On the theory of the introduction of metallurgic arts assumed here, not altogether without evidence, it is not requisite that we should conceive of the aboriginal Caledonians disturbed by the invasion of foreign tribes armed with weapons scarcely less strange to them than those with which the Spanish discoverers astonished the simple natives of the New World. The changes, however, already noted in the forms and modes of sepulture, the abandonment of the long barrow, the introduction of cremation, of the sitting or folded posture of the dead with the correspondingly abbreviated cist, and of a uniform and defined direction of laying the dead, are all suggestive of the probable intrusion of new races in earlier as well as in later times. The facilities afforded by the more pliable metal tools would speedily work no less remarkable changes on the mansions of the living than on the sepulchres of the dead. The subterranean weem would give place to the wooden structure, which the new arts rendered at once a more convenient and simpler style of architecture; while the inroads on the forests which such changes led to would necessitate the clearing of the neighbouring lands preparatory to the extended labours of the agriculturist. To the same cause also we may probably trace the origin of many of those extensive tracts of bog and peat-moss which still encumber the limited level areas of Scotland. The wasteful profusion of the natives of a thinly peopled country would lead to the destruction of the forests with little heed to aught but the supply of their own immediate wants. In the extensive mosses of Kincardine and Blair-Drummond, which have yielded such valuable archæological relics, when the surface of the underlying clay was exposed by the removal of the moss, it was in many places covered with trees, chiefly oak and birch, of a great size. These were found lying in all directions beside their roots, which continued firm in the ground in their natural position; and from impressions still visible it was evident that they had been cut with an axe or some similar instrument.[269] The like discoveries in other Scottish mosses prove their origin from the same wasteful inroads of early times.

The occupants of the country at this period were necessarily isolated tribes and clans, with no common interest, and little peaceful intercourse. The arts were therefore practised as in their primeval dawn described by Milton, when the artist formed

"First his own tools, then what might else be wrought."

Among all the varied primitive relics which have been from time to time discovered, both in Scotland and other countries of northern Europe, none exceed in interest the stone and bronze moulds in which the earliest tools and weapons of the native metallurgist were formed. They have been found in Scotland, England, Ireland, and in the Channel Islands, exhibiting much diversity of form, and various degrees of ingenuity and fitness for the purpose in view. Some of them are of bronze, and highly finished, examples of which from the British Museum are engraved in the Archæological Journal, (vol. iv. p. 336,) in Plate VII. vol. v. of the Archæologia, and elsewhere. If the account, however, furnished by Warburton to Stukely may be relied upon, such objects are by no means rare. According to him, a bushel of celts, each inclosed in a brass mould or case, was found in 1719, at Brough, in the Humber. Mr. Worsaae refers to another example of a number of bronzes found in Mecklenburg, accompanied by the moulds in which they were cast, together with pieces of unwrought metal; and similar bronze celt-moulds have been discovered at various times in different parts of France. In the Museum of the Society of Antiquaries of Scotland there are casts of a pair of large and very perfect bronze celt-moulds, of unusual size and peculiar form, found at Theville, Arrondissement de Cherbourg.

Celt-Moulds, Ross-shire.

But still more interesting are the ruder stone moulds, in some of which we may trace the first efforts of the aborigines of the Stone Period to adapt the materials with which they were familiar to the novel arts of the metallurgist. This is particularly observable in a mould-stone preserved in the Belfast Museum. It is polygonal in form, and exhibits upon four of its surfaces indented moulds for axe-heads of the simplest class. In this example there is no reason to believe that any corresponding half was used to complete the mould. The melted metal was simply poured into the indented surface, and left to take shape by its equilibrium on the exposed surface. Weapons formed in this way may frequently be detected, while others, full of air-holes, and roughly granulated on the surface, appear to have been made in the still simpler mould formed by an indentation in sand. Others of the stone moulds have consisted of pairs, like those of bronze. A very curious example of this description was found a few years since in the Isle of Anglesea, and is engraved in the Archæological Journal.[270] It is a cube of hone-stone, nine inches and a quarter in length, by four inches in breadth at its widest extremity. Each of the four sides is indented for casting different weapons: two varieties of spear, a lance or arrow-head, and a celt with two loops. Only the one stone was found, but another corresponding one is obviously requisite, by means of which four complete moulds would be obtained. At the Congress of the Archæological Institute, held at Salisbury in 1849, the temporary Museum contained a mould of serpentine, found in Dorsetshire, designed for casting spear-heads, and another of granite, found near Amesbury in Wiltshire, intended to cast ornamented celts of two sizes. Of the same class are two pairs of celt-moulds recently discovered in the parish of Rosskeen, Ross-shire. The site of this interesting discovery is about four miles inland, on the north side of the Cromarty Frith, on a moor which the proprietor is reclaiming from the wild waste, and restoring once more to the profitable service of man. In the progress of this good work abundant evidence demonstrated the fact, that the same area from which the accumulated vegetable moss of many centuries is now being removed, had formed the scene of a busy, intelligent, and industrious population ere the first growth of this barren produce indicated its abandonment to solitude and sterility. Near to the spot where the moulds were discovered there stood till recently a large sepulchral cairn; and in forming a road through the moss several cists were exposed containing human bones and cinerary urns. Amid these evidences of ancient population the two pairs of moulds were discovered, at a depth of only sixteen inches from the surface. They are very perfect, and are composed of a hard and very close-grained stone. One pair is notched and perforated through both moulds, so as to admit of their being exactly fitted and tied together for casting. Close to the spot where they were discovered there was also disclosed the remains of a rude inclosure or building of stone, containing a bed of ashes and scoriæ; so that here no doubt had been the forge of the primitive metallurgist, from whence, perhaps, the natives of an extensive district obtained their chief supplies of weapons and tools. These Scottish moulds give evidence both of taste and ingenuity. In one of them is also a matrix for forming a smaller implement, the use of which is not easy to determine, while both the celts are large and elegant in form. The woodcut represents one of the celts cast from the mould, which measures fully five inches long.

Celt-Moulds, Ross-shire.