[Illustration: Fig. 3. Ruin between Bat House and Horn House.] The site affords an extended outlook to the south over a large part of Jeditoh Valley. The topography about this point, which receives the drainage of a considerable area of the mesa top, would fit it especially for the establishment of a reservoir. This fact probably had much to do with its selection as a dwelling site. The masonry is in about the same state of preservation as that of the Horn House, and some of the stones of the fallen walls seem to have been washed down from the mesa edge to the talus below. BAT HOUSE. The Bat House is a ruin of nearly the same size as the Horn House, although in its distribution it does not follow the mesa edge so closely as the latter, and is not so elongated in its general form. The northern portion is quite irregular, and the rooms seem to have been somewhat crowded. The southern half, with only an occasional room traceable, as indicated on the plan, Pl. VIII, still shows that the rooms were distributed about a large open court. The Bat House is situated on the northwest side of the Jeditoh Valley, on part of the same mesa occupied by the two ruins described above. It occupies the summit of a projecting spur, overlooking the main valley for an extent of more than 5 miles. The ruin lies on the extreme edge of the cliff, here about 200 feet high, and lying beneath it on the east and south are large areas of arable land. Altogether it forms an excellent defensive site, combined with a fair degree of convenience to fields and water from the Tusayan point of view. This ruin, near its northeastern extremity, contains a feature that is quite foreign to the architecture of Tusayan, viz, a defensive wall. It is the only instance of the use by the Hopituh of an inclosing wall, though it is met with again at Payupki (Pl. XIII), which, however, was built by people from the Rio Grande country. MISHIPTONGA. Mishiptonga is the Tusayan name for the southernmost, and by far the largest, of the Jeditoh series of ruins (Pl. IX). It occurs quite close to the Jeditoh spring which gives its name to the valley along whose northern and western border are distributed the ruins above described, beginning with the Horn house. [Illustration: Plate XXI. View of Walpi.]