A hole was drilled through the length of the cylinder, and through this a string was passed. Instead of the string a rod of metal or ivory was often employed; this was fixed in a frame of gold or bronze, and the cylinder was thus able to turn upon it. When the seal was used it was rolled over the soft clay, leaving an indelible impression behind. Among the objects found at Tello are balls of clay, which were attached to papyrus documents, like the seals of mediæval deeds, and sealed with the cylinders of the post-masters of Sargon and Naram-Sin. Above the seal comes the address, in one case to Naram-Sin, in another to the high-priest of Lagas. It is evident that a postal system had already been established between Lagas and Agade or Akkad, the capital of Sargon’s empire. The impressions show that the seals must have been very beautiful specimens of workmanship. They all belonged to high officials; one to Dada, “the seer of the palace,” another to the high-priest of Lagas himself. Great attention was paid to the hair of the head and beard. But this was more especially the case among the Semites, who were a bearded race. The older Sumerian population had but little hair upon the face, and to the last the typical Babylonian was distinguished from the Assyrian by the greater absence of beard. The result was that while the Semite encouraged his hair to grow, the Sumerian shaved it except in the case of old men. Most of the Sumerian heads which have been discovered in the excavations of Tello have smooth faces and shorn heads. The figures represented on the so-called Stela of the Vultures, one of the earliest examples of Chaldean art, are without beards, and on the early seal-cylinders the gods alone, as a rule, are permitted to wear them. We are reminded of the Egyptian custom which forbade the beard except to the King and the god. The barber, in fact, occupied an important position in ancient Babylonia, and the old Sumerian code of laws enjoins that a son who denies his father shall be shorn and sold as a slave. With the rise of Semitic supremacy, however, there is a great change. Naram-Sin, in the bas-relief of Diarbekr, wears beard and whiskers and mustache like the Assyrians of a later day, and like them also his hair is artificially curled, though to a lesser extent. The same long beard also distinguishes Khammurabi in a piece of sculpture in which he is entitled “the king of the land of the Amorites.” The gods, too, now assume a mustache as well as a beard and take upon them a Semitic character.