At this village are three small detached houses, each composed of but a single room, a feature not at all in keeping with the spirit of pueblo construction. In this instance it is probably due to the selection of the village as the residence of whites connected with the agency or school. Of these single-room houses, one, near the south end of the long row, was being built by an American, who was living in another such house near the middle of this row. The third house, although fairly well preserved at the time of the survey, was abandoned and falling into ruin. Adjoining the middle one of these three buildings on the south side are the outlines of two small compartments, which were evidently built as corrals for burros and are still used for that purpose. This village, though limited to two stories in height, has, like the others of the first mesa, a number of roof holes or trapdoors in the upper story, an approach to the Zuñi practice. This feature among the Tusayan villages is probably due to intercourse with the more eastern pueblos, for it seems to occur chiefly among those having such communication most frequently. Its presence is probably the result simply of borrowing a convenient feature from those who invented it to meet a necessity. The conditions under which the houses were built have hardly been such as to stimulate the Tusayan to the invention of such a device. The uniform height of the second-story roofs seen in this village, constituting an almost unbroken level, is a rather exceptional feature in pueblo architecture. Only one depression occurs in the whole length of the main row. WALPI. Of all the pueblos, occupied or in ruins, within the provinces of Tusayan and Cibola, Walpi exhibits the widest departure from the typical pueblo arrangement (Pl. XX). The carelessness characteristic of Tusayan architecture seems to have reached its culmination here. The confused arrangement of the rooms, mainly due to the irregularities of the site, contrasts with the work at some of the other villages, and bears no comparison with much of the ancient work. The rooms seem to have been clustered together with very little regard to symmetry, and right angles are very unusual. (See Fig. 8.) The general plan of the village of to-day confirms the traditional accounts of its foundation. According to these its growth was gradual, beginning with a few small clusters, which were added to from time to time as the inhabitants of the lower site upon the spur of the mesa, where the mission was established, moved up and joined the pioneers on the summit. It is probable that some small rooms or clusters were built on this conspicuous promontory soon after the first occupation of this region, on account of its exceptionally favorable position as an outlook over the fields (Pl. XXI).