However, another element, besides the village-community principle, was required to give to these growing centres of liberty and enlightenment the unity of thought and action, and the powers of initiative, which made their force in the twelfth and thirteenth centuries. With the growing diversity of occupations, crafts and arts, and with the growing commerce in distant lands, some new form of union was required, and this necessary new element was supplied by the guilds. Volumes and volumes have been written about these unions which, under the name of guilds, brotherhoods, friendships and druzhestva, minne, artels in Russia, esnaifs in Servia and Turkey, amkari in Georgia, and so on, took such a formidable development in medieval times and played such an important part in the emancipation of the cities. But it took historians more than sixty years before the universality of this institution and its true characters were understood. Only now, when hundreds of guild statutes have been published and studied, and their relationship to the Roman collegiae, and the earlier unions in Greece and in India,(25) is known, can we maintain with full confidence that these brotherhoods were but a further development of the same principles which we saw at work in the gens and the village community. Nothing illustrates better these medieval brother hoods than those temporary guilds which were formed on board ships. When a ship of the Hansa had accomplished her first half-day passage after having left the port, the captain (Schiffer) gathered all crew and passengers on the deck, and held the following language, as reported by a contemporary:-- "'As we are now at the mercy of God and the waves,' he said, 'each one must be equal to each other. And as we are surrounded by storms, high waves, pirates and other dangers, we must keep a strict order that we may bring our voyage to a good end. That is why we shall pronounce the prayer for a good wind and good success, and, according to marine law, we shall name the occupiers of the judges' seats (Schoffenstellen).' Thereupon the crew elected a Vogt and four scabini, to act as their judges. At the end of the voyage the Vogt and the scabini abdicated their functions and addressed the crew as follows:--'What has happened on board ship, we must pardon to each other and consider as dead (todt und ab sein lassen). What we have judged right, was for the sake of justice. This is why we beg you all, in the name of honest justice, to forget all the animosity one may nourish against another, and to swear on bread and salt that he will not think of it in a bad spirit. If any one, however, considers himself wronged, he must appeal to the land Vogt and ask justice from him before sunset.' On landing, the Stock with the fredfines was handed over to the Vogt of the sea-port for distribution among the poor."(26)