[Footnote 252: Indeed, the parallel existence of the Flateyar-bok version of Eric the Red's Saga, alongside of the Hauks-bok version, is pretty good proof of the existence of a written account older than Hauk's time. The discrepancies between the two versions are such as to show that Jon Thordharson did not copy from Hauk, but followed some other version not now forthcoming. Jon mentions six voyages in connection with Vinland: 1. Bjarni Herjulfsson; 2. Leif; 3. Thorvald; 4. Thorstein and Gudrid; 5. Thorfinn Karlsefni; 6. Freydis. Hauk, on the other hand, mentions only the two principal voyages, those of Leif and Thorfinn; ignoring Bjarni, he accredits his adventures to Leif on his return voyage from Norway in 999, and he makes Thorvald a comrade of Thorfinn, and mixes his adventures with the events of Thorfinn's voyage. Dr. Storm considers Hauk's account intrinsically the more probable, and thinks that in the Flateyar-bok we have a later amplification of the tradition. But while I agree with Dr. Storm as to the general superiority of the Hauk version, I am not convinced by his arguments on this point. It seems to me likely that the Flateyar-bok here preserves more faithfully the details of an older tradition too summarily epitomized in the Hauks-bok. As the point in no way affects the general conclusions of the present chapter, it is hardly worth arguing here. The main thing for us is that the divergencies between the two versions, when coupled with their agreement in the most important features, indicate that both writers were working upon the basis of an antecedent written tradition, like the authors of the first and third synoptic gospels. Only here, of course, there are in the divergencies no symptoms of what the Tuebingen school would call "_tendenz_," impairing and obscuring to an indeterminate extent the general trustworthiness of the narratives. On the whole, it is pretty clear that Hauks-bok and Flateyar-bok were independent of each other, and collated, each in its own way, earlier documents that have probably since perished.] [Sidenote: Adam of Bremen.]