The next day they had an experience of the Indian mode of hunting, which is thus described: "The chief game of the Shoshonees is the antelope, which, when pursued, retreats to the open plains, where the horses have full room for the chase. But such is its extraordinary fleetness and wind, that a single horse has no chance of outrunning it or tiring it down, and the hunters are therefore obliged to resort to stratagem. About twenty Indians, mounted on fine horses and armed with bows and arrows, left camp. In a short time they descried a herd of antelopes; they immediately separated into little squads of two or three, and formed a scattered circle round the herd for five or six miles, keeping at a wary distance, so as not to alarm them till they were perfectly enclosed, and usually selecting some commanding eminence as a stand. Having gained their positions, a small party rode toward the herd, and with wonderful dexterity the huntsman preserved his seat, and the horse his footing, as he ran at full speed over the hills and down the steep ravines and along the borders of the precipices. They were soon outstripped by the antelopes, which, on gaining the other extremity of the circle, were driven back and pursued by the fresh hunters. They turned and flew, rather than ran, in another direction; but there, too, they found new enemies. In this way they were alternately pursued backward and forward, till at length, notwithstanding the skill of the hunters, they all escaped; and the party, after running for two hours, returned without having caught anything, and their horses foaming with sweat. This chase, the greater part of which was seen from the camp, formed a beautiful scene; but to the hunters is exceedingly laborious, and so unproductive, even when they are able to worry the animal down and shoot him, that forty or fifty hunters will sometimes be engaged for half a day without obtaining more than two or three antelopes." Captain Lewis succeeded with great difficulty in persuading the band of Shoshones to pass over the divide in order to assist in bringing his impedimenta across. The presence of a Shoshone woman, the monstrosity of a man entirely black, favorable barter for their horses were urged; in short he played on their avarice, curiosity, tribal pride, and by questioning their courage succeeded in stimulating them to make the journey. It transpired that Cameahwait, the Shoshone chief, was the brother of Sacajawea, and one of the Shoshone women, now in camp, had been for some time prisoner with her in the hands of the Minnetarees. The meeting of these Indians after long separation disclosed such emotion as proved their tender feelings and genuine interest in each other. [Illustration: Castle Rock, on the Columbia River.]