One of the most peculiar and characteristic exhibitions of their power, was to summon a spirit to answer inquiries concerning the future and the absent. A great similarity marked this proceeding in all northern tribes from the Eskimos to the Mexicans. A circular or conical lodge of stout poles four or eight in number planted firmly in the ground, was covered with skins or mats, a small aperture only being left for the seer to enter. Once in, he carefully closed the hole and commenced his incantations. Soon the lodge trembles, the strong poles shake and bend as with the united strength of a dozen men, and strange, unearthly sounds, now far aloft in the air, now deep in the ground, anon approaching near and nearer, reach the ears of the spectators. At length the priest announces that the spirit is present, and is prepared to answer questions. An indispensable preliminary to any inquiry is to insert a handful of tobacco, or a string of beads, or some such douceur under the skins, ostensibly for the behoof of the celestial visitor, who would seem not to be above earthly wants and vanities. The replies received, though occasionally singularly clear and correct, are usually of that profoundly ambiguous purport which leaves the anxious inquirer little wiser than he was before. For all this, ventriloquism, trickery, and shrewd knavery are sufficient explanations. Nor does it materially interfere with this view, that converted Indians, on whose veracity we can implicitly rely, have repeatedly averred that in performing this rite they themselves did not move the medicine lodge; for nothing is easier than in the state of nervous excitement they were then in to be self-deceived, as the now familiar phenomenon of table-turning illustrates.