http://en.wikipedia.org/wiki/Black_Irish
Quote:
In a statistical survey of the Irish carried out by Mr. C. Wesley Dupertuis in the 1940s under the endorsement and guidance of The Division of Anthropology of Harvard University, based on some 10,000 adult males, the following information was gathered and so documented.[16]
The hair color of the Irish is predominantly brown. Less than 3% have black or ashen hair; 40% have dark brown hair. Medium brown hues make up another 35%. Persons with blond and light brown hair account for close to 15%, while approximately 10% have auburn or red hair. Both golden and dark brown shades can be seen in the southwestern counties of Ireland, but fairest hair in general is most common in the Central Plain.[17] Ulster has been evidenced to have the highest frequencies of red hair with the lowest found in Wexford and Waterford.
In further examining pigmentation characteristics (both as a whole and regionally), studies have indicated the Irish are "almost uniquely pale skinned when unexposed, untanned parts of the body, are observed" and "40% of the entire group are freckled to some extent". Moreover, "in the proportion of pure light eyes", data shows that "Ireland competes successfully with the blondest regions of Scandinavia", as approximately 42% of the Irish population have pure blue eyes. Another 30% have been found to possess light-mixed eyes and "less than 1 half of 1% have pure brown".
The complete results of this survey have been condensed and arranged in the Harvard Anthropometric Laboratory (formerly under the close supervision of Professor Earnest A. Hooton) with the cooperation of both governments in Ireland.
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