There is another class of relics, however, which we can feel no hesitation in ranking among the earliest remains of the Stone Period, though it may sometimes be difficult to determine whether we should regard them as mere personal ornaments or as charms employed in the mysterious rites of Pagan superstition, as it is not uncommon to find them used, at a very recent date, by their illiterate inheritors in some of the remoter districts of the Highlands and Isles. One relic, for example, in the Scottish Museum, consists of a flat reddish stone, roughly polished. It measures 4 inches in length, and about 2¾ inches in its greatest breadth, and is notched in a regular form, with two holes perforated through it. It was presented to the Society of Scottish Antiquaries in 1784, as a charm in use among the population of the island of Islay for the cure of diseases. From its correspondence with others of the earliest class of relics, it can hardly admit of a doubt that it belongs to the personal ornaments of the Stone Period, and may have owed the reverence of its more recent possessor to the fact of its discovery within some primitive cist, or in the charmed circle of Taoursanan, the origin of which is commonly ascribed to superhuman powers. It is worthy of note, indeed, that the word _Druidheachd_ is no longer associated with the priesthood of the British groves, but is now only used by the Scottish Highlanders as applicable to sorcery or magic. Another, but much less perfect ornament of perforated reddish stone, in the same collection with the above, was found, along with several flint arrow-heads, in the island of Harris; and a third, still ruder, was discovered, with a similar arrow-head, on the Lomond Hills of Fifeshire. But perhaps the most singular relics of the Stone Period ever discovered in Scotland are two stone collars, found near the celebrated Parallel Roads of Glenroy, and now preserved at the mansion of Tonley, Aberdeenshire. They are each of the full size of a collar adapted to a small Highland horse; the one formed of trap or whinstone, and the other of a fine-grained red granite. They are not, however, to be regarded as the primitive substitutes for the more convenient materials of later introduction. On the contrary, a close imitation of the details of a horse collar of common materials is attempted, including the folds of the leather, nails, buckles, and holes for tying particular parts together. They are finished with much care and a high degree of polish, and are described as obviously the workmanship of a skilful artist. Mr. Skene, who first drew attention to these remarkable relics, suggests the probability of the peculiar natural features of Glenroy having led to the selection of this amphitheatre for the scene of ancient public games; and that these stone collars might commemorate the victor in the chariot race, as the tripods still existing record the victor in the Choragic games of Athens.