“You’ve saved mother’s life!” cried Ruth, with a catch in her voice.

“And we love you for it!” added Edna gratefully. “You just wait till mother knows!”

[CHAPTER XXIV—A PLOT THAT WENT WRONG]

“So far, so good,” breathed Bob happily, as the boys were discussing the news that Mrs. Salper had passed the crisis and was now probably on the road to recovery. “That’s one thing we can set down to the credit of radio.”

“And it’s not the only thing of the same sort,” put in Joe. “Do you remember what Mr. Brandon told us of that ship with thirty men and no doctor on board, where twenty-four of the men were down with a mysterious disease? The captain got a message by wireless to shore telling of his plight, and one of the best doctors in New York City went to the radio station there and got in touch with the captain. He talked to him by radio for hours, had him describe just the symptoms, and then told the captain just what to do. A couple of days later the captain wirelessed in that he had followed directions and that all of the men had recovered and were fit for duty.”

“Yes,” said Herb, “and about that other case, too, where a man had an infected hand and they were afraid he was going to have lockjaw. A doctor on land told the captain how to treat it and the man got along all right.”

“Trust radio, and you won’t go wrong,” summed up Bob. “On land and sea it’s right on the job.”

“I only hope it will be as effective in saving Mr. Salper’s money,” observed Joe.

“I think very likely it will,” replied Bob. “He’s about as keen as they make them, and now that he knows what those rascals are plotting against him it’s dollars to doughnuts that he’ll get the best of them. Their only chance was in taking him by surprise and putting over that deal while his back was turned. And now that he’s got in touch with his brokers I guess the game is up.”

“I wonder how long it will be before we know how it turned out,” conjectured Herb.