There was a sound outside the door that separated the business office from the main shop, and Tom heard Koku exclaim:

"Hold on! Wait! I go first. You wait!"

"What's the matter with me going ahead?" demanded a quick, snappy voice. "I'm in a hurry, and—"

"You wait! I go first," was the giant's reply, and then came the sound of a scuffle.

"Ouch! Say! Hold on there, my man! Take your hand off my shoulder! You're crushing me with those big fingers of yours!"

This was evidently the visitor remonstrating with the giant.

"Humph! I guess Koku must have grabbed him," said Tom softly. "I don't like that sort of a visitor. What's his hurry getting in here?" and our hero looked about, to see if he had a weapon at hand in case of an attack. Often cranks had forced their way into his shop, with pet inventions which they wanted him to perfect after they had themselves failed. Tom saw a heavy iron bar at hand, and knew this would serve to protect him.

"You come after me!" exclaimed Koku, when the voice of the other had ceased. "Do you stand under me?"

"Oh, yes, I understand all right. I'll keep back. But I didn't mean anything. I'm just in a hurry to see Tom Swift, that is all. I'm always in a hurry in fact. I've lost nearly a thousand dollars this morning, just by this delay. I want to see Mr. Swift at once; and have a talk with him."

"Another crank, I guess," mused Tom. "Well, I'm not going to waste much time on him."