In figure 17 we have a characteristic example of this fabric, obtained from a fragment of pottery from a mound at Sevierville, Tennessee. [Illustration: BUREAU OF ETHNOLOGY THIRTEENTH ANNUAL REPORT PL. VIII COPPER CELTS WITH REMNANTS OF CLOTH.] The impression is quite perfect. The cords are somewhat uneven, and seem to have been only moderately well twisted. They were probably made of hemp fiber. It will be observed that the threads of the web are placed at regular intervals, while those of the woof are irregularly placed. It may be noticed that in one case the woof has not been doubled, the single thread having, as a consequence, exactly the same relation to the opposing series as corresponding threads in simple interlacing. The impression, of which this is only a part, indicates that the cloth used in shaping the vessel was considerably distorted when applied to the soft clay. [Illustration: FIG. 18.--Twined fabric from ancient salt vessel, Illinois.] [Illustration: FIG. 19.--Twined fabric from ancient salt vessel, Illinois.] Nowhere else are found so many fine impressions of fabrics on clay vessels as in the ancient salt-making localities of the Mississippi valley. The huge bowls or vats used by the primitive salt-maker have generally been modeled in coarse, open fabrics, or have had cloths impressed upon them for ornament. In figures 18 and 19 fine examples of these impressions are given. The latter engraving illustrates a specimen in which every detail is perfectly preserved. Only a small portion of the original is shown in the cut. It is noticeable that the cords are quite heavy and well twisted, although the spacing is somewhat irregular. [Illustration: FIG. 20.--Twined fabric from a piece of clay, Arkansas.] [Illustration: FIG. 21.--Twined fabric from ancient pottery, Tennessee.] The example given in figure 20, impressed on a fragment of clay from Arkansas, has an ornamental border produced by looping the cords of the web, which seem to have been five in number, each one passing over four others before recrossing the frame. A specimen showing a somewhat different border is given in figure 21. [Illustration: FIG. 22.--Twined fabric from ancient pottery, Missouri.] The interesting specimen illustrated in figure 22 was obtained from a small fragment of pottery found in Ripley county, Missouri. The combination of the two series of strands clearly indicates the type of fabric, the twisted cords of the woof being placed very far apart. The warp is of braid formed by plaiting strands of untwisted fiber, probably bast. All the details are shown in the most satisfactory manner in the clay cast. [Illustration: FIG. 23.--Twined fabric from ancient pottery, Carter county, Tennessee.]