mud mortar, were filled in or plugged with small fragments of stone, which, after being partly embedded in the mud of the joint, were driven in with unhafted stone hammers, producing a fairly even face of masonry, afterward gone over with mud plastering of the consistency of modeling clay, applied a handful at a time. Piled up on the ground near the new house at convenient points for the builders may be seen examples of the larger wall stones, indicating the marked tabular character of the pueblo masons’ material. The narrow edges of similar stones are visible in the unplastered portions of the house wall, which also illustrates the relative proportion of chinking stones. This latter, however, is a variable feature. [Pl. XV] affords a clear illustration of the proportion of these small stones in the old masonry of Payupki; while in [Pl. XI], illustrating a portion of the outer wall of the Fire House, the tablets are fewer in number and thinner, their use predominating in the horizontal joints, as in the best of the old examples, but not to the same extent. [Fig. 35] illustrates the inner face of an unplastered wall of a small house at Ojo Caliente, in which the modern method of using the chinking stones is shown. This example bears a strong resemblance to the Payupki masonry illustrated in [Pl. XV] in the irregularity with which the chinking stones are distributed in the joints of the wall. The same room affords an illustration of a cellar-like feature having the appearance of an intentional excavation to attain a depth for this room

corresponding to the adjoining floor level, but this effect is due simply to a clever adaptation of the house wall to an existing ledge of sandstone. The latter has had scarcely any artificial treatment beyond the partial smoothing of the rock in a few places and the cutting out of a small niche from the rocky wall. This niche occupies about the same position in this room that it does in the ordinary pueblo house. It is remarkable that the pueblo builders did not to a greater extent utilize their skill in working stone in the preparation of some of the irregular rocky sites that they have at times occupied for the more convenient reception of their wall foundations; but in nearly all such cases the buildings have been modified to suit the ground. An example of this practice is illustrated in [Pl. XXIII], from the west side of Walpi. In some of the ancient examples the labor required to so prepare the sites would not have exceeded that expended on the massive masonry composed of numberless small stones. Many of the older works testify to the remarkable patience and industry of the builders in amassing and carefully adjusting vast quantities of building materials, and the modern Indians of Tusayan and Cibola have inherited much of this ancient spirit; yet this industry was rarely diverted to the excavation of room or village sites, except in the case of the kivas, in which special motives led to the practice. In some of the Chaco pueblos, as now seen, the floors of outer marginal rooms seem to be depressed below the general level of the surrounding soil; but it is now difficult to determine whether such was the original arrangement, as much sand and soil have drifted against the outer walls, raising the surface. In none of the pueblos within the limits of the provinces under discussion has there been found any evidence of the existence of underground cellars; the rooms that answer such purpose are built on the level of the ground. At Tusayan the ancient practice of using the ground-floor rooms for storage still prevails. In these are kept the dried fruit, vegetables, and meats that constitute the principal winter food of the Tusayan. Throughout Tusayan the walls of the first terrace rooms are not finished with as much care as those above that face the open courts. A quite smoothly finished coat of adobe is often seen in the upper stories, but is much more rarely applied to the rough masonry of the ground-floor rooms. At Zuñi no such difference of treatment is to be seen, a result of the recent departure from their original defensive use. At the present day most of the rooms that are built on the ground have external doors, often of large size, and are regarded by the Zuñi as preferable to the upper terraces as homes. This indicates that the idea of convenience has already largely overcome the traditional defensive requirements of pueblo arrangement. The general finish and quality of the masonry, too, does not vary noticeably in different portions of the village. An occasional wall may be seen in which underlying stones may be traced through the thin adobe covering, as in one of the walls of the court illustrated in [Pl. LXXXII], but most of the walls have a fairly smooth

finish. The occasional examples of rougher masonry do not seem to be confined to any particular portion of the village. At Tusayan, on the other hand, there is a noticeable difference in the extent to which the finishing coat of adobe has been used in the masonry. The villages of the first mesa, whose occupants have come in frequent contact with the eastern pueblo Indians and with outsiders generally, show the effect in the adoption of several devices still unknown to their western neighbors, as is shown in the discussion of the distribution of roof openings in these villages, pp. [201]-[208]. The builders of the first mesa seem also to have imitated their eastern brethren in the free use of the adobe coating over their masonry, while at the villages of the middle mesa, and particularly at Oraibi, the practice has been comparatively rare, imparting an appearance of ruggedness and antiquity to the architecture.

Fig. 35. An unplastered house wall in Ojo Caliente.

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.

Plate LXXXIX. Masonry in the north wing of Kin-tiel.