Tom thought considerable, but he did not answer the scientist just then. Another communication was coming to him by wireless. He listened intently.
"Father says," the lad told his companions, "that Eradicate only had a glimpse of the man at the last moment. He was looking from the rear store-room window—he's the same man who called on me that time—Rad remembers him very well."
"Bless my shoes! What's to be done?" inquired Mr. Damon, looking around helplessly.
"We must get him out, that's all," decided Mr. Jenks, with vigor. "Get him out and drop him overboard!"
"Drop him overboard!" cried Mr. Parker, in horror.
"Not exactly, but get rid of him," proceeded the diamond seeker. "That man is one of my enemies. He has been sent by the band of diamond makers hidden among the mountains, to spy on me, and, if possible, prevent me from seeking to discover their secret. He tried to work on Tom's Swift's fears, and frighten him from using his airship on this quest. Then, when he failed, the man must have sneaked into the shed, and hidden himself in the ship. We
