In their drawings of animals the ancient Hopi artists were often far from realistic. They violated many fundamental rules in perspective. This is well illustrated in profile figures. It often happens, for instance, in delineating the head of an animal, as seen from one side, that both eyes are represented. The feathers of a bird's tail, normally on a horizontal plane, are brought into a vertical. Internal organs which are hidden from sight are sometimes represented—a characteristic of modern Pueblo art, where, as in pictures of antelopes, it is not uncommon to find the heart and œsophagus, or even the intestinal tract, drawn as if the animal were transparent. In a figure of a bird shown on plate LIX in my preliminary account of Sikyatki, where the artist apparently had no available space in which to represent the extremity of the tail, it is bent upward, and the tips of three feathers conventionalized into three triangles, one of the symbols of wing feathers, as elsewhere shown. In their simplest forms figures of birds are crudely represented, consisting of a head with curved beak and elongated body, which is continued backward into three or four parallel lines, representing tail feathers. It is an instructive fact that _three_[4] seems to be the predominating number of tail feathers in pictures of birds, as seen in the clusters of symbolic feathers, _f_, in the richly decorated vase a part of which is depicted in figure 5. This number, however, is not universal, for there are many well-drawn figures of birds with more than three tail-feathers, and in some of the simpler forms there are but two. Certain jars in the form of birds have the wing and tail feathers represented by parallel lines, and the same bands are often employed on the bodies of dolls to represent a feathered garment which some mythological personages are reputed to have worn. One of the common forms of the feather symbol is shown in figure 1, which represents the tail of a bird as pictured on a beautiful food basin from Sikyatki. In this figure five feathers are represented, and the characteristic marking of each feather is a division into a black and red zone by a diagonal line. The upper part of the figure represents the body and the two lateral appendages the wings, which in the original figure are well represented. A figure of feathers with the same outline, but destitute of the characteristic markings of figure 1, may be seen in figure 2, where three feather symbols are represented. [Illustration: 1 2] Figure 2[5] represents a crest composed of three feathers copied from a design on the head of a reptilian figure depicted on the interior of a food basin from Sikyatki. There are other figures of animals which bear this symbolic form of feather on the head, and its occurrence as a decorative design on the exterior of food basins, where there is no other suggestion of a bird, is common.