In the brilliant atmosphere an antelope at four hundred yards appears as large as it would at one hundred in most other parts of the world; and on the flat plains, where there is not a bush or a shrub to obscure the view, a tiny stone stands out like a golf ball on the putting green. Because of these conditions there is strong temptation to shoot at impossible ranges and to keep on shooting when the game is beyond anything except a lucky chance. Therefore, if any of you go to Mongolia to hunt antelope take plenty of ammunition, and when you return you will never tell how many cartridges you used. Our antelope were tied on the running board of the car and we went back to the road where Lucander was waiting. Half the herd had crossed in front of him, but he had failed to bring down an animal.

When the excitement was over I began to understand the significance of what we had seen. It was slowly borne in upon me that our car had been going, by the speedometer, at forty miles an hour and that the antelope were actually beating us. It was an amazing discovery, for I had never dreamed that any living animal could run so fast. It was a discovery, too, which would have important results, for Professor Henry Fairfield Osborn, president of the American Museum of Natural History, even then was carrying on investigations as to the relation of speed to limb structure in various groups of animals. I determined, with Mr. Coltman's help, to get some real facts in the case—data upon which we could rely.

There was an opportunity only to begin the study on the first trip, but we carried it further the following year. Time after time, as we tore madly after antelope, singly or in herds, I kept my eyes upon the speedometer, and I feel confident that our observations can be relied upon. We demonstrated beyond a doubt that the Mongolian antelope can reach a speed of from fifty-five to sixty miles an hour. This is probably the maximum which is attained only in the initial sprint and after a very short distance the animals must slow down to about forty miles; a short distance more and they drop to twenty-five or thirty miles, and at this pace they seem able to continue almost indefinitely. They never ran faster than was necessary to keep well away from us. As we opened the throttle of the car they, too, increased their speed. It was only when we began to shoot and they became thoroughly frightened that they showed what they could do.

I remember especially one fine buck which gave us an exhibition of really high-class running. He started almost opposite to us when we were on a stretch of splendid road and jogged comfortably along at thirty-five miles an hour. Our car was running at the same speed, but he decided to cross in front and pressed his accelerator a little. Coltman also touched ours, and the motor jumped to forty miles. The antelope seemed very much surprised and gave his accelerator another push. Coltman did likewise, and the speedometer registered forty-five miles. That was about enough for us, and we held our speed. The animal drew ahead on a long curve swinging across in front of the car. He had beaten us by a hundred yards!

But we had a surprise in store for him, for Coltman suddenly shut off the gas and threw on both brakes. Before the motor had fully stopped we opened fire. The first two bullets struck just behind the antelope and a third kicked the dust between his legs. The shock turned him half over, but he righted himself and ran to his very limit. The bullets spattering all about kept him at it for six hundred yards. He put up a desert hare on the way, but that hare didn't have a chance with the antelope. It reminded me of the story of the negro who had seen a ghost. He ran until he dropped beside the road, but the ghost was right beside him. "Well," said the ghost, "that was some race we had." "Yes," answered the negro, "but it ain't nothin' to what we're goin' to have soon's ever I git my breath. And then," said the negro, "we ran agin. And I come to a rabbit leggin' it up the road, and I said, 'Git out of the way, rabbit, and let some one run what can run!'" The last we saw of the antelope was a cloud of yellow dust disappearing over a low rise.

The excitement of the chase had been an excellent preparation for the hard work which awaited us not far ahead. The going had been getting heavier with every mile, and at last we reached a long stretch of sandy road which the motors could not pull through. With every one except the driver out of the car, and the engine racing, we pushed and lifted, gaining a few feet each time, until the shifting sand was passed. It meant two hours of violent strain, and we were well-nigh exhausted; a few miles farther, however, it had all to be done again. Where the ground was hard, there was such a chaos of ruts and holes that our arms were almost wrenched from their sockets by the twisting wheels.

PLATE II

AT THE END OF THE LONG TRAIL FROM OUTER MONGOLIA