understand, besides horticulture, the use of adobe bricks, and the art of constructing' long joint-tenement houses, closed up in the first story for defensive reasons, and built in the terraced form two, three, and four stories high, the ascent to the roof of the first story being made by ladders.
If, then, a tribe of Village Indians, with such habits and experience, emigrated centuries ago in search of new homes, and in course of time they, or their descendants, reached the Scioto Valley, in Ohio, they would find it impossible to construct houses of adobe bricks able to resist the rains and frosts of that climate, even if they found adobe soil. Some modification of their house architecture would be forced upon them through climatic reasons. They might have used stone, if possessed of sufficient skill to quarry it and construct walls of stone; but they did not produce such houses. Or they might have fallen back upon a house of inferior grade, located upon the level ground, such as the timber-framed houses of the Minnitarees and Mandans, in which case there would have been no necessity for the embankments in question. Or, they might have raised these embankments of earth, inclosing rectangles or squares, and constructed long houses upon them, which, it is submitted, is precisely what they did. Such houses would agree in general character and in plan, and in the uses to which they were adapted, with those of the aborigines found in all parts of America
The elevated platform of earth as a house-site is an element in Indian architecture which reappears in a conspicuous manner in the solid pyramidal platforms upon which the great stone structures in Yucatan and Central America were erected, and which sprang from the defensive and the communal principles in living. This latter principle required large houses for the accommodation-of a number of families in the Lower Status of barbarism, and large enough in some cases, when the people were in the Middle Status, to accommodate an entire tribe. When adobe bricks were used the house was usually a single structure, three or four rooms deep and three or four stories high, constructed in a block, and in the nature of a fortress. The ground story was little used, except for storage, and they lived, practically, upon the roof terraces. When the use of stone came in, the structure often consisted of a main building four or five hundred feet long, and two wings two and three hundred feet in length, inclosing three sides of an
