but some of them were still perfect, and the plan of their structure easily made out. The above ground-plan of the village was taken from the work of Prince Maximilian, and the remaining illustrations are from sketches and measurements of the author. It was situated upon a bluff on the west side 
Fig. 16.—Mandan Village Plot. of the Missouri, and at a bend in the river which formed an obtuse angle, and covered about six acres of land. The village was surrounded with a stockade made of timbers set vertically in the ground, and about ten feet high, but then in a dilapidated state.
The houses were circular in external form, the walls being about five feet high, and sloping inward and upward from the ground, upon which rested an inclined roof, both the exterior wall and the roof being plastered over with earth a foot and a half thick. For this reason they have usually been called "dirt lodges."
Fig. 17.—Ground-plan of a Mandan House. These houses are about forty feet in diameter, with the floor sunk a foot or more below the surface of the ground, six feet high on the inside at the line of the wall, and from twelve to fifteen feet high at the center. Twelve posts, six or eight inches in diameter, are set in the ground, at equal distances, in the circumference of a circle, and rising about six feet above the level of the floor. String-pieces, resting in forks cut in the ends of these posts, form a polygon at the base and also upon the ground floor. Against these an equal number of braces are sunk in the ground about four feet distant, which, slanting upward, are adjusted by means of depressions cut in the ends, so as to hold both the posts and the stringers firmly in their places. Slabs of wood are then set in the spaces between the braces at the
