Tell you all about it tomorrow morning."
"Okay, Tom."
As Tom hung up, Bud roused and switched on a lamp. He had awakened in
time to catch only part of Tom's words. "Your father?" he inquired.
Tom nodded sleepily and was about to go back to bed. But Bud, still
fascinated by the space visitor, decided to have a peek at Exman. He got
up and opened the door to the laboratory. A yell from him brought Tom
rushing to his side.
"Hey! It's gone!"
The spot by the night light where they had left Exman was now deserted!
Tom found a wall switch and pressed it. As light from the overhead
fluorescent tubes flooded the room, the boys gave laughing cries of
relief.
Ole Think Box had merely moved himself to another corner of the room!
"Guess he didn't like that little chum we left on for him," Bud said
with a chuckle.
"Let's leave him where he is," Tom agreed.
The two boys went back to the adjoining apartment and were soon asleep
again. Several hours later they were rudely awakened by a loud crash of
glass and a heavy thud.
"Something's happening to Exman!" Tom cried.
With Bud at his heels, the young inventor dashed into the laboratory.
CHAPTER XII
EXMAN TAKES ORDERS
A strange sight greeted Tom's and Bud's eyes. In the first rays of
sunlight, the space robot was moving back and forth about the laboratory
in wild zigzag darts and lunges.
As he rolled toward a bench or other object, the brain energy seemed to
send out invisible waves that knocked things over! Already the floor was
strewn with toppled lab stools, books, and broken test tubes.
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