The stonework of this village, perhaps approaches the ancient types more closely than that of the others, some of the walls being noticeable for the frequent use of long bond stones. The execution of the masonry at the corners of some of the houses enforces this resemblance and indicates a knowledge of the principles of good construction in the proper alternation of the long stones. A comparison with the Kin-tiel masonry (Pl. LXXXIX) will show this resemblance. As a rule in pueblo masonry an upper house wall was supported along its whole length by a wall of a lower story, but occasional exceptions occur in both ancient and modern work, where the builders have dared to trust the weight of upper walls to wooden beams or girders, supported along part of their length by buttresses from the walls at their ends or by large, clumsy pieces of masonry, as was seen in the house of Sichumovi. In an upper story of Walpi also, partitions occur that are not built immediately over the lower walls, but on large beams supported on masonry piers. In the much higher terraces of Zuñi, the strength of many of the inner ground walls must be seriously taxed to withstand the superincumbent weight, as such walls are doubtless of only the average thickness and strength of ground walls. The dense clustering of this village has certainly in some instances thrown the weight of two, three, or even four additional, stories upon walls in which no provision was made for the unusual strain. The few supporting walls that were accessible to inspection did not indicate any provision in their thickness for the support of additional weight; in fact, the builders of the original walls could have no knowledge of their future requirements in this respect. In the pueblos of the Chaco upper partition walls were, in a few instances, supported directly on double girders, two posts of 12 or 14 inches in diameter placed side by side, without reinforcement by stone piers or buttresses, the room below being left wholly unobstructed. This construction was practicable for the careful builders of the Chaco, but an attempt by the Tusayan to achieve the same result would probably end in disaster. It was quite common among the ancient builders to divide the ground or storage floor into smaller rooms than the floor above, still preserving the vertical alignment of the walls. [Illustration: Plate LXVIII. Nutria, view.]