Fort Laramie is one of the posts established by the American Fur Company, who well-nigh monopolize the Indian trade of this whole region. Here their officials rule with an absolute sway; the arm of the United States has little force; for when we were there, the extreme outposts of her troops were about seven hundred miles to the eastward. The little fort is built of bricks dried in the sun, and externally is of an oblong form, with bastions of clay, in the form of ordinary blockhouses, at two of the corners. The walls are about fifteen feet high, and surmounted by a slender palisade. The roofs of the apartments within, which are built close against the walls, serve the purpose of a banquette. Within, the fort is divided by a partition; on one side is the square area surrounded by the storerooms, offices, and apartments of the inmates; on the other is the corral, a narrow place, encompassed by the high clay walls, where at night, or in presence of dangerous Indians, the horses and mules of the fort are crowded for safe-keeping. The main entrance has two gates, with an arched passage intervening. A little square window, quite high above the ground, opens laterally from an adjoining chamber into this passage; so that when the inner gate is closed and barred, a person without may still hold communication with those within through this narrow aperture. This obviates the necessity of admitting suspicious Indians, for purposes of trading, into the body of the fort; for when danger is apprehended, the inner gate is shut fast, and all traffic is carried on by means of the little window. This precaution, though highly necessary at some of the company’s posts, is now seldom resorted to at Fort Laramie; where, though men are frequently killed in its neighborhood, no apprehensions are now entertained of any general designs of hostility from the Indians.