“That’s the switchboard boy!” exclaimed the girl, so that all heard her. “I know his name is Tom, but I don’t know his last name.”

“Baldwin,” answered our hero, blushing the least bit. “I am much obliged to you.”

The experiment was tried for some time longer, but each time Miss Renfield was able to tell whether one of the strange clerks, or Mr. Boise, Tom, or Mr. Cutler was speaking.

“I think that is proof enough,” remarked Mr. Boise to her over the wire. “Come in, please.”

The two clerks left, Mr. Boise thanking them for their assistance, and Miss Renfield came back to the office.

“I am fully satisfied,” said the senior partner, “that this young lady is right.”

“Then you think Tom did not send that message?” asked Elias Cutler.

“I do not believe he did.”

“Well, who is guilty, then?”

“I can not say. I suppose you would not be able to tell, if you heard the voice of every one in my employ, which voice it was that talked the second time to the law office of Mr. Kittridge?” he asked the girl.