open court, the fourth side being protected by a low stone wall. Such were the pueblos now in ruins upon the Rio Chaco in New Mexico.
In the highest form of this architecture in Yucatan and Chiapas, the pyramidal elevation appears faced with dry stone walls. The buildings upon its summit were often in the form of a quadrangle, with an open court in the center; but the buildings were generally disconnected at the four angles, as in the House of the Nuns at Uxmal. All of these forms are parts of one system of indigenous architecture; and the several parts are susceptible of articulation in a series representing a progressive development of a common thought, that of joint residence, with the practice of communism in living in large groups in the same house, or in one group consisting of the entire household.
Let us, then, inquire whether the principal embankments of the Mound-Builders were adapted, as raised platforms of earth, for the sites of long houses constructed on the communistic principle, and in the general style of the houses of the American aborigines.
In the valley of the Scioto, in Ohio, and within an extent of twelve miles, were found the remains of seven villages of the Mound-Builders, four upon the east and three upon the west side of the river. They are among the best of their works, and furnish fair examples of the whole. One of the number, the High Bank Pueblo, is shown in ground-plan in the engraving. Fig. 46 It is the only one in which the inclosure is octagonal instead of square. The remains of each of the seven consist principally of embankments like railway grades several feet high and correspondingly broad at the base, inclosing a square or slightly irregular area, the embankment on each of the four sides being about a thousand feet long, with an opening or gateway in the middle and at the four angles of the square. Attached to or quite near to five of the seven are large circular inclosures, each formed by a similar though lower embankment of earth and inclosing a space somewhat larger than the squares. The respective heights of the embankments, forming four of the rectangles, are given at four, six, ten, and twelve feet; and of three of the circular embankments, at five and six feet, respectively.
The embankments inclosing the squares were probably the sites of their
