A great handicap to the primitive American farmer was the lack of iron tools; for they had no iron before the coming of white men. Another handicap was the absence of horses. The horse was not native to the western hemisphere, and was first introduced by the Spaniards. Previously the only beast of burden in North America was the dog. So the cultivation of the ground was entirely handwork; and the tool most in use was a hoe made from the shoulderblade of the buffalo or of the elk. One may imagine the immense labor which was required to develop and extend the above-named crops over the continent, acclimated and ready to our hand when we arrived in the New World.

THE EARTH-LODGE

As an example of the modifying power of geographic influence exercised upon the arts, we may consider the style of architecture or domiciliary structure prevailing in the Plains region. In each geographic province, which also constitutes a culture area, the style of housing is different according to natural resources and climatic conditions. In the Plains area the permanent dwelling was the earth-covered structure; while the temporary dwelling was the skin tent.

The earth-covered house seems to be an evolution from the thatched house of the southern plains, exemplified in the dwellings of the Wichitas. Farther north the exigencies of the climate suggested the addition of an earth covering.

All the nations and tribes of the Missouri, of whatever racial stock, employed the same style of dwelling. In order to effect the construction of an earth-covered house, a circle of the desired diameter was stripped off from the surface soil. Four tall, strong forked posts were set in the center about 8 or 10 feet apart in a quadrangle. Beams were laid on these forks. Outside of the center posts a circle of shorter posts was set and beams laid in their forks. Rafters were laid from the lower to the upper beams. A wall of timbers was leaned up against the circle of lower beams, the base of the leaning timbers resting upon the ground. An opening was left at the east, and here was made a vestibule 6 to 14 feet long.

Timbers were laid upon the rafters, willow poles were laid upon the timbers, and a thatch of dry grass upon these poles. A covering of earth was now built up about the walls and over the roof to a total thickness of about 2 feet, making, when complete, a dome-shaped structure.

All structural timbers and poles were fastened by tying with ropes of raw hide or of basswood or elm fiber.

An opening of several feet in diameter was left at the top of the dome for a skylight, ventilator, and smoke-escape. The fireplace was at the center of the earth floor; the sleeping compartments were ranged about next to the wall. The altar was at the west side, opposite the doorway.

The diameter of the house varied, according to the needs of the family which occupied it, from 30 to 50 or 60 feet; the height from 15 to 20 feet. This was a family domicile and not a community or tenement house. Such family dwellings were clustered in villages. The evidences of many such village sites may be seen throughout all the region of the Missouri River drainage basin. Their fields of agricultural crops were cultivated in alluvial valleys usually near the villages, although sometimes, when suitable land was not nearby, their fields might be at some distance.

The earth-covered house probably originated with the tribes of Caddoan stock, that is, the Pawnee and Arikara, and was adopted by the tribes of other stocks upon their migration into the Missouri River region.