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The hair-colours of an unselected Vienese sample (8399 male, 8176 female) of all ages and ascertained by the author himself have been analysed with regard to their sexual distribution. The comparisons of the age-groups necessary because of the individual age-changes of the hair-colour did not reveal any significant sexual dimorphism. Only during the periods of intensified growth the girls show a slight tendency to darker hair than the boys at the same age because of their faster development.
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