At an early period in the Early Agricultural Age and before bronze working was introduced, England and Wales, Scotland and Ireland, were influenced more directly than had hitherto been the case by the high civilizations of Egypt and Mesopotamia, and especially by their colonies in South-western Europe. The recent Spanish finds indicate that a great "wave" of high Oriental culture was in motion in Spain as far back as 2500 b.c., and perhaps at an even earlier period. Included among Babylonian and Egyptian relics in Spain are, as has been stated, jet from Whitby, Yorkshire, and amber from the Baltic. Apparently the colonists had trading relations with Britain. Whether the "Tin Land", which was occupied by a people owing allegiance to Sargon of Akkad, was ancient Britain is quite uncertain. It was more probably some part of Western Europe. That Western European influence was reaching Britain before the last land movement had ceased is made evident by the fact that the ancient boat with a cork plug, which was found in Clyde silt at Glasgow, lay 25 feet above the present sea-level. The cork plug undoubtedly came from Spain or Italy, and the boat is of Mediterranean type.[199] It is evident that long before the introduction of bronze working the coasts of Britain were being explored by enterprizing prospectors, and that the virgin riches of our native land were being exploited. In this connection it is of importance to find that the earliest metal artifacts introduced into our native islands were brought by traders, and that those that reached England were mainly of Gaulish type, while those that reached Ireland were Spanish. The Neolithic industry does not appear to have been widespread in Ireland, where copper artifacts were in use at a very early period.

A large battle-axe of pure copper, described by Sir David Brewster in 1822 (Edinburgh Philosophical Journal, Vol. VI, p. 357), was found at a depth of 20 feet in Ratho Bog, near Edinburgh. Above it were 9 feet of moss, 7 feet of sand, and 4 feet of hard black till-clay. "It must have been deposited along with the blue clay", wrote Brewster, "prior to the formation of the superincumbent stratum of sand, and must have existed before the diluvial operations by which that stratum was formed. This opinion of its antiquity is strongly confirmed by the peculiarity of its shape, and the nature of its composition." The Spanish discoveries have revived interest in this important find.

As has been indicated, jet, pearls, gold, and tin appear to have been searched for and found before bronze working became a British industry. That the early prospectors had experience in locating and working metals before they reached this country there can be little doubt. There was a psychological motive for their adventurous voyages to unknown lands. The distribution of the megalithic monuments and graves indicates that metals were found and worked in south-western England, in Wales, in Derbyshire, and Cumberland, that jet was worked at Whitby, and that metals were located in Ireland and Scotland. Gold must have been widely distributed during the period of the great thaw. It is unlikely that traces of alluvial gold, which had been located and well worked in ancient times, should remain until the present time. In Scotland no traces of gold can now be found in a number of districts where, according to the records, it was worked as late as the fifteenth and sixteenth centuries. Some of the surviving Scottish megalithic monuments may mark the sites of ancient goldfields that were abandoned in early times when the supplies of precious metal became exhausted. The great circles of Callernish in Lewis and Stennis in Orkney are records of activity in semi-barren areas. Large communities could not have been attracted to these outlying islands to live on the produce of land or sea. Traces of metals, &c., indicate that, in both areas in ancient times, the builders of megalithic monuments settled in remote areas in Britain for the same reason as they settled on parts of the Continent. A gold rod has been discovered in association with the "Druid Temple" at Leys, near Inverness. The Inverness group of circles may well have been those of gold-seekers. In Aberdeenshire a group of megalithic monuments appears to have been erected by searchers for pearls. Gold was found in this county in the time of the Stuart kings.

The close association of megalithic monuments with ancient mine workings makes it impossible to resist the conclusion that the worship of trees and wells was closely connected with the religion of which the megalithic monuments are records. Siret shows that the symbolic markings on typical stone monuments are identical with those of the tree cult. Folk-lore and philological data tend to support this view. From the root nem are derived the Celtic names of the pearl, heaven, the grove, and the shrine within the grove (see [Chap. XIII]). The Celts appear to have embraced the Druidic system of the earlier Iberians in Western Europe, whose culture had been derived from that of the Oriental colonists.

