Bearing in mind the picture of this bird, we pass to a second form (plate CXXXVIII, _a_), in which we can trace the same parts without difficulty. On a round head is placed a feathered headdress. The different parts of the outstretched wings are readily homologized even in details in the two figures. There are, for instance, two terminal wing feathers in each wing; the appendages to the shoulder exist in both, and the lateral spurs, exteriorly and interiorly, are represented with slight modifications. [Illustration: FIG. 272--Man-eagle] The body is ornamented in the same way in both figures. It is continued posteriorly on each side into triangular extensions, and the same is true of its anterior, which in one figure has three curved lines, and in the other a simple crook. There are three tail-feathers in each figure. I believe there can be no doubt that both these designs represent the same idea, and that a mythologic bird was intended in each instance. The step in conventionalism from the last-mentioned figure of a bird to the next (plate CXLVII, _a_) is even greater than in the former. The head in this picture is square or rectangular, and the wings likewise simple, ending in three incurved triangles without appendages. The tail has five feathers instead of three, in which, however, the same symbolic markings which distinguish tail-feathers are indicated. The conventionalized wings of this figure are repeated again and again in ancient Tusayan pottery decorations, as one may see by an examination of the various birds shown in the plates. In many instances, however, all the other parts of the bird are lost and nothing but the triangular feathers remain; but as these have the same form, whatever organs are missing, the presumption is that their meaning has not changed. In passing to the figure of the bird shown in plate CXXXVIII, _b_, we find features homologous with those already considered, but also detect considerable modification. The head is elongated, tipped with three parallel lines, but decorated with markings similar to those of the preceding figure. The outstretched wings have a crescentic form, on the anterior horn of which are round spots with parallel lines arising from them. This is a favorite figure in pottery decoration, and is found very abundantly on the exterior of food bowls; it represents highly conventionalized feathers, and should be so interpreted wherever found. The figure of the body of the bird depicted is simple, and the tail is continued into three tail-feathers, as is ordinarily the case in highly conventionalized bird figures.