Cf. Grant, Madison, The Passing of the Great Racep. 74 (New York, 1916): "One often hears the statement made that native Americans of Colonial ancestry are of mixed ethnic origin. This is not true. At the time of the Revolutionary War the settlers in the 13 colonies were not only purely Nordic, but also purely Teutonic, a very large majority being Anglo-Saxon in the most limited meaning of that term. The New England settlers in particular came from those counties in England where the blood was almost purely Saxon, Anglian, and Dane."

Comprising Armenians, Croatians, English, Greeks, Russian Jews, Irish, South Italians, North Italians, Magyars, Poles, Rumanians and Russians, 500 individuals in all.

English data from K. Pearson, Biometrika V, p. 124.

Pearson (ubi supra) measured 12-year-old English school children, and found the average cephalic index for 2298 boys to be 78.88, with σ = 3.2, for 2188 girls 78.43, with σ =  3.9. It is not proper to compare adolescents with adults, however.

Sewall Wright has pointed out (Journal of Heredity, VIII, p. 376) that the white blaze in the hair can not be finally classed as dominant or recessive until the progeny of two affected persons have been seen. All matings so far studied have been between an affected person and a normal. It may be that the white blaze (or piebaldism) represents merely a heterozygous condition, and that the trait is really a recessive. The same argument applies to brachydactyly.