"The inventor of the Swift safety lamp, and the turbine motor?"
At the mention of the motor Mr. Swift started.
"I am the inventor of the safety lamp you mention," he said stiffly, "but I must decline to talk about the motor. May I ask where you obtained your information concerning it?"
"Why, I am not at liberty to tell," went on the man. "I called to see if we could negotiate with you for the sale of it. Parties whom I represent--"
At that moment Tom plucked his father by the sleeve.
"Dad," whispered the youth, "I saw him in Mansburg. I think he is one of several who have been inquiring in Mr. Merton's shop about you and your patents. I wouldn't have anything to do with him until I found out more about him."
"Is that so?" asked Mr. Swift quickly. Then, turning to the stranger, he said: "My son tells me--"
But Mr. Swift got no further, for at that moment the stranger caught sight of Tom, whom he had not noticed before.
"Ha!" exclaimed the man. "I have forgotten something--an important engagement--will be back directly--will see you again, Mr. Swift--excuse the trouble I have put you to--I am in a great hurry," and before father or son could stop him, had they any desire to, the man turned and walked quickly from the yard.
Mr. Swift stood staring at him, and so did Tom. Then the inventor asked: