That very afternoon, Alexander went into the garden and ran to the end of the path. "Lizard, lizard," he whispered. And suddenly there stood before him, full of the colors of the flowers and butterflies, a large lizard. "Is it true that you could change me into a wind-up mouse?" asked Alexander in a quivering voice. "When the moon is round," said the lizard, "bring me a purple pebble."