(M167) It is suggested that in the continuity of city life from an earlier stage of society under some form of the Tribal System, can be found the only natural explanation of the structure of the kindred at Athens in the fourth and fifth centuries B.C. Comparison with the customs of other nations,—the Hindoos, the Welsh, and the Israelites, the last two being the most typical examples of peoples of which we have written records whilst still living under the tribal system—has shown remarkable analogies in the organisation of their inner society. (M168) The actual similarity in the sentiment which surrounded the possession of the privileges of tribal blood and the title to citizenship at Athens, can hardly be exaggerated. (M169) The foundation of the bond in either case has a threefold aspect. The bond is one of blood, of religion, and of maintenance. (M170) The qualification for citizenship, as much as for the tribal privilege, was a question of parentage; and the citizen equally inherited, with his blood, responsibilities towards the community into which he was born, as to a larger kindred. (M171) Membership of the tribe or of the city was the only qualification, that admitted to the privilege and duty of partaking in the public religious observances. Tribesmen and citizens, by virtue of their privilege, shared in the worship of the greater gods, of Hestia in the Prytaneum, of Zeus Agoraios, and of the Heroes or special guardians of their community; in like manner as the member of the smaller group of a kindred, by virtue of his blood, shared in the worship of the Apollo Patroïos, the Zeus Herkeios or Ktesios, and the heroes or ancestors of his family. Inasmuch as citizenship depended upon purity of descent, the possession of the latter qualification carried with it the right to share in the greater ceremonies. But the converse was equally stringent, in that the possession of shrines of Apollo Patroïos and Zeus Herkeios was impossible, unless the family was one of those who had for many generations been recognised as belonging to the true stock of the community.