They all looked around, but the piglets had disappeared.

"Dear me!" cried the Wizard; "they must have run away. But I didn't see them go; did you?"

"No!" replied the boy and the girl, together.

"Here,--piggy, piggy, piggy!" called their master, anxiously.

Several squeals and grunts were instantly heard at his feet, but the Wizard could not discover a single piglet.

"Where are you?" he asked.

"Why, right beside you," spoke a tiny voice. "Can't you see us?"

"No," answered the little man, in a puzzled tone.

"We can see you," said another of the piglets.

The Wizard stooped down and put out his hand, and at once felt the small fat body of one of his pets. He picked it up, but could not see what he held.

"It is very strange," said he, soberly. "The piglets have become invisible, in some curious way."

"I'll bet it's because they ate that peach!" cried the kitten.

"It wasn't a peach, Eureka," said Dorothy. "I only hope it wasn't poison."

"It was fine, Dorothy," called one of the piglets.