314 GRIPLA The Conversion brought a total change of this conceptual system. The Norse gods vanished from the scene, but many other products of Norse belief continued to thrive, and turned into superstition as it was called, as soon as the one true religion had entered the country. The way Víga-Glúrrís saga uses the practice of encircling land with fire is especially arresting. This custom, which had been a legal method of taking possession, one of the links between religion and law, becomes in this narrative a kind of aversion-charm, the cunning contrivance of an old woman safeguarding the interest of her son.34 It is a frequent feature of religious history that various practices of an older religion will, under the new dispensation, become means of sorcery. This is what might have happened here.35 In view of these matters, it is natural that mention of the god Frey falls into the background in Víga-Glúm's saga, and exercises no motive power in the development of the story. Instances of superstition ac- cord better with the range of ideas in the eleventh, twelfth and thir- teenth centuries, and with the state of things confronting people at that time. The fact that traditions of Frey are nevertheless preserved in Víga-Glúm's saga strongly suggests to me that they had at some time played an effective part in traditions about Víga-Glúm. The inner logic of these accounts, where the result follows on the cause, can most plausibly be traced to the tenth century, when Norse religion was a living force and Frey was actively worshipped. This, it seems to me, is a basis for dating the initial formation of traditions in the Sagas of Icelanders all the way back to the tenth century. It is harder to estab- lish just when Frey gave way before the instances of superstition, but I would think that this happened at least to some extent while traditions about Glúm were circulating orally. All the same, it can never be firm- ly decided what changes occurred in oral tradition, or what was there- after the work of the author of Víga-Glúm's saga. There are some references to Frey in the saga of Gísli Súrsson. It is said of the chieftain Þorgrím Porsteinsson, also called Freysgoði (priest of Frey): Þorgrímr ætlaði at hafa haustboð at vetrnóttum ok fagna vetri ok Cf. Dag Strömback, 'Att helga land', p. 150 f. and references where slightly differ- ent view is expressed. 35 Jón Hnefill Aðalsteinsson, Under the Cloak (1978), p. 21 and works there cited.