The elevator quickly carried them up to Aunt Lu's floor.
"Oh, now I see the number!" cried Bunny. "It's ten—I won't forget any more."
"Well, did you have a good time?" asked Mother Brown when Bunny and Sue came in, followed by Wopsie.
"We got losted!" exclaimed Sue.
"What! Lost so soon?" cried Aunt Lu. "Where was it?"
"In a house just like this," broke in Bunny. "And it had a lift elevator and a colored boy and everything. Only he said you didn't live there, and you didn't, and I didn't know the number of your floor, or of your house, and we got losted!"
"But I found them!" said Wopsie, for she felt it might be a little bit her fault that Bunny and Sue had gotten away. But of course it was their own fault for running to hear the music.
"You must be careful about getting lost," said Aunt Lu. "But of course, if ever you do, just ask a policeman. I'll give you each one of my cards, with my name and address on, and you can show that to the officer. He'll bring, or send, you home."
Sue and Bunny were each given a card, and they put them away in their pockets, where they would have them the next time they went out on the street.
For the next two or three days Bunny Brown and his sister Sue did not go far away from Aunt Lu's house. Wopsie took them up and down the block for a walk, but more often they were riding in Aunt Lu's automobile. And many wonderful sights did the children see in the big city of New York. They could hardly remember them, there were so many.