King Hakon after this battle made a law, that all inhabited land over the whole country along the sea-coast, and as far back from it as the salmon swims up in the rivers, should be divided into ship-raths according to the districts; and it was fixed by law how many ships there should be from each district, and how great each should be, when the whole people were called out on service. For this outfit the whole inhabitants should be bound whenever a foreign army came to the country. With this came also the order that beacons should be erected upon the hills, so that every man could see from the one to the other; and it is told that a war-signal could thus be given in seven days, from the most southerly beacon to the most northerly Thing-seat in Halogaland 22. CONCERNING EIRIK'S SONS. Eirik's sons plundered much on the Baltic coasts and sometimes, as before related, in Norway; but so long as Hakon ruled over Norway there was in general good peace, and good seasons, and he was the most beloved of kings. When Hakon had reigned about twenty years in Norway (A.D. 954), Eirik's sons came from Denmark with a powerful army, of which a great part consisted of the people who had followed them on their expeditions; but a still greater army of Danes had been placed at their disposal by King Harald Gormson. They sailed with a fair wind from Vendil, and came to Agder; and then sailed northwards, night and day, along the coast. But the beacons were not fired, because it had been usual to look for them lighted from the east onwards, and nobody had observed them from the east coast; and besides King Hakon had set heavy penalties for giving false alarm, by lighting the beacons without occasion. The reason of this was, that ships of war and vikings cruised about and plundered among the outlying islands, and the country people took them for Eirik's sons, and lighted the beacons, and set the whole country in trouble and dread of war. Sometimes, no doubt, the sons of Eirik were there; but having only their own troops, and no Danish army with them, they returned to Denmark; and sometimes these were other vikings. King Hakon was very angry at this, because it cost both trouble and money to no purpose. The bondes also suffered by these false alarms when they were given uselessly; and thus it happened that no news of this expedition of Eirik's sons circulated through the land until they had come as far north as Ulfasund, where they lay for seven days. Then spies set off across Eid and northwards to More. King Hakon was at that time in the island Frede, in North More, at a place called Birkistrand, where he had a dwelling-house, and had no troops with him, only his bodyguard or court, and the neighbouring bondes he had invited to his house. 23. OF EGIL ULSERK.