“(…)we find that the upper facial index, the mean of which is 54.3 for the entire nation, shows regional differences, being consistently higher in the north and lower in the south. Two peaks at 49 and 54 are clearly differentiated, and the former is the larger. In most of Portugal the leptene tendency is associated with relatively great dolichocephaly, but in the coastal regions of the north, in Entre Douro and Minho, a leptene face is associated with brachycephaly and tall stature, indicating that in this region there is evidence of a submerged Dinaric element which may, presumably, be attributed to the early metal age invasions.”
“the Keltic invasions affected only the north, as did the inroads of the Germans."
“Blue eyes run to 13 per cent in the north, and as low as 1 and 2 per cent in the south”
“The most dolichocephalic local groups live in the northwestern part of the country.”