construction, and particularly by their small size, in this respect more closely resembling the rooms of the ancient pueblos. As a result the poorer classes would be more likely to perpetuate primitive devices, through the necessity for practicing methods that to the wealthier members of the tribe were becoming a matter of tradition only. In such a sedentary tribe as the present Zuñi, these differences of wealth and station are more marked than one would expect to find among a people practicing a style of architecture so evidently influenced by the communal principle, and the architecture of to-day shows the effect of such distinctions. In the house of the governor of Zuñi a new room has been recently built, in which the second series of the roof, that applied over the principal beams, consisted of pine shakes or shingles, and these supported the final earth covering without any intervening material. In the typical arrangement, however, illustrated in the figure, the first series, or principal beams, are covered by another series of small poles, about an inch and a half or two inches in diameter, at right angles to the first, and usually laid quite close together. The ends of these small poles are partially embedded in the masonry of the walls. In an example of the more careful and laborious work of the ancient builders seen at Peñasco Blanco, on the Chaco, the principal beams were covered with narrow boards, from 2 to 4 inches wide and about 1 inch thick, over which was put the usual covering of earth. The boards had the appearance of having been split out with wedges, the edges and faces having the characteristic fibrous appearance of torn or split wood. At Zuñi an instance occurs where split poles have been used for the second series of a roof extending through the whole thickness of the wall and projecting outside, as is commonly the case with the first series. A similar arrangement was seen in a ruined tower in the vicinity of Fort Wingate, New Mexico. In the typical roof construction illustrated the second series is covered with small twigs or brush, laid in close contact and at right angles to the underlying series, or parallel with the main beams. Pl. XCVI, illustrating an unroofed adobe house in Zuñi, shows several bundles of this material on an adjoining roof. This series is in turn covered with a layer of grass and small brush, again at right angles, which prepares the frame for the reception of the final earth covering, this latter being the fifth application to the roof. In the example illustrated the entire earth covering of the roof was finished in a single application of the material. It has been seen that at Tusayan a layer of moistened earth is applied, followed by a thicker layer of the dry soil.