From the fact that the broken lumps of clay were found at Tello, it is clear that the sealed bundles had been despatched thither from Akkad, and we have in them incontestable evidence of a service of convoys between Akkad and Lagash, under the direct control of the king's officers. We may note that in addition to the seal-impressions several of the clay fragments were inscribed in a cursive hand with the name of an official, or private person, for whom the sealed packet was intended. Thus a sealed bundle from the grand vizir was addressed "To Alla," that from Dada, the magician, "To Lugal-ushumgal," whose name occurs in the seal on other fragments; while one sent in Narâm-Sin's reign appears to have been addressed simply "To Lagash," indicating the packet's place of destination. Apart from the fact that, with the exception of Lugal-ushumgal, the high court-officials mentioned on the seals would naturally be living in Akkad, not in Lagash, the addresses on the different fragments, particularly the one last referred to, definitely prove that the sealings were employed on bundles actually despatched from city to city and not stored in any archive or repository. It is therefore certain that, during the reigns of Shar-Gani-sharri and Narâm-Sin, a regular system of communication was kept up between Lagash and the court, and it may legitimately be inferred that the capital was linked up in a similar way to the other great cities of the empire. In addition to the system of official convoys, the commercial tablets of this period that have been found at Tello bear witness to an active interchange of goods and produce between Lagash, Akkad, and other cities in the empire.[60] Thus in some we read of the despatch of gold to Akkad, or of herds of oxen, or flocks of sheep, lambs and goats. In return we find Akkad sent grain and dates southwards, and probably garments and woven stuffs; the importance of the first two exports is indicated by the frequent occurrence of the expressions "grain of Akkad" and "dates of Akkad" in the commercial texts. Moreover, a study of the proper names occurring on the tablets suggests that, in consequence of these commercial relations, a considerable Semitic immigration now took place from Akkad and the north. Among southern Sumerian cities Erech and Umma, Ninni-esh and Adab had particularly close relations with Lagash, while goods despatched from Kish, Nippur, and Ur are invoiced in the lists. The conquests of Shar-Gani-sharri and Narâm-Sin were also reflected in the articles of commerce that reached the market of Lagash, where contributions from Magan, Melukhkha, and Elam were not infrequently met with, and we even find the sale of slaves from such distant countries as Gutiu and Amurru recorded. To regulate the trade relations between the different cities, and to instruct his local officials on details of their administration, it is probable that the kings of Akkad, like those of the First Dynasty of Babylon, wrote