_Observer._ _Place._ _No. of _Average Age._
Cases._
De Soye Paris 1,000 15 years, 0 months.
Dubois Paris 600 15 years, 3 months.
Raciborski Paris 200 14 years, 5 months.
M. Despines Paris 85 14 years, 11 months.
Arau Paris 100 15 years, 4 months.
Courty Montpellier 600 14 years, 3 months.
Puech Nîmes 941 14 years, 2 months.
M. Despines Toulon 43 14 years, 1 month.
M. Despines Marseilles 25 14 years, 1 month.
Puech Toulon 144 14 years, 1 month.
Grey London 1,498 15 years, 6 months.
Lee & Murphy London 1,719 15 years, 6 month
Torisiano Corfu 33 14 years, 6 months.
Lebrun Warsaw 100 15 years, 1 month.
from these observations we obtain an average of 15 years.