In Britain, Celtic speech was introduced in two successive waves, first by the Goidels or “Q” Celts, who apparently appeared about 800 B. C. and this form exists to this day as Erse in western Ireland, as Manx of the Isle of Man and as Gaelic in the Scottish Highlands. The Goidels were still in a state of bronze culture. When they reached Britain they must have found there a population preponderantly of Mediterranean type with numerous remains of still earlier races of Paleolithic times and also some round skulled Alpines of the Round Barrows, who have since largely faded from the living population. When the next invasion, the Cymric or Brythonic, occurred the Goidels had been absorbed very largely by the underlying Mediterranean aborigines who had meanwhile accepted the Goidelic form of Celtic speech, just as on the continent the Gauls had mixed with Alpine and Mediterranean natives and had imposed upon the conquered their own tongue. In fact, in Britain, Gaul and Spain the Goidels and Gauls were chiefly a ruling, military class, while the great bulk of the population remained unchanged although Aryanized in speech. These Brythonic or Cymric tribes or “P” Celts followed the “Q” Celts four or five hundred years later, and drove the Goidels westward through Germany, Gaul and Britain and this movement of population was still going on when Cæsar crossed the Channel. The Brythonic group gave rise to the modern Cornish, extinct within a century, the Cymric of Wales and the Armorican of Brittany. In central Europe we find traces of these same two forms of Celtic speech with the Goidelic everywhere the older and the Cymric the more recent arrival. The cleavage between the dialects of the “Q” Celts and the “P” Celts was probably less marked two thousand years ago than at present, since in their modern form they are both Neo-Celtic languages. What vestiges of Celtic languages remain in France belong to Brythonic. Celtic was not generally spoken in Aquitaine in Cæsar’s time. When the two Celtic-speaking races came into conflict in Britain their original relationship had been greatly obscured by the crossing of the Goidels with the underlying dark Mediterranean race of Neolithic culture and by the mixture of the Belgæ with Teutonic tribes. The result was that the Brythons did not distinguish between the blond Goidels and the brunet but Celticized Mediterraneans as they all spoke Goidelic dialects.