Note 177 — Chapter VI · SUPERNATURAL ELEMENTS IN THE HEROIC STORIES.
Reading edition
Cf. especially Yngl. S. 6: Othin's men went to battle without mail-coats and were frenzied like dogs or wolves. They bit into their shields and were as strong as bears or bulls. They made slaughter of other men; but neither fire nor iron took effect upon them. This is called berserksgangr.