And to whom this message was addressed Tom did
not say, but we fancy some of our readers can guess.
Finally, after several hours of work, the wireless was in shape
to send and receive messages. Tom pulled over the lever, and a
crackling sound was heard, as the electricity leaped from the
transmitters into space. Then he clamped the receiver on his ear.
"All ready," he announced. "Has anybody any messages they wish
sent?" For, with the courtesy of a true host he was ready to
serve his guests before he forwarded his own wireless notes.
"Just tell my wife that I'm enjoying myself," requested Mr.
Damon. "Bless my footstool! But this is great! We're off the
earth yet, connected with it."
Mr. Jenks had no one to whom he wanted to send any word, but
Mr. Parker wish to wire to a fellow scientist the result of some
observations made in the upper air.
Tom noted all the messages down, and then, when all was in
readiness he began to call his home station. He knew that either
his father or Mr. Jackson, the engineer, could receive the
wireless.
But, no sooner had the young inventor sent off the first few
dots and dashes representing "S. I."--his home station call--than
he started and a look of surprise came over his face.
"They're calling us!" he exclaimed.
"Who is?" asked Mr.
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