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.) B. ASIA. In Palestine puberty most commonly occurs at the age of 13; in Turkey even as early as 10. _Rouvier_ calculated the average of 742 cases observed in Syria to be the age of 12. As regards Persian women, the data vary between the age of 14 for the northern part of the country and the age of 9 or 10 for the southern. According to _Joubert’s_ data in 46.4 per cent. of the indigens of India, menstruation begins at the age of 12 or 13. Similar figures are given for Ceylon and for Siam. In Japan menstruation most frequently begins at the age of 14, sometimes as early as 13; mothers of 15 are by no means rarities in this country, but for menstruation to begin before the age of 12 is considered a very exceptional occurrence. According to a table dealing with 584 women of Tokio menstruation began: At the age of: 11 years in 2 instances. 12 years in 2 instances. 13 years in 26 instances. 14 years in 78 instances. 15 years in 224 instances. 16 years in 228 instances. 17 years in 68 instances. 18 years in 44 instances. 19 years in 10 instances. 20 years in 2 instances. The data available regarding China are so exceedingly variable that little importance can be attached to them. C. AFRICA, OCEANIA, AND AMERICA.