Professor T. H. Lewis has obtained ornaments of this class during mound explorations conducted by him at Prairie du Chien, Crawford County, and Wyalusing, Grant County, in Wisconsin. Ear-spools have been obtained from various localities in Ohio, Illinois, and the South. Some of these are rather elaborately ornamented with embossed figures. In the Field Museum collections are specimens which were taken from the mounds of the celebrated Hopewell Group in Ohio. A specimen in the Ohio State Archæological and Historical Society’s collections has still attached to it a fragment of the string or cord by means of which it was probably attached to the ear of its aboriginal owner. Similar objects of stone overlaid with sheet-copper have been described by various authors. _Gorgets and Pendants._ (_See Figs. 570 and 617._) Careful inquiry has shown the existence of only a small number of these in Wisconsin collections. It is quite possible, however, that such ornaments were in more common use among Wisconsin aborigines than the present limited number would indicate. Being fashioned of sheet-copper, they would even under ordinary conditions be more likely to suffer destruction, through decomposition, than many other less fragile artifacts, which show very plainly the effects of chemical action during their interment. One form of pendant is triangular in shape and is provided at the broad upper extremity with two perforations, by which means it could be attached, by a cord, to the person of its aboriginal owner. Such pendants have been found in Winnebago, Jefferson, Crawford, and Barron counties. One of the largest measures three and one eighth inches in length, and one and one fourth inches in width at the upper edge. Sheet-copper pendants of circular shape have also been obtained. These have perforations near the edge or at the middle. The largest specimen known is about three and one quarter inches in diameter. Pendants of this form have been obtained in Kenosha, Jefferson, Dane, Columbia, Grant, Crawford, Barron, Burnett, Winnebago, and Brown counties. A few specimens of other forms have also been recovered. _Crescents._ (_See Figs. 611, 613, 614._) In this class of copper ornaments are at present included a number of thin, flattish objects, the basis of all of which appears to be the crescent, either plain or variously modified by the addition of prongs or other prolongations arising from the inner or upper edge, near the middle or extremities. There is probably little doubt that the greater number of the objects included in this class were worn by our primitive Indians as breast ornaments, being fastened to the neck by means of cords. In this way several of them may have been worn, one below the other. The adaptability of certain of the pronged forms for use as hair ornaments is noticeable.