dock-rats would try to steal it if I left it alone an hour or so."

"Oh, you did, eh?" asked Nat as he stepped out on the float. "Well, you're mistaken. Next time you want to learn how to tie a knot that won't slip when you leave your boat, if you don't want it knocked into kindling wood by a steamer."

"Tie a knot! Smash the boat! Why—why—you're all wet!" exclaimed the other.

"Shouldn't wonder," observed the boy calmly. "The Chicago River isn't exactly dry at this time of the year."

He finished tying the boat, making a regular sailor's knot, and then started up the gangplank. Clearly he might expect no reward from this man.

"Hold on a minute," said the owner of the boat.

"I'm in a hurry," replied Nat, "I want to get my clothes. They're up on the pier, and somebody might take a notion to walk off with 'em. Not that they're worth an awful lot, but they're all I have. Guess you'll have to excuse me."

"Going for your clothes? I don't exactly understand."

"He jumped off the dock and got your boat, which went adrift right in the course of that steamer," explained a 'longshoreman who had listened to the conversation and who had seen what Nat did. "Plucky thing it was, too. If it hadn't been for him you wouldn't have any boat now."

"Is that so? I didn't understand. I thought he was trying to steal my boat."

"Steal your boat? Say, you don't belong around here, do you?"

"No. My father is the owner of a small steam yacht, and I am taking a trip with him. This is the first time I was ever in Chicago. The yacht is tied out there, beyond some other vessels, and I took this boat and came ashore a while ago to see the sights. When I came back I saw that boy in my boat."

"Humph!" murmured the 'longshoreman as he turned away. "You want to take a few lessons in tying ropes. That boy did you a good service."

"I see he did, and I'm sorry I spoke the way I did. I'll give him a reward."

By this time Nat was up on the pier from which he had jumped. He found his clothes, and put them on over his wet undergarments. The day was hot, and he knew the latter would soon dry.

Besides, he was used to being wet half the time, as he and other lads of his acquaintance frequently dived off the stringpiece and swam around in the lake. So when the owner of the rescued rowboat looked for the boy he could not see him. But he determined to make up for his unintentional rudeness, and so went after Nat.

He found the boy with a number of others crowded about the entrance to the freight office.

"May I speak to you a few moments?" asked the young man.

"Guess you'll have to excuse me," replied Nat. "I'm busy."

"What doing?"

"I'm waiting for a job. I may get one helping carry out some light freight, and I need the money."

"How much will you get?"

"Oh, if I'm lucky I may make a dollar."

"I'll give you more than that for saving my boat. I want to explain that I didn't understand what you had done when I spoke so quickly."

"Oh, that's all right," said Nat good-naturedly. "But if you're going to give me a dollar I guess I can afford to quit here," and he stepped out of the line, the gap immediately closing up, for there were many in search of odd jobs to do about the dock whenever a steamer came in.

"Here are five dollars," went on the young man, producing a bank bill.

"Five dollars!" exclaimed Nat. "Say, mister, it ain't worth all that—saving the boat."

"Yes, it is. That craft cost my father quite a sum, and he would have blamed me if she had been smashed. I'm much obliged to you. I'm sorry I thought you were stealing her, but it looked——"

"Forget it," advised Nat with a smile. "It's all right. I'll save boats for you regularly at this price."

"Do you work around the docks—er——"

"My name's Nat Morton," said the lad.

"And mine is John Scanlon," added the other, and he explained how he had come to leave his boat at the float. "I don't know that I will have any more boats to save, as my father's yacht will soon be leaving for Lake Superior. Wouldn't you like a place on her better than your regular job?"

"My regular job? I haven't any. I do whatever I can get to do, and sometimes it's little enough."

"Where do you live?"

"Back there," replied Nat with a wave of his hand toward the tenement district of Chicago.

"What does your father do?"

"I haven't any. He's—he's dead." And Nat's voice broke a little, for his loss had been a comparatively recent one.

"I'm sorry—I beg your pardon—I didn't know——"

"Oh, that's all right," said Nat, bravely keeping his feelings under control. "Dad's been dead a little over two years now. He and I lived pretty good—before that. My mother died when I was a baby. Dad was employed on a lumber barge. He had a good job, and I didn't have to work when he was alive. But after he was lost overboard in a storm one night, that ended all my good times. I've been hustling for myself ever since."

"Didn't he have any life insurance, or anything like that?"

"Not that I know of. I remember he said just before he went on—on his last trip—he told me if it turned out all right he'd have a nice sum in the bank, but I never heard anything about it. They found his body, but there was no money in the clothes, nor any bank books."

"That's too bad. How do you get along?"

"Oh, I make out pretty well. I live with a Mr. William Miller and his wife. They're poor, but they're good to me. He's a 'longshoreman, and he works around the docks. I do, too, whenever there is any work to be had, and I manage to make a living, though it isn't very much of a one."

"No, I presume not. Perhaps if I speak to my father he might give you a position on his boat."

"I'm much obliged to you," replied Nat. "I like boats and the water. I'd like to be a pilot."

"I'm afraid dad couldn't give you that job," answered young Mr. Scanlon. "We have a good pilot."

"And I don't want to leave the Millers," added the boy. "They've been good to me, and I want to pay them back. But isn't that some one calling you?"

He pointed to a figure down on the float, where the boat was tied.

"Yes. That's the mate of my father's steam yacht. Probably father sent him for me. Well, I'll have to say good-by. I hope I'll see you again."

"I hope so, too, especially if you have any more boats you want saved. I'm afraid five dollars is too much."

"Not a bit. Take it and welcome."

"It's more than I could earn in a week," went on Nat as he carefully folded the bill and placed it in his pocket. "All the same, I think I'll try for a job here now. It looks as if they needed lots of hands, because the boat is late."

Bidding John Scanlon good-by Nat turned back to the freight office, in front of which there was now only a small throng looking for employment.

CHAPTER II
A CRY FOR HELP

Owing to the time he had spent talking to the young man whose boat he saved, Nat lost a chance of getting work in helping to unload the steamer. Still he did help to carry some freight to the waiting trucks and drays, and for this he received fifty cents. But as he had five dollars, he did not mind the small sum paid him by the freight agent.

"You weren't around as early as usual," remarked that official as he observed Nat. "You usually make more than this."

"I know it, but I had a job that paid me better," and our hero told about the boat incident.

"Another steamer'll be in day after to-morrow,"