other drinks in the bottle," Joe said.

"Save me some!" cried a boy up in the gallery, as the man drained the
glass of grape juice.

"Now who'll have milk?" Joe asked.

"I will," called a boy in the second row. Without moving from where he
stood Joe picked up a glass, and, from the same bottle, poured out a
drink of milk which he passed to the boy, who took it wonderingly.

"Is it the real stuff?" asked Joe, smiling at the lad.

"That's what it is!" was the quick answer.

"Drink it then. And now for water. Here we are!" And from the same
bottle, out of which the audience had seen milk and grape juice come,
Joe poured sparkling water and passed it to a lady in the audience.

"Hello! What's this? There appears to be something else in the
bottle!" exclaimed Joe, apparently surprised, as he held the flask up
to his ear.

"Yes, I'll let you out--right away," he said aloud. "There must be
some mistake," he went on, "there is an animal in this bottle. I'll
have to break it open to get it out."

He went quickly back on the stage with the bottle, took up a hammer,
and holding the flask over a table gently cracked the glass. In an
instant he held up a little guinea pig.

There was a moment's pause, and then the applause broke out at the
effectiveness of the trick.

How was it done?

A trick bottle, you say at once. That is right. The bottle was made
with three compartments. One held milk, another grape juice and the
third water. Joe could pour them out in any order he wished, there
being controlling valves in the bottom of the bottle.

But how did the guinea pig get inside?

It was another bottle. The bottom of this one had been cut off, and,
after the guinea pig had been put inside, the bottom was cemented on
again. This was done just before the trick was performed. On his way
back to the stage, after having given the lady the glass of water, Joe
substituted the bottle containing the guinea pig for the empty one that
had held the three liquids. This was where his quick sleight-of-hand
work came in. When he gently broke the bottle it was easy enough to
remove the little animal, which had been used in tricks so often that
it was used to them.

Joe brought the show to a satisfactory conclusion, perhaps a little
earlier than usual, as he was anxious to get to the hotel and see how
the professor was. The audience seemed highly pleased with the
illusions the boy wizard gave them, and clapped lon