“Sure I will, boss, but I’m——”

“I know! You’re tired and hungry!” interrupted the young inventor. “I’ll see that you get a rest and some food, and you’ll be paid well. We can’t start at once—a few preparations are necessary. We’ve got to organize a searching party and hit the trail after Ned.”

“And I’m going with you!” cried Mr. Damon. “No, not a word—don’t forbid me!” he begged as he saw Tom hesitate. “I’m going!”

“As you think best,” Tom Swift agreed. “But we’ll have to do considerable before we can get ready. I think I’ll take Koku along,” he said.

“Good idea!” chuckled Mr. Damon. “He’ll be a match for any four men that may be holding Ned a prisoner. But why did they capture him, Tom? Answer me that!”

“I wish I could,” was the musing answer. “I don’t know what to think. I’m afraid there’s a deeper plot in all this than I had any idea of at first. Starting with the attempt to blow me up, then Ned’s disappearance—I’m afraid it means that some one objects, very strongly, to my perfecting—well, what I am perfecting,” Tom concluded, not wishing to name his latest invention.

“Well, let’s get going!” begged Mr. Damon, with the eagerness and enthusiasm of a boy. “Now don’t you run away!” he playfully ordered the old tramp.

“Not much chance of that, boss. I’m too weak hardly to walk, let alone running.”

“We’ll soon fix you up,” declared Tom, “in the way of food, anyhow. And you won’t need to walk. We’ll go in my electric runabout to the Smith place and get Ned out of the hands of these scoundrels.”

In spite of Tom’s haste in making preparations, it was not until the next morning that he was able to take the mysterious trail that he hoped would lead to his kidnapped chum. In the first place, the old tramp was really so weak from lack of food and from his long walk that Dr. Layton said it would not be wise to start out with him as a guide until he had had a night’s rest and plenty of nourishing food.