‘The chief game of the Shoshonees,’ say Lewis and Clarke, ‘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 possible 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, armed with bows and arrows, left the camp; in a short time they descried a herd of ten antelopes; they immediately separated into 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 inclosed, and usually selecting some commanding eminence as a stand. Having gained their positions, a small party rode towards 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 backwards and forwards, till at length, notwithstanding the skill of the hunters, (who were merely armed with bows and arrows) they all escaped; and the party, after running for two hours, returned without having caught any thing, 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 more than half a day, without obtaining more than two or three antelopes.’ _Rocky Mountain Goat._――This species is nearly the size of a common sheep, and has a shaggy appearance. Its hoofs and horns are black; the latter project but little, and are slightly curved. Great numbers of this goat are found about the head-waters of the north fork of Columbia river, where they are much hunted by the natives, and form an abundant though somewhat unsavory article of food. They are seldom seen far from the mountains, and are more numerous on their western than on their eastern slopes. The skin is thick and spongy, and is used for moccasins. The fleece is said to be as fine as that of which the celebrated cashmere shawls are manufactured. Illustration: Rocky Mountain Goat.