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Rh a beauty, each yielding a charm, but each accretion rendering the analysis more difficult.

Pacciuchelli says:—"The Anio flows into the Tiber; pure as crystal it meets the tawny stream, and is lost in it, so that there is no more Anio, but the united stream is all Tiber." So is it with each tributary to the tide of mediæval mythology. The moment it has blended its waters with the great and onward rolling flood, it is impossible to detect it with certainty; it has swollen the stream, but has lost its own identity. If we would analyse a particular myth, we must not go at once to the body of mediæval superstition, but strike at one of the tributaries before its absorption. This we shall proceed to do, and in selecting Norse mythology, we come upon abundant material, pointing naturally to the spot whence it has been derived, as glacial moraines indicate the direction which they have taken, and point to the mountains whence they have fallen. It will not be difficult for us to arrive at the origin of the Northern belief in were-wolves, and the data thus obtained will be useful in assisting us to elucidate much that would otherwise prove obscure in mediæval tradition.

Among the old Norse, it was the custom for certain warriors to dress in the skins of the beasts they had