So far as could be ascertained there is no prearranged plan for an entire house of several stories, or for the arrangement of contiguous houses. Most of the ruins examined emphasize this absence of a clearly defined general plan governing the location of rooms added to the original cluster. Two notable exceptions to this want of definite plan occur among the ruins described. In Tusayan the Fire House (Fig. 7) is evidently the result of a clearly defined purpose to give a definite form to the entire cluster, just as, on a very much larger scale, does the ruin of Kin-tiel, belonging to the Cibola group (Pl. LXIII). In both these cases the fixing of the outer wall on a definite line seems to have been regarded as of more importance than the specific locations of individual rooms or dwellings within this outline. Throughout that part of Tusayan which has been examined, however, the single room seems now to be regarded as the pueblo unit, and is spoken of as a complete house. It is the construction of such a house unit that is here to be described. A suitable site having been selected, the builder considers what the dimensions of the house should be, and these he measures by paces, placing a stone or other mark at each corner. He then goes to the woods and cuts a sufficient number of timbers for the roof of a length corresponding to the width of his house. Stones are also gathered and roughly dressed, and in all these operations he is assisted by his friends, usually of his own gens. These assistants receive no compensation except their food, but that of itself entails considerable expense on the builder, and causes him to build his house with as few helpers as possible. The material having been accumulated, the builder goes to the village chief, who prepares for him four small eagle feathers. The chief ties a short cotton string to the stem of each, sprinkles them with votive meal, and breathes upon them his prayers for the welfare of the proposed house and its occupants. These feathers are called Nakwa kwoci, a term meaning a breathed prayer, and the prayers are addressed to Másauwu, the Sun, and to other deities concerned in house-life. These feathers are placed at the four corners of the house and a large stone is laid over each of them. The builder then decides where the door is to be located, and marks the place by setting some food on each side of it; he then passes around the site from right to left, sprinkling piki crumbs and other particles of food, mixed with native tobacco, along the lines to be occupied by the walls. As he sprinkles this offering he sings to the Sun his Kitdauwi, house song: “Si-ai, a-hai, si-ai, a-hai.” The meaning of these words the people have now forgotten.