The Spirit in the Blue Light

Do you know the Aarne-Thompson-Uther Index, a classification system for European folktales? It was first compiled in 1910 by a Finnish man named Antti Aarne, and it was his attempt to group folktales by plot and motif. For instance, Type 311 is Rescued by the Sister. Type 325 is The Magician and His Pupil. There are also types of fable that can be classified with others that tell of The Maiden Without Hands (706), The Girl as Wolf (409), and The Girl as Flower (407). The entire index ends at Type 2004 with Pulling Up the Turnip.