"Simmons," said McCarthy, "answer this man's questions."
"They will be in regard to these messages," said Darrow. "Where are they from?"
"Somewhere in the one-hundred to two-hundred-mile circles, depending on the power of the sending instrument," replied the operator promptly.
"Are you sure?"
"I know my instruments pretty well; and I've had experience enough so I can tell by the sound of the sending about how far off they come from."
"And this was from somewhere about one to two hundred miles away, you think?"
"Yes, sir."
"Do you know whether any other instruments caught this?"
"No, only mine." He was very positive.
"How do you know?"