and the troll, thus called by his name, lost his strength, fell off, and was dashed into a hundred pieces, all flint stones. (Iduna, Part 3, p. 60 f, note. Other forms of the same story in Afzelius, Sago-Häfder, III, 100 f; Faye, Norske Folke-Sagn, p. 14, 2d ed.; Hofberg, Nerikes Gamla Minnen, p. 234.) It is a Norwegian belief that when a nix assumes the human shape in order to carry some one off, it will be his death if the selected victim recognizes him and names him, and in this way a woman escaped in a ballad. She called out, So you are the Nix, that pestilent beast, and the nix "disappeared in red blood." (Faye, as above, p. 49, note.) A nix is baffled in the same way in a Færoe and an Icelandic ballad cited by Grundtvig, II, 57. The marvellous horse Blak agrees to carry Waldemar [Hildebrand] over a great piece of water for the rescue of his daughter [sister], stipulating, however, that his name shall not be uttered. The rider forgets himself in a panic, calls to the horse by his name, and is thrown off into the water. The horse, whose powers had been supernatural, and who had been _running_ over the water as if it were land, has now only ordinary strength, and is forced to swim. He brings the lady back on the same terms, which she keeps, but when he reaches the land he is bleeding at every hair, and falls dead. (Landstad, 58; Grundtvig, 62; Afzelius, 59, preface; Kristensen, I, No 66.) Klaufi, a berserker, while under the operation of his peculiar fury, loses his strength, and can no longer wield the weapon he was fighting with, upon Gríss's crying out, "Klaufi, Klaufi, be not so mad!" (Svarfdæla Saga, p. 147, and again p. 156 f.) So the blood-thirst of the avenger's sword in the magnificent Danish ballad 'Hævnersværdet' is restrained by naming. (Grundtvig, No 25, st. 35.) Again, men engaged in _hamfarir_, that is in roving about in the shape of beasts, their proper bodies remaining lifeless the while, must not be called by name, for this might compel them to return at once to their own shape, or possibly prevent their ever doing so. (Kristni Saga, ed. 1773, p. 149. R.T. King, in Notes and Queries, 2d Ser., II, 506.) Grundtvig remarks that this belief is akin to what is related in Fáfnismál (prose interpolation after st. 1), that Sigurd concealed his name by reason of a belief in old times that a dying man's word had great power, if he cursed his foe by name. (D.g.F., II, 340.)