Such is the change which has taken place in the popular conception of the dragon, which is an impersonification of the thunderstorm. A similar change has taken place in the swan-maiden and were-wolf myths.
In ancient Indian Vedaic mythology the apsaras were heavenly damsels who dwelt in the æther, between earth and sun. Their name, which signifies "the shapeless," or "those who go in the water"—it is uncertain which is the correct derivation—is expressive of the white cirrus, constantly changing form, and apparently floating swan-like on the blue heaven-sea. These apsaras, according to the Vedaic creed, were fond of changing their shapes, appearing generally as ducks or swans, occasionally as human beings. The souls of heroes were given to them for lovers and husbands. One of the most graceful of the early Indian myths is the story of the apsaras, Urvaçî. Urvaçî loved Puravaras and became his wife, on the condition that she was never to behold him in a state of nudity. They remained together for years, till the heavenly companions of Urvaçî determined to secure her return to them. They accordingly beguiled Puravaras into leaving his bed in the darkness of night, and then with a lightning flash they disclosed him, in his nudity, to his
