It cannot admit of doubt that bone and horn continued to supply the absence of metallic weapons to the very close of the Stone Period. Nevertheless it suggests the probable antiquity of the examples referred to, that notwithstanding the great susceptibility of the material for receiving ornament, they present so few of those incised decorations common not only on the sepulchral pottery, but on the pateræ, bead-stones, and other relics formed of the hardest materials. [Illustration] One of the most interesting recent discoveries of this primitive class of implements was made by Mr. G. Petrie, during his exploration of a subterranean dwelling or weem at Skara, in the Bay of Scales, Sandwich. A large accumulation of ashes, bones of domestic animals, the tusks of a very large wild boar, scales of fish, &c., indicated the refuse of many repasts of its aboriginal occupants; and alongside of it, apparently in coeval rubbish, was found a stone cist, containing, among other remains, about two dozen oyster shells, each perforated with a hole large enough to admit the finger. Perchance they supplied to their simple owner a collar not less esteemed than the most coveted orders of a modern peer. A curious variety of bone implements were discovered at the same time. The larger of the two objects in the annexed woodcut represents a pin or bodkin, formed from the left metatarsal bone of an ox of small size, in which the natural form of the joint has been turned to account for forming its head. It measures 5-3/10 inches long. The smaller object is also of bone. One side of the head is broken away, but the perforation has not been in the centre; it measures 3½ inches in length. Others of the tools are still more simple--mere flat pieces of bone, roughly rubbed to an edge, and indicating the merest rudiments of art and contrivance. Two other examples from the same hoard are represented here, the smallest another pin, 2⅘ inches long, formed from the lower end of the metatarsal bone of a sheep, and the larger, perhaps intended as the handle of some implement of delicate structure. It appears to be fashioned from the metatarsal or metacarpal bone of a lamb, and is notched with a rude attempt at ornament, which, however, as in the dagger formerly described, must have greatly impaired its strength.[183] Along with these were also found a number of circular discs of slate, about half an inch thick, roughly chipped into shape, and about the size of a common dessert plate. The most ready idea that can be formed of them is, that they were actually designed for a similar purpose. [Illustration]