“No, motor out there. Our auto will soon be out of the repair shop, and we could have a fine time going West in it. Say, things couldn’t happen better; could they, Professor?” and Bob began pacing up and down the room.

“What has happened?” asked the scientist suddenly, for he had again become absorbed in his book, and had paid no attention to the talk of the boys. “Is anything the matter?”

“We’re still talking radium,” explained Ned. “Trying to get Jerry enthused enough to go to Snake Island.”

“Oh, I’ll go if the rest of you do,” agreed the widow’s son. “Only it doesn’t sound feasible. Our airship isn’t at hand, the motor is laid up for repairs, and——”

“But we have the motor boat,” broke in Ned. “We can use that.”

“On dry land!” laughed Jerry. “Say, you fellows have great ideas—great!”

“Give us some of yours then,” suggested Bob.

“Well, my notion is——”

“I’ve got it! I’ve got it!” fairly yelled Professor Snodgrass, leaping from his chair, and holding the book above his head. “I’ve got it!”