He bowed politely, and waited for his instructions.

"I hope you are a trustworthy boy," said the stout lady.

"I hope so, ma'am."

"Come here, Fido," said the lady.

A little ma.s.s of hair, with two red eyes peeping out, rose from the carpet and waddled towards the lady, for Fido was about as stout as his mistress.

"Do you like dogs?" asked Mrs. Leroy, for this was the lady's name.

"Yes, ma'am," answered Frank, wondering what that had to do with his errand.

"I sent for you to take my sweet darling out for an airing. His health requires that he should go out every day. I generally take him myself, but this morning I have a severe headache, and do not feel equal to the task. My dear little pet, will you go out with this nice boy?"

Fido looked gravely at Frank and sneezed.

"I hope the darling hasn't got cold," said Mrs. Leroy, with solicitude.

"My lad, what is your name?"

"Frank Kavanagh, ma'am."

"Will you take great care of my little pet, Frank?"

"I will try to, madam. Where do you want him to go?"

"To Madison Park. He always likes the park, because it is so gay. When you get there you may sit down on one of the benches and give him time to rest."

"Yes, ma'am. How long would you like me to stay out with him?"

"About an hour and a half. Have you a watch?"

"No; but I can tell the time by the clock in front of the Fifth-avenue Hotel."

"To be sure. I was going to lend you my watch."

"Shall I start now?"

"Yes. Here is the string. Don't make Fido go too fast. He is stout, and cannot walk fast. You will be sure to take great care of him?"

"Yes, madam."

"And you keep watch that no bad man carries off my Fido. I used to send him out by one of the girls, till I found that she ill-treated the poor thing. Of course I couldn't stand that, so I sent her packing, I can tell you."

"I will try to follow your directions," said Frank, who wanted to laugh at the lady's ridiculous devotion to her ugly little favorite.

"That is right. You look like a good boy. I will give you something for yourself when you come back."

"Thank you, ma'am," said Frank, who was better pleased with this remark than any the lady had previously made.

Mrs. Leroy kissed Fido tenderly, and consigned him to the care of our hero.

"I suppose," said Frank to himself, "that I am the dog's nurse. It is rather a queer office; but as long as I am well paid for it I don't mind."

When Fido found himself on the sidewalk he seemed disinclined to move; but after a while, by dint of coaxing, he condescended to waddle along at Frank's heels.

After a while they reached Madison Park, and Frank, according to his instructions, took a seat, allowing Fido to curl up at his side.

"This isn't very hard work," thought Frank. "I wish I had a book or paper to read, to while away the time."

While he was sitting there Victor Dupont came sauntering along.

"Halloa!" he exclaimed, in surprise, as he recognized Frank, "is that you?"

"I believe it is," answered Frank, with a smile.

"Are you a telegraph boy?"

"Yes."

"I thought you were a newsboy?"

"So I was; but I have changed my business."

"What are you doing here?"

"Taking care of a dog," said Frank, laughing.

"Is that the dog?"

"Yes."

"It's a beastly little brute. What's its name?"

"Fido."

"Who does it belong to?"

Frank answered.

"I know," said Victor; "it's a fat lady living on the avenue. I have seen her out often with little pug. How do you feel, Fido?" and Victor began to pull the hair of the lady's favorite.

"Don't do that, Victor," remonstrated Frank.

"Why not?"

"Mrs. Leroy wouldn't like it."