“…The graph suggests that a rise in female values with age occurs only after the menopause. In Caucasian populations a slight fall in mean female values from the third to the fourth decades has been observed (Mikkelsen, Dodge, and Valkenburg, 1965;Popert and Hewitt, 1962), which was not seen in either ofthe Polynesian groups, nor in a group of New Zealand Maoris studied previously (Prior, Rose, and Davidson, 1964). It is possible that this feature has been obscured by inaccuracy in the reported ages of the Polynesians.…”