Far more important is the application of a great variety of decorative elements, all of which consist of curved lines. The Indians have a decided disinclination to apply equidistant curves. In all work of the better class the lines are so arranged that more or less crescent shaped surfaces result, or that narrow, curved areas, wide in the middle, narrower at the ends, are formed. The most striking decorative form which is used almost everywhere, consists of a round or oval field, the “eye design”. This pattern is commonly so placed that it corresponds to the location of a joint. In the present stage of the art, the oval is used particularly as shoulder, hip, wrist, and ankle joint, and as a joint at the base of the tail and of the dorsal fin of the whale. It is considered as a cross section of the ball and socket joint; the outer circle the socket, the inner the ball. Often the oval is developed in the form of a face: either as a full face or a profile. The general disposition of this design demonstrates that the explanation is not by any means always tenable. Thus in the blanket, fig. 205 (p. 215), the eye pattern in the two lower corners has no connection with a joint. In this position, in the mouth of an animal, it is sometimes described as food. The two profile faces higher up on the side of the same blanket, are obviously fillers. They might be replaced by “eye designs”. Another instance of similar kind is found on the upper part of the face of the dish fig. 168 (p. 191). The circular designs shown here might perhaps be interpreted as tail joints, but they are probably decorative elements. The design appears clearly as a filler in fig. 283 _f_ (p. 272) at the inner upper corner on the long side of the box, and on the ears of the beaver, fig. 229, (p. 227). On Chilkat blankets it appears always in fixed positions (see p. 258) and in large boxes it is the constant corner design (see p. 263). Its use and interpretation as a joint is presumably related to the frequent ornamental combination shown, for instance, in the feet on fig. 160 (p. 188) and in the tails fig. 193 (p. 205). The oval represents the joint and the elevated part the limb. These are at the same time formal elements that appear regularly on the lateral border designs on carved boxes (fig. 274, p. 263). The eye design appears in a variety of forms ranging from a large double eye to a circular pattern with black center.