the lama before he had succeeded in completely encircling them, and the drive was ruined.