_The ancient form of kiva._--In none of the ruins examined in the province of Tusayan have distinct traces of ancient kivas been found, nor do any of them afford evidence as to the character of the ceremonial rooms. It is not likely, however, that the present custom of building these chambers wholly under ground prevailed generally among the earlier Tusayan villages, as some of the remains do not occupy sites that would suggest such arrangement. The typical circular kiva characteristic of most of the ancient pueblos has not been seen within the limits of Tusayan, although it occurs constantly in the ruins of Canyon de Chelly which are occasionally referred to in Tusayan tradition as having been occupied by related peoples. Mr. Stephen, however, found vestiges of such ancient forms among the debris of fallen walls occupying two small knolls on the edge of the first mesa, at a point that overlooks the broken-down ruin of Sikyatki. On the southeast shoulder of one of the knolls is a fragment of a circular wall which was originally 12 feet in diameter. It is built of flat stones, from 2 to 4 inches thick, 6 to 8 inches wide, and a foot or more in length, nearly all of which have been pecked and dressed. Mud mortar has been sparingly used, and the masonry shows considerable care and skill in execution; the curve of the wall is fairly true, and the interstices of the masonry are neatly filled in with smaller fragments, in the manner of some of the best work of the Canyon de Chelly ruins. The knoll farther south shows similar traces, and on the southeast slope is the complete ground plan of a round structure 16½ feet in diameter. At one point of the curved wall, which is about 22 inches thick, occurs the characteristic recessed katchinkihu (described later in discussing the interior of kivas) indicating the use of this chamber for ceremonial purposes. Although these remains probably antedate any of the Tusayan ruins discussed above (Chapter II), they suggest a connection and relationship between the typical kiva of the older ruins and the radically different form in use at the present time. _Native explanations of position._--Notwithstanding the present practice in the location of kivas, illustrated in the plans, the ideal village plan is still acknowledged to have had its house-clusters so distributed as to form inclosed and protected courts, the kivas being located within these courts or occupying marginal positions in the house-clusters on the edge of the inclosed areas. But the native explanations of the traditional plan are vague and contradictory.