Again, the view that a Celtic-speaking people invaded Britain at the close of the Neolithic or the beginning of the Bronze Age implies that Celtic and Latin, the nearest of kin in the Aryan family of languages, had become differentiated long before the Neolithic Age came to its end. Would any philologist who knew the rudiments of archaeology sanction a theory so preposterous?[1950]
The foregoing arguments apply equally to the short men whose remains have been found in the greatest purity in North-Eastern Scotland. The race to which they belonged began to arrive in Gaul very early in the Neolithic Age:[1951] they themselves landed in Britain before its close. Whoever they may have been, they were neither Goidels nor Belgae nor Brythons of any tribe.
Finally, although I am aware that I am about to tread upon thorny ground, I affirm that there is not the slightest reason to doubt that the Celtic invaders of Britain, in so far as they were descended from the Celtic-speaking people who conquered Gaul, were not a brachycephalic but a dolichocephalic or mesaticephalic people. I have already argued in favour of this thesis in a dissertation on ‘the Ethnology of Gaul’,[1952] and I will now adduce fresh evidence in its favour. But first let me make my meaning perfectly clear. I do not mean that the Celtic invaders of Britain were all of the same type. On the contrary, I assume that the dominant race had intermixed and intermarried, before they embarked from the Continent, with descendants of the neolithic stocks. I do not mean that even the invaders who introduced the Celtic language into Gaul, even those who beat the Romans on the Allia, were homogeneous. Dr. Beddoe, as I have remarked elsewhere,[1953] warns us not to believe that there was ever a period when, for example, all the Caledonians were red-haired. I only mean that among the Celtic-speaking conquerors of Britain dolichocephaly, as well as tallness and fairness, was a prevailing characteristic.
Thurnam[1954] asserted that ‘we may ask in vain for a series of ancient dolichocephalic skulls which, on satisfactory archaeological grounds, can be assigned to the immediately pre-Roman, and therefore to the Celtic period, either in England or in France’. Let us consider England first. Now it happens that the skulls of the ‘Late Celtic’ period, or Early Iron Age, which have been found in this country are almost all either dolichocephalic or mesaticephalic.[1955] Canon Greenwell,[1956] it is true, explains this fact by the assumption that ‘the intruding round-headed people ... were gradually absorbed by the earlier and more numerous [Long Barrow] race’. ‘In this way,’ he says, ‘it appears to me that we may account for the skull type of the Early Iron Age without the necessity of requiring any immigration into Britain or its conquest after the time of the presumed occupation by the bronze-using round-headed people,’ &c. But that necessity is imperative. Had Canon Greenwell momentarily forgotten his Caesar? The immigration of the Belgae took place, at the earliest, in the third century B.C., many centuries after the ‘occupation by the bronze-using round-headed people’. It is true that some of the British skulls which belong to the Late Celtic period are of the same type as those of the Long Barrow race:[1957] but this only proves that the Long Barrow race survived; and others are of a type which, as Rolleston says, is ‘entirely wanting ... in the series from the long barrows’.[1958] Unfortunately, however, the Late Celtic skulls which have been found in Britain are comparatively few;[1959] and hardly any of them can be assigned with certainty to the Brythonic invaders.