"Now don't worry," said Tom, soothingly, as he put his arms about her as he would have done to his own mother, had she been alive, "We'll get him back!"
"But how can you? No one knows where he is."
"Oh, yes!" said Tom, confidently, "Mr. Damon himself knows where he is, and unless he has gone away voluntarily, I think you will soon hear from him."
"What do you mean by--voluntarily?" asked the wife.
"First let me ask you a question," came from Tom. "You said you were awakened by a peculiar noise. What sort of a sound was it?"
"Why, a whirring, throbbing noise, like--like--"
She paused for a comparison.
"Like an airship?" asked Tom, with a good deal of eagerness.
"That was it!" cried Mrs. Damon. "I was trying to think where I had heard the sound before. It was just like the noise your airship makes, Tom!"
"That settles it!" exclaimed the young inventor.