“There’s no room for doubt in my mind,” said Dr. Ferris. “The coincidence of the birthmarks, most unusual in shape and texture, the poor woman’s behavior at sight of a man who at first glance appeared to be without legs ”

“Yes,” said Barbara, “but I go more on a certain expression that Bubbles sometimes has and that makes him look like his father. You see, I’ve done both their heads, and studied them closer than anybody else.”

“Do you suppose the boy knows?”

She shook her head. “I think not. He’s too too decent. If he thought that Blizzard was his father, he wouldn’t say the things that I have heard him say about him. He’s the most loyal child.”

“Do you suppose Blizzard knows?”

“Why, of course. A man could hardly have a son without knowing him especially a man who lives with his ears to the ground and his mind in touch with everything in the city.”

Dr. Ferris smiled a little. “Well,” he said, “shall we tell Bubbles?”

“Why should we? I shouldn’t like to be told out of a clear sky that I had such and such a father. It doesn’t seem in the least necessary.”

But before the day was out Barbara thought best to tell Bubbles. He came to her, with a slightly important air, which he did his best to conceal, and said that he wished to go to the city for a few days, on business.

“Sure the business isn’t free untrammelled smoking?”

Bubbles was offended. “If I hadn’t given you my word,” he said, “you might think that. I told you when we came that I might have to go back any time on business. I got to go. Honest, Miss Barbara.”

“Well, that settles it, Bubbles. But don’t you think as long as I’m trying to give you some of the things you’ve missed, that you might take me a little more into your confidence?”

She maintained a discreet and serious countenance, although she wished very much to laugh.

The boy studied her face gravely with grave eyes. “The ABC of my business,” he said presently, “is knowing who to trust. I know you won’t blab, Miss Barbara, ’r else I wouldn’t tell you. There’s a society in New York City for putting down grafts and crimes. There’s a rich man back of it. And there’s more kinds o’ people working for it than you’d guess in a year. There’s even policemen workin’ for it ”

“But it’s their business to put down crime.”

Bubbles shook his head sadly. “The chief business of the society is to put down police graft in crime,” he said. “But there’s heaps o’ side businesses. Harry West, he’s one of us. He’s way high up. I’m way low down. But when I’m called to do what I can, I got to do it. There’s one member younger’n me. And there’s Fifth Avenue swells belongs, and waiters, and druggists, and bootblacks, and men in hardware stores, and barkeepers ”

“What sort of work do you have to do?”

“To go places and find out things.”

“Why, then you’re a detective, Bubbles.”

A look of contempt swept into the child’s face. “Detectives is in business,” he said, “for what they can get out of it. We’re in it because the house we live in is dirty and full of rats, and we want to make it clean.”

The boy had raised his voice a little, and Barbara found herself thrilling to it.

“But, Bubbles,” she objected, “you can’t go to school and college and keep up this work at the same time.”

“If I get education,” said Bubbles, “it’s so’s to be fitter for the work when I come out. But I can’t give the work up till the job I’m on is finished. It wouldn’t be square.”

“Can you tell me the job?”

“I’m one o’ them that’s helpin’ to get the old un where he’s wanted.”

“What old one?”

“Blizzard.”

Barbara was very much taken aback. “The man I made the bust of?”

“We can send him to the chair any time. But what’s the use? He knows things that we got to know before we pass him up.”

“But, Bubbles, how can you help?”

“Oh, I’m little. I can get into little places. They wouldn’t want me if I weren’t of use.”

“But I don’t like the idea of your running down Blizzard, Bubbles.”

“Why not, Miss Barbara? There’s no one in the city that’s needed as much as him.”

“Aside from that, Bubbles I’m willing to grant that there’s a reason why I think you should have nothing to do with running him down.”

“It’s got to be an awful good one, Miss Barbara not just good to you, and maybe to me, but to men higher up.”

“I think it would be good enough for the very highest up, Bubbles. Will you take my word for it?”

“Yes, Miss Barbara. But they won’t take my word for your word.”

“No,” she said, “of course not.”

She considered for a few moments. Then she said: “Bubbles, I’m going to tell you my reason. I hope I’m not doing wrong. It’s a serious thing for me to tell you and for you to know. There is very little doubt but that Blizzard is your father.”

“Say that again, please,” said Bubbles.

“Blizzard is probably your father.”

Bubbles took the news very coolly. His eyes sparkled; but he made no exclamations of surprise or chagrin. Instead he said: “That accounts for it.”

“Accounts for what?”

“Oncet he caught me in his house. He said the next time he’d skin me alive. If I hadn’t been his son he’d a skun me that time. Do you get me, Miss Barbara? He’s my father, sure. But ” Now chagrin, wonder, and perplexity were written in Bubbles’s face. “Why,” he said, “it makes everything different. He never done anything for me; but if he’s my father ”

“You can’t very well spy on him, can you, Bubbles? You’ve got to stand aside and leave all that to others.”

“I got to see the Head, Miss Barbara. I got to ask him.”

“Who is the head, Bubbles?”

“I’d tell you in a minute, Miss Barbara, only we’re all swore to tell no one. But what he says goes with me. It’s got to be that way, else we’d never get nowhere.”