Teutonic Mythology Vol.1

Already at the beginning of the Christian era the name Germans was applied by the Romans and Gauls to the many clans of people whose main habitation was the extensive territory east of the Rhine, and north of the forest-clad Hercynian Mountains. That these clans constituted one race was evident to the Romans, for they all had a striking similarity in type of body; moreover, a closer acquaintance revealed that their numerous dialects were all variations of the same parent language, and finally, they resembled each other in customs, traditions, and religion. The characteristic features of the physical type of the Germans were light hair, blue eyes, light complexion, and tallness of stature as compared with the Romans...

(Ingram)