Mr. and Mrs. Bobbsey smiled at each other, and Mr. Bobbsey, taking out a time-table, looked to see how much longer they would be on the train.

"It's about an hour yet," he said to Nan, and she sighed. Really she was more tired than she cared to let her mother know.

Just ahead of the two Bobbsey children were another set of them.

I say "set" for the Bobbsey children came "in sets."

There were two pairs of twins, Bert and Nan, nearly nine years of age, and Flossie and Freddie, almost five. And, whereas the two older children were rather tall and slim, with dark brown hair and eyes, the littler twins were short and fat, and had light hair and blue