The Sioux are very expert in making their lodges comfortable, taking more pains in their construction than most Indians. They are all of conical form: a framework of straight slender poles, resembling hop-poles, and from twenty to twenty-five feet long, is first erected, round which is stretched a sheeting of buffalo robes, softly dressed, and smoked to render them watertight. The apex, through which the ends of the poles protrude, is left open to allow the smoke to escape. A small opening, sufficient to permit the entrance of a man, is made on one side, over which is hung a door of buffalo hide. A lodge of the common size contains about twelve or fourteen skins, and contains comfortably a family of twelve in number. The fire is made in the centre immediately under the aperture in the roof, and a flap of the upper skins, is closed or extended at pleasure, serving as a cowl or chimney-top to regulate the draught and permit the smoke to escape freely. Round the fire, with their feet towards it, the inmates sleep on skins and buffalo rugs, which are rolled up during the day, and stowed at the back of the lodge. In travelling, the lodge-poles are secured half on each side a horse, and the skins placed on transversal bars near the ends, which trail along the ground,--two or three squaws or children mounted on the same horse, or the smallest of the latter borne in the dog travées. A set of lodge-poles will last from three to seven years, unless the village is constantly on the move, when they are soon worn out in trailing over the gravelly prairie. They are usually of ash, which grows on many of the mountain creeks, and regular expeditions are undertaken when a supply is required, either for their own lodges, or for trading with those tribes who inhabit the prairies at a great distance from the locality where the poles are procured. There are also certain creeks where the Indians resort to lay in a store of kinnik-kinnik, (the inner bark of the red, willow,) which they use as a substitute for tobacco, and which has an aromatic and very pungent flavour. It is prepared for smoking by being scraped in thin curly flakes from the slender saplings, and crisped before the fire, after which it is rubbed between the hands into a form resembling leaf-tobacco, and stored in skin bags for use. It has a highly narcotic effect on those not habituated to its use, and produces a heaviness sometimes approaching stupefaction, altogether different from the soothing effects of tobacco.