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. Jenks.
"My house—my father. He—he's been trying to get us ever since we started, but I didn't
