“It was a hot time while it lasted,” remarked Jerry.

“It sure was,” agreed his chum. “I wonder how Noddy is getting on?”

“Oh, all right, I guess. He’s so tough it takes a good deal to hurt him. I suppose we’ll hear from his folks.”

The motor boys did, a few days later, Mr. Nixon sending Bob, Ned and Jerry a formal note of thanks for what they had done for his son. Noddy was getting on all right, his father said, and would soon be out of bed. From Noddy himself no word came.

“I don’t wish him any bad luck,” spoke Ned, “but I hope he stays in bed a couple of weeks.”

“Why?” asked Jerry.

“So he won’t have a chance to interfere with us. I’d like to get started on our radium trip before he’s up and nosing around.”

“Why, he doesn’t even know we’re thinking of it,” put in Bob. “How can he interfere?”

“Well, somehow or other, he has always, more or less, made trouble for us whenever we go off on trips,” went on Ned. “I don’t know how it is, but it generally happens. Maybe this will be an exception.”