The Natural History Museum of Cambridge, Massachusetts, which owes its existence to the indefatigable zeal of the lamented Professor Agassiz, is enriched by a collection of remains of the ancient Swiss Lake-dwellers, obtained under peculiarly favourable circumstances. The father of the distinguished naturalist was for a period of fifteen years the clergyman of Concise; and it chanced that the son revisited his native canton at a time when the construction of a railway viaduct across part of the neighbouring lake led to the discovery of numerous traces of its ancient population. He was accordingly able to secure a choice collection illustrative of aboriginal arts, including some characteristic specimens of horn and bone implements, from which some illustrative examples are here selected. Fig. 46 may be described as a chisel made of a hog’s tooth inserted in a haft of deer’s-horn, precisely after a fashion familiar to the Red Indian, of converting the incisor of the beaver into a useful cutting tool. The same collection includes knives, daggers, bodkins, or awls, made of bone or ivory, and hafted in like manner with horn; as well as implements of flint and stone hereafter referred to.[52] [Illustration: FIG. 46.—Hog’s Tooth Chisel, Concise.] Among the tools and personal ornaments wrought of mammoth ivory, which Dean Buckland describes as found in the Goat Hole Cavern at Paviland, is a skewer made of the metacarpal bone of a wolf, flattened at the edge at one end, and terminated at the other by the natural rounded condyle of the bone. Implements of this type are by no means rare. The original disclosures of Kent’s Cavern included arrow and lance-heads, bodkins, pins, hair-combs, netting-tools, and other implements, all made of bone. Similar objects have been repeatedly found in Scottish weems and brochs, and in the kitchen-middens of Britain, Denmark, and other European accumulations of the like kind. Fig. 47 represents a group of such objects, chiefly from one of the primitive subterranean dwellings, at Skara, in Orkney. It includes a small perforated ivory pin, and a bodkin made after the fashion of the Goat Hole wolf-bone implement from the metatarsal bone of a small ox. Implements of this simple character are common to the arts of many periods and states of society; and like the flint and stone implements of nearly every age and country, help to illustrate the tool-making instinct peculiar to man. [Illustration: FIG. 47.—British Bone Implements.]