A further improvement in the chimney was the construction of a corner hood support by means of two short poles instead of a single piece, thus forming a rectangular smoke hood of enlarged capacity. This latter is the most common form in use at the present time in both provinces, but its arrangement in Tusayan, where it represents the highest achievement of the natives in chimney construction, is much more varied than in Cibola. In the latter province the same form is occasionally executed in stone. Fig. 61 illustrates a corner hood, in which the crossed ends of the supporting poles are exposed to view. The outer end of the lower pole is supported from the roof beams by a cord or rope, the latter being embedded in the mud plastering with which the hood is finished. The vertically ridged character of the surface reveals the underlying construction, in which light sticks have been used as a base for the plaster. The Tusayans say that large sunflower stalks are preferred for this purpose on account of their lightness. Figs. 63 and 64 show another Tusayan hood of the type described, and in Fig. 69 a large hood of the same general form, suspended over a piki-stone, is noticeable for the frank treatment of the suspending cords, which are clearly exposed to view for nearly their entire length. [Illustration: Fig. 61. A corner chimney hood with two supporting poles (Tusayan).] In a chimney in a Mashongnavi house, illustrated in Fig. 62, a simple, sharply curved piece of wood has been used for the lower rim of this hood, thus obtaining all the capacity of the two-poled form. The vertical sticks in this example are barely discernible through the plastering, which has been applied with more than the usual degree of care. [Illustration: Fig. 62. A curved chimney hood of Mashongnavi.] [Illustration: Plate LXXXIII. A Zuñi small house.] A curious example illustrating a rudimentary form of two-poled hood is shown in Fig. 63. A straight pole of unusual length is built into the walls across the corner of a room, and its insertion into the wall is much farther from the corner on one side than the other. From the longer stretch of inclosed wall protrudes a short pole that joins the principal one and serves as a support for one side of the chimney-hood. In this case the builder appears to have been too timid to venture on the bolder construction required in the perfected two-poled hood. This example probably represents a stage in the development of the higher form. [Illustration: Fig. 63. A Mashongnavi chimney hood and walled up fireplace.]