is not so common as on external ones, as there is not the same necessity for holding together the poles, the sides of the opening performing that office. There are two places in Zuni, portions of the densest house cluster, where the needs of unusual traffic have been met by the employment of double ladders, made of three vertical poles, which accommodate two tiers of rungs. The sticks forming the rungs are inserted in continuous lengths through all three poles, and the cross pieces at the top are also continuous, being formed of a single flat piece of wood perforated by three holes for the reception of the tips of the poles. In additional to the usual cross pieces pierced for the reception of the side poles and rudely carved into ornamental forms, many temporary cross pieces are added during the harvest season in the early autumn to support the strips of meat and melons, strings of red peppers, and other articles dried in the open air prior to storage for winter use. At this season every device that will serve this purpose is employed. Occasionally poles are seen extending across the reentering angles of a house or are supported on the coping and rafters. The projecting roof beams also are similarly utilized at this season. Zuni ladders are usually provided with about eight rungs, but a few have as many as twelve. The women ascend these ladders carrying ollas of water on their heads, children play upon them, and a few of the most expert of the numerous dogs that infest the village can clumsily make their way up and down them. As described in a previous section all houses built during the year are consecrated at a certain season, and among other details of the ceremonial, certain rites, intended to prevent accidents to children, etc., are performed at the foot of the ladders. In Tusayan, where stone is abundant, the ladder has not reached the elaborate development seen in Zuñi. The perforated cross piece is rarely seen, as there is little necessity for its adoption. The side poles are held together by the top and bottom rungs, which pass entirely through the side pieces and are securely fixed, while the ends of the others are only partly embedded in the side pieces. In other cases (Pl. XXXII) the poles are rigidly held in place by ropes or rawhide lashings. Short ladders whose side poles are but little prolonged beyond the top rung are of common occurrence, particularly in Oraibi. Three such ladders are shown in Pl. LXXXIV. A similar example may be seen in Pl. CVII, in connection with a large opening closed with rough masonry. In these cases the rungs are made to occupy slight notches or depressions in the upright poles and are then firmly lashed with rawhide, forming a fairly rigid structure. This type of ladder is probably a survival of the earliest form of the pueblo ladder.