"He saw them. One was Happy Harry, he is positive. The others he did not know, but he recognized the tramp from our description of him."
"Then we must tell the police at once."
"Yes, Tom, I wish you would telephone. I'll give you a description of the things. No, I can't do that either, for I don't know what was stolen. I must go home at once to find out. It's a good thing the motor-boat is here. Come, let's start at once. What is my bill here?" and the inventor turned to the hotel proprietor, who had come into the office. "I have suffered a severe loss and must leave at once."
"I am very sorry, sir. I'll have it ready for you in a few minutes."
"All right. Tom, is you boat ready for a quick trip?"
"Yes, dad, but I don't like to make it at night with three in. Of course it might be perfectly safe, but there's a risk, and I don't like to take it."
"Don't worry about the risk on my account, Tom. I'm not afraid. I must get home and see of what I have been robbed."
The young inventor was in a quandary. He wanted to do as his father requested and to aid him all he could, yet he knew that an all-night trip in the boat down the lake would be dangerous,
