In Southern Europe the influence of the higher mean temperature
manifests itself. The average age at which Spanish girls begin to
menstruate is 12. In Northern and Middle Italy the most frequent age is
14; in Southern Italy, 13. In Lyons the average age at which
menstruation begins is 14 years, 5 months, and 29 days; in Marseilles
and Toulon it is 13 years and 10 months. For Hungary, _Doktor_ gives the
statistics of 9,600 cases. In 22⅓ per cent. menstruation began at the
age of 15; in 20½ per cent. at the age of 16, and in 10 per cent. at the
age of 17. The earliest age among these cases was 8 years; the latest,
33 years. (The latter must no doubt be regarded as pathological.)