The Mechanics Warmed up the Engines

"Nothing like that happened. I'm positive, because the same thought struck me. I made a careful inspection this morning. Everything was in perfect order."

"It certainly is strange," said Ned. "It looks as if some enemy is camping on your trail, Tom!"

"He'll have a hard time picking up that same trail in a few minutes," chuckled the inventor. "Here come Captain Britten and Dad. I guess we can take off soon."

"A Bottle of Acid Might Have Cracked."

"So your sea-goin' air-yacht is ready to cast off, is she?" asked the old diver. "Well, when ye haul in the gangplank, so to speak, I'll be aboard!"

"Take care of yourself, son," said Barton Swift, shaking Tom's hand. "I hope you will be successful in your attempt."

"Good-bye, Dad. And thanks."