Mr. Stephen has been informed by the Indians that the man is a mason and the woman the plasterer, the house belonging to the woman when finished; but according to my own observation this is not the universal practice in modern Tusayan. In the case of the house in Oraibi, illustrated in Pl. XL from a photograph, much, if not all, of the masonry was laid, as well as finished and plastered, by the woman of the house and her female relatives. There was but one man present at this house-building, whose grudgingly performed duty consisted of lifting the larger roof beams and lintels into place and of giving occasional assistance in the heavier work. The ground about this house was strewn with quantities of broken stone for masonry, which seemed to be all prepared and brought to the spot before building began; but often the various divisions of the work are carried on by both men and women simultaneously. While the men were dressing the stones, the women brought earth and water and mixed a mud plaster. Then the walls were laid in irregular courses, using the mortar very sparingly. The house is always built in the form of a parallelogram, the walls being from 7 to 8 feet high, and of irregular thickness, sometimes varying from 15 to 22 inches in different parts of the same wall. Pine, piñon, juniper, cottonwood, willow, and indeed all the available trees of the region are used in house construction. The main beams for the roof are usually of pine or cottonwood, from which the bark has been stripped. The roof is always made nearly level, and the ends of the beams are placed across the side walls at intervals of about 2 feet. Above these are laid smaller poles parallel with the side walls, and not more than a foot apart. Across these again are laid reeds or small willows, as close together as they can be placed, and above this series is crossed a layer of grass or small twigs and weeds. Over this framework a layer of mud is spread, which, after drying, is covered with earth and firmly trodden down. The making of the roof is the work of the women. When it is finished the women proceed to spread a thick coating of mud for a floor. After this follows the application of plaster to the walls. Formerly a custom prevailed of leaving a small space on the wall unplastered, a belief then existing that a certain Katchina came and finished it, and although the space remained bare it was considered to be covered with an invisible plaster.