See also Fairies, elves
"I now went over to the tree I mentioned. It was an oak, with a mighty trunk and far-flung branches, for it was very old. I knew that a living spirit must live in it, a dryad as she is called, who is born when the tree is born, and dies when it dies. I had heard of this in the library, and now I saw such a tree with such an oak maiden. She shrieked frightfully when she saw me so near her, for like other women she is terribly afraid of mice. But she had more reason to fear me than the others have, because I might have gnawed through the bark of the tree on which her life depended.