Status of barbarism. The dinner of Montezuma, before considered, is an illustration.
Near Uxmal are the interesting ruins of Zayi, which present a new feature in Yucatan house architecture. Upon a low eminence are three independent structures, the second within and above the first or lowest, and the third within and above the second, presenting the appearance, in the distance, of a single quadrangular edifice in three receding stories. But each stands on a separate terrace, and is built against the one within, which rises above it, except the inner one, a single edifice occupying the summit. The outer quadrangle stands on the lowest terrace. The measurements of the several buildings are indicated on the plan. Together they contain eighty-seven apartments, assuming the parts in ruins to have corresponded with the parts preserved. The rooms, as usual, are either single or in pairs. An external staircase upon the front and rear sides interrupts the buildings on these sides from the lower terrace to the upper. The dots in the apertures indicate columns, which are found in this and several other structures. In case of attack, the outer quadrangle was not defensible; 
Fig. 56.—Cross-section through one apartment. but its inhabitants could retire to the second terrace above, and defend their fortress at the head of the staircases, which were the only avenues of approach except by scaling the outer quadrangle, a very improbable undertaking.
Attention has been called to this pueblo, which would accommodate two thousand or more persons, for a special reason. It seems to furnish conclusive proof of the manner in which these great edifices were erected in order to construct the peculiar triangular stone ceiling, which is the striking characteristic of this architecture.
To understand the problem, the annexed cross-section of a single room will afford some aid by showing the relations of the walls to the chamber and its ceiling. The chamber, with its vaulted ceiling, was constructed over a solid core of masonry, laid simultaneously with the walls, which was removed after the
