In Plate XLVI I present a number of plain circular disks. The larger specimens are often as much as four or even five inches in diameter and the smaller fraternize with beads, as I have shown in Plate XLV. Figs. 1 and 2 are from a mound at Paint Rock Ferry, Tenn. They are neat, moderately thin, concavo-convex disks, with smooth surfaces and rounded edges. The first has two perforations at the upper edge, while the other has similarly placed but much smaller ones, besides a small central perforation surrounded by an incised circle. The national collection contains similar specimens from most of the Atlantic States; they differ from the larger discoidal beads only in the method of perforation. A typical specimen of this class, four and a half inches in diameter, is shown in Fig. 3. It was associated with the remains of a number of children in a mound in Hardin County, Ohio. Disks of this class were usually suspended upon the breast with the concave side out. That many of the specimens described were suspended in this way is indicated by the character of the abrasion produced by the cords. On the concave side the cord of suspension has worn deep grooves between the perforations, and on the opposite or convex side similar grooves extend obliquely upward from the holes toward the margin of the disk, indicating the passage of the cord upward and outward around the neck of the wearer. A large white disk, similar to the one just described, was obtained from a grave at Accotink, Va. It is five inches in diameter and has one central and three marginal perforations. It is made from a _Busycon perversum_, and is neatly shaped and well polished. A fine specimen two inches in diameter was obtained from a mound on the French Broad River, Tenn., and, with many other similar specimens, is now in the national collection. The central perforation is often very much enlarged. A number of specimens, recently sent to the National Museum, from a mound in Auglaize County, Ohio, show several stages of this enlargement. One specimen five inches across has a perforation nearly one inch in diameter, while in another the perforation is enlarged until the disk has become a ring. These gorgets show evidences of long use, the surfaces and edges being worn and the perforations much extended in the manner described above. They have been derived from the _Busycon perversum_. In Fig. 4 I illustrate an annular gorget from a mound in Alexander County, Ill. It was found associated with ornaments of copper by the side of a human skull, and is hence supposed to have been an ear ornament. It is fragmentary and has suffered greatly from decay, the surface being mostly covered with a dark film of decomposed shell substance, which when broken away, exposes the chalky surface of the shell. These shell rings, so far as I can learn, have been found in the States of Ohio and Illinois only.