The same argument could, however, be brought with equal force against their use for any of the other purposes suggested. The perforations, if not used for suspension or attachment, would be subject to wear from any other use to which they could be put. But, as we have already seen, one of the specimens in shell exhibits well-defined evidence of wear, and that of such a character as to indicate the passage of a cord between the perforations in a position that would produce abrasion between the holes on the concave side of the plate, but would leave the back entirely unworn. This peculiar result could only be produced by attachment in a fixed position, concave side out, to some object perforated like the plate, the cord passing directly through both. The perforations of pendants necessarily show wear on both sides; a like result would follow from the use of these plates in any of the other ways mentioned. Those made of shell could not, on account of their warped shape, be used for shuttles; besides, they show no evidence of marginal wear, such as would result from this use. The fact, too, that the material had to be brought from the distant sea-shore would seem to render it too rare and precious to be employed in the ordinary arts when wood, stone, and bone would serve the purpose as well. Owing to the carelessness or negligence of collectors we have but little information in regard to their relation to the human remains with which they were deposited. Such facts as we have, however, tend, I believe, to show that they were used for personal decoration. Again, the material of which they are formed is, on account of its beauty, especially adapted for ornament, and for this use it has been almost exclusively reserved by peoples as distant from the sea as were the ancient peoples of the Ohio Valley. ENGRAVED GORGETS.