The finish of pueblo masonry rarely went far beyond the two leading forms, to which attention has been called, the free use of adobe on the one hand and the banded arrangement of ancient masonry on the other. These types appear to present development along divergent lines. The banded feature doubtless reached such a point of development in the Chaco pueblos that its decorative value began to be appreciated, for it is apparent that its elaboration has extended far beyond the requirements of mere utility. This point would never have been reached had the practice prevailed of covering the walls with a coating of mud. The cruder examples of banded construction, however--those that still kept well within constructional expediency--were doubtless covered with a coating of plaster where they occurred inside of the rooms. At Tusayan and Cibola, on the other hand, the tendency has been rather to elaborate the plastic element of the masonry. The nearly universal use of adobe is undoubtedly largely responsible for the more slovenly methods of building now in vogue, as it effectually conceals careless construction. It is not to be expected that walls would be carefully constructed of banded stonework when they were to be subsequently covered with mud. The elaboration of the use of adobe and its employment as a periodical coating for the dwellings, probably developed gradually into the use of a whitewash for the house walls, resulting finally in crude attempts at wall decoration. Many of the interiors in Zuñi are washed with a coating of white, clayey gypsum, used in the form of a solution made by dissolving in hot water the lumps of the raw material, found in many localities. The mixture is applied to the walls while hot, and is spread by means of a rude glove-like sack, made of sheep or goat skin, with the hair side out. With this primitive brush the Zuñi housewives succeed in laying on a smooth and uniform coating over the plaster. An example of this class of work was observed in a room of house No. 2. It is difficult to determine to what extent this idea is aboriginal; as now employed it has doubtless been affected by the methods of the neighboring Spanish population, among whom the practice of white-coating the adobe houses inside and out is quite common. Several traces of whitewashing have been found among the cliff-dwellings of Canyon de Chelly, notably at the ruin known as Casa Blanca, but as some of these ruins contained evidences of post-Spanish occupation, the occurrence there of the whitewash does not necessarily imply any great antiquity for the practice.