He first set up a small silver tripod and placed a gold basin at the top of it. Into this basin he put two powders—a pink one and a sky-blue one—and poured over them a yellow liquid from a crystal vial. Then he mumbled some magic words, and the powders began to sizzle and burn and send out a cloud of violet smoke that floated across the river and completely enveloped both Trot and Cap'n Bill, as well as the toadstools on which they sat, and even the Magic Plant in the gold flower-pot. Then, after the smoke had disappeared into air, the Wizard called out to the prisoners:  
"Are you free?"
 
Both Trot and Cap'n Bill tried to move their feet and failed.
 
"No!" they shouted in answer.
 
The Wizard rubbed his bald head thoughtfully and then took some other magic tools from the bag.
 
First he placed a little black ball in a silver pistol and shot it toward the Magic Isle. The ball exploded just over the head of Trot and scattered a thousand sparks over the little girl.
 
"Oh!" said the Wizard, "I guess that will set her free."
 
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."
 
"I think," said the Wizard reflectively, "that I'd better go to the shore of the island, where I can talk to them and work to better advantage. How did Trot and Cap'n Bill get to the island?"
 
"On a raft," answered the Glass Cat. "It's over there now on the beach."
 
"I suppose you're not strong enough to bring the raft to this side, are you?"
 
"No; I couldn't move it an inch," said the Cat.
 
"I'll try to get it for you," volunteered the Cowardly Lion. "I'm dreadfully scared for fear the Magic Isle will capture me, too; but I'll try to get the raft and bring it to this side for you."
 
"Thank you, my frie............