For the intangible but real Linklater market, this is another of his adroit adult fantasies, a story of magic potions, animals who talk, and two young heroines' rescue of their father from a tyrant's dungeon. Sot in England -- an obscure satiric theme in the names of the characters and the fantastic situations that arise. Based on the superstition that when the moon is pale and has a circle of mist around it, there wind on the moon -- if it be an evil wind, all bad children will be bad for a long time. Dinah and Dorinda are warned by their father who is leaving on foreign service; they promptly set out to be bad with the aid of Mrs. Gimble who gives them a magic potion to turn them into kangaroos. In the Zoo they learn animal language and befriend a puma and a falcon. Restored to children again, they rescue their music teacher from prison and then dash off to rescue their father from his dungeon. A mad tale.