_Pecked Grooves._ Some designs were made by pecking grooves in stone. Part of these, those forming petroglyphs, have been mentioned on p. 121 and are shown in Plates XI-XIII. The upper portion of the marking on the grooved stone shown in Fig. 14 is made in this way. It may represent a feather headdress, such as is mentioned on p. 119 and such as is so common in the pictographs as well as in the petroglyphs. The design on the lower part of the same object was formed in the same way and on the obverse of the net sinker shown in Fig. 15 are pecked grooves forming three concentric semi-circles on each side of the groove and nearly parallel with the edges of the object. Taken together, they give the suggestion of a spiral. There are three pecked grooves encircling the stone mortar shown in Fig. 20 and two around the head of the pestle shown in Fig. 25. On each side of the lower part of the pestle shown in Fig. 31 is a longitudinal design made up of four parallel zigzag pecked grooves. The two pecked grooves at right angles to each other on the specimen shown in Fig. 60 while they are probably made for use may have been interpreted as decorative or artistic. This may also be said of the three pecked grooves at right angles to each other on the club-head shown in Fig. 61, and it seems likely that the eight pecked pits made in the middle of the spaces between these grooves and possibly even the two pits at either pole of the object were intended to embellish it. Pecking was also the process employed in forming the sculpture shown in Fig. 125. The four pyramidal or dome-shaped nipples on the top of the knob of a pestle found at Five Mile Rapids mentioned on p. 45 were probably made by pecking, followed by polishing and they may have served a ceremonial as well as a decorative purpose. [Illustration: Fig. 120. Circle and Dot Design on Whetstone made of Slate. From the Yakima Valley. 1/2 nat. size. (Drawn from photograph 44503, 6-4. Original in the collection of Mr. Janeck.)] [Illustration: Fig. 121 (202-8191). Costumed Human Figure made of Antler. From grave No. 25 of a child in dome of volcanic ash near Tampico. 1/2 nat. size.] [Illustration: Fig. 122 (50-3110a, b, c). Quill-flattener made of Antler. From the Dakota at Pine Ridge, South Dakota. 1/4 nat. size. (Collected by Dr. Clark Wissler.)] [Illustration: Fig. 123 (T-22107, 11-177). Fragments of a Figure made of Antler. From Umatilla, Oregon. 1/2 nat. size. (Collected by Mrs. James Terry.)]