lost. But your father will soon find Flossie and bring her back to us."
"But if they don't find her, Mamma?"
"Oh, they'll be sure to do that, Nan. There is nobody around this building who would hurt our little Flossie."
"What an awful big building it is," remarked Nan. "And just think of the thousands and thousands of books! Why, I didn't know there were so many books in the whole world! Mamma, do you suppose any of the people down here read all these books?"
"Hardly, Nan. They wouldn't have time enough to do that."
And now we shall see what happens to Mr. Bobbsey and Bert. Flossie's father decided to try upstairs first, as Freddie seemed to think that was the way his little sister had gone.
"Of course, he isn't very sure about it," said Mr. Bobbsey to Bert; "but we may as well start one way as the other. If she isn't upstairs she must be down. Now we'll look around and ask questions."
They did this, inquiring of every one they
