Fig. 2 represents the back or convex side of the disk, the long curved lines indicate the laminations of the shell, and the three narrow crescent-shaped figures near the center are perforations resulting from the deep engraving of the three lines of the volute on the concave side. The stone grave in which this ornament was found occupied the summit of a mound on the banks of the Cumberland River opposite Nashville, Tennessee. Professor Jones, also represents in the same work, page 109, a large fragment of a similar ornament which has apparently had seven circlets in the dotted zone and thirteen marginal bosses. This specimen, which is three and one-half inches in diameter, was exhumed by Dr. Grant, from "a small rock mound" near Pulaski, Giles County, Tennessee. [Illustration: PL. LVI--SCALLOPED SHELL DISKS. 1. Nashville, Tenn. 2. Nashville, Tenn. (reverse). 3. Nashville, Tenn. 4. Oldtown, Tenn. 5. Nashville, Tenn. 6. Pulaski, Tenn.] Prof. C. C. Jones describes a number of stone disks containing designs which evidently belong to the class under consideration. He inclines to the opinion that they were designed for some sacred office, and suggests that they were used as plates to offer food to the sun god. The specimen of which I present an outline in Fig. 3, Plate LVII, is figured by Mr. Jones, and his description is as follows: It is "circular in form, eleven inches and a half in diameter, an inch and a quarter in thickness, and weighing nearly seven pounds. It is made of a close-grained, sea-green slate, and bears upon its surface the stains of centuries. Between the rim, which is scalloped, and the central portion, are two circular depressed rings, running parallel with the circumference and incised to the depth of a tenth of an inch. This circular basin, nearly eight inches in diameter, is surrounded by a margin or rim a little less than two inches in width, traversed by the incised rings and beveled from the center toward the edge. The lower surface or bottom of the plate is flat, beveled upward, however, as it approaches the scalloped edge, which is not more than a quarter of an inch in thickness. * * * The use of these plates from the Etowah Valley may, we think, be conjectured with at least some degree of probability. It is not likely that they were employed for domestic or culinary purposes. Their weight, variety, the care evidenced in their construction, and the amount of time and labor necessarily expended in their manufacture, forbid the belief that they were intended as ordinary dishes from which the daily meal was to be eaten, and suggest the impression that they were designed to fulfill a more unusual and important office. The common vessels from which the natives of this region ate their prepared food were bowls and pans fashioned of wood and baked clay, calabashes, pieces of bark, and large shells. Flat platters, made of an admixture of clay and pounded shells, well kneaded and burnt,