The Oriental mother goddess was connected with the sacred tree, with gold and gems, with pearls, with rivers, lakes, and the sea, with the sky and with the heavenly bodies, long centuries before the Palm-tree cult was introduced into Spain by Oriental colonists. The symbolism of pearls links with that of jet, the symbolism of jet with that of Baltic amber, and the symbolism of Baltic amber with that of Adriatic amber and of Mediterranean coral. All these sacred things were supposed to contain, like jasper and turquoise in Egypt, the "life substance" of the mother goddess who had her origin in water and her dwelling in a tree, and was connected with the sky and "the waters above the firmament". Coral was supposed to be her sea tree, and jet, amber, silver, and gold were supposed to grow from her fertilizing tears. Beliefs about "grown gold" were quite rife in mediæval Britain.[200]

It should not surprise us, therefore, to find traces of Oriental religious conceptions in ancient Britain and Ireland. These have apparently passed from country to country, from people to people, from language to language, and down the Ages without suffering great change. Even when mixed with ideas imported from other areas, they have preserved their original fundamental significance. The Hebridean "maiden-queen" goddess, who dwells in a tree and provides milk from a sea-shell, has a history rooted in a distant area of origin, where the goddess who personified the life-giving shell was connected with the cow and the sky (the Milky Way), as was the goddess Hathor, the Egyptian Aphrodite. The tendency to locate imported religious beliefs no doubt provides the reason why the original palm tree of the goddess was replaced in Britain by the hazel, the elm, the rowan, the apple tree, the oak, &c.

On the Continent there were displacements of peoples after the introduction of bronze, and especially of bronze weapons. There was wealth and there was trade to attract and reward the conqueror. The Eastern traders of Spain were displaced. Some appear to have migrated into Gaul and North Italy; others may have found refuge in Ireland and Britain. The sea-routes were not, however, closed. Ægean culture filtered into Western Europe from Crete, and through the Hallstatt culture centre from the Danubian area. The culture of the tribes who spoke Celtic dialects was veined with Ægean and Asiatic influences. In time Continental Druidism imbibed ideas regarding the Transmigration of Souls and the custom of cremation from an area in the East which had influenced the Aryan invaders of India.

The origin of the Celts is obscure. Greek writers refer to them as a tall, fair people. They were evidently a branch of the fair Northern race, but whether they came from Northern Europe or Northern Asia is uncertain. In Western Europe they intruded themselves as conquerors and formed military aristocracies. Like other vigorous, intruding minorities elsewhere and at different periods, they were in certain localities absorbed by the conquered. In Western Europe they were fused with Iberian communities, and confederacies of Celtiberians came into existence.

Before the great Celtic movements into Western Europe began—that is, before 500 b.c.—Britain was invaded by a broad-headed people, but it is uncertain whether they came as conquerors or as peaceful traders. In time these intruders were absorbed. The evidence afforded by burial customs and surviving traces of ancient religious beliefs and practices tends to show that the culture of the earlier peoples survived over large tracts of our native land. An intellectual conquest of conquerors or intruders was effected by the indigenous population which was rooted to the soil by agriculture and to centres of industry and trade by undisturbed habits of life.

Although the pre-Celtic languages were ultimately displaced by the Celtic—it is uncertain when this process was completed—the influence of ancient Oriental culture remained. In Scotland the pig-taboo, with its history rooted in ancient Egypt, has had tardy survival until our own times. It has no connection with Celtic culture, for the Continental Celts were a pig-rearing and pork-eating people, like the Ægæan invaders of Greece. The pig-taboo is still as prevalent in Northern Arcadia as in the Scottish Highlands, where the descendants not only of the ancient Iberians but of intruders from pork-loving Ireland and Scandinavia have acquired the ancient prejudice and are now perpetuating it.