But Trot's feet were still rooted in the ground of the Magic Isle, and the disappointed Wizard had to try something else.

For almost an hour he worked hard, using almost every magic tool in his black bag, and still Cap'n Bill and Trot were not rescued.

"Dear me!" exclaimed Dorothy, "I'm 'fraid we'll have to go to Glinda, after all."

That made the little Wizard blush, for it shamed him to think that his magic was not equal to that of the Magic Isle.

"I won't give up yet, Dorothy," he said, "for I know a lot of wizardry that I haven't yet tried. I don't know what magician enchanted this little island, or what his powers were, but I DO know that I can break any enchantment known to the ordinary witches and magicians that used to inhabit the Land of Oz. It's like unlocking a door; all you need is to find the right key."

"But 'spose you haven't the right key with you." suggested Dorothy; "what then?"

"Then we'll have to make the key," he answered.

The Glass Cat now came back to their side of the river, walking under the water, and said to the Wizard: "They're getting frightened over there on the island because they're both growing smaller every minute. Just now, when I left them, both Trot and Cap'n Bill were only about half their natural sizes."