alently dolichocephalic. In Neolithic Britain and in Scandinavia the earliest barrows (= tomb mounds) are long grave-shaped barrows and the late ones round, and the skulls found in the former are usually dolichocephalic and in the latter most frequently brachycephalic. This points perhaps to a succession of races in western Europe in the Neolithic Period (see Chapter XLV), but it may also point to changes of diet, habit, or climate.

But it is this study of skull shapes which has led many ethnologists to divide the Caucasian race, not, as it was divided by Huxley, into two, the northern blonds and the Mediterranean and North African dark whites or brunets, but into three. They split his blonds into two classes. They distinguish a northern European type, blond and dolichocephalic, the Nordic; a Mediterranean or Iberian race, Huxley's dark whites,