"
"I guess you're all right now, after getting that out of your
system," observed Mark.
It was two days after this that Jack and Mark, who were working
in the shop with Mr. Roumann, suddenly heard him utter a cry.
"Has anything happened?" called Jack, dropping his tools and
hastening to the engine-room, where the scientist was.
"Yes!" cried the German.
"What?"
He was pacing rapidly up and down the contracted space, waving a
piece of metal above his head. Jack thought he might have hurt
himself.
"I have discovered what was the matter with my Etherium motor!"
exclaimed Mr. Roumann. "I didn't bend this piece of metal
properly. That was why the machine did not work satisfactorily.
Now it is all right. We can start in a week."
"That's good!" said Mark, who had joined his chum. "Are you sure
it will work now, Mr. Roumann?"
"Quite sure. But we will have a test to make certain. Send
Professor Henderson here, Please."
The other scientist came from the house, and the test was made.
To the delight of all the Etherium motor worked perfectly. The
slight adjustment of the piece of metal had been all that was
needed.
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