Tom looked about the shop, which was filled with strange machinery, most of which had been made by himself, or his father, or under their combined directions.  There was a big biplane in one corner, a small monoplane in another, parts of a submarine boat hanging up overhead, and a small, but very powerful, electric auto waiting to have some repairs made to it, for on his last trip in it Tom Swift had suffered a slight accident.

“There, I guess he can’t see anything but what I want him to,” mused Tom, as he put away the last part of a new kind of motor, from which he hoped great things.  “Let’s see, yes, it’s out of sight now.  I wish Ned Newton, or Mr. Damon were here to be a witness in case he starts anything.  But then I have Koku, even if he doesn’t speak much English yet.  If it comes to blows—­well, I wouldn’t want that giant to hit me,” finished Tom with a laugh, as he rang the bell to announce to his servant that the visitor might be shown in.

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.”

A moment later the door opened, and into the shop stepped Koku, followed by a short, stout, fussy little man, wearing a flaming red tie, but otherwise his clothes were not remarkable.

“Is this Mr. Tom Swift?” asked the stranger, as he advanced and held out his hand to the young man.

“Yes,” answered Tom, looking carefully at the visitor.  He did not seem to be dangerous, he had no weapon, and, Tom was relieved to note that he did not carry some absurd machine, or appliance, that he had made, hoping to get help in completing it.  The youth was trying to remember if he had ever seen the stranger before, but came to the conclusion that he had not.