"Now don't you do it," retorted Mrs. King in spirited protest. "He was always a blunderer and were he to go messing about with electrical currents I should not have a happy moment. It is bad enough to have one of you in constant danger without two."

"But it isn't dangerous," Walter interrupted.

"Much you know about it," declared his mother, wheeling on him with scorn. "What experience have you had with radio, pray?"

Meekly the lad closed his lips.

"I am going to give some lessons to Mr. Crowninshield's son, Mater, and it seemed to me it was a good chance for Walter to learn something, too," Bob responded gently. "Sometime the kid might find it useful to have such knowledge. You never can tell. Nothing we learn is ever wasted."

"No, I suppose not," was the grudging reply. "Well, just stand over him and see that he doesn't kill himself."

"I've no desire to have him killed."

"No more you have. Of course not," Mrs. King smiled. "But you know if there is any way of crossing the wires he'll do it. He's made that way. Still, unlucky as he is, I'd not care to lose him."

Fondly she beamed on the ill-starred Walter.

"I'll keep at his elbow, Mother," said Bob soothingly.