I must have been drunk,"" says the mouse to the cat, explaining away his promise to let himself be eaten. In this and each of the fifteen other newly collected turnabout tales, a scoundrel is outwitted or a fool is unmasked by a twist of fate or a play on words. Justice and injustice triumph impartially: to the clever belong the spoils. The brief, spirited stories are set in large type and surrounded and supported by illustrations in candy store combinations of pink and yellow with alternating pages of umber sketches. This is light-fingered Low, at his best for children. A pretty package full of surprises, a chocolate-covered pretzel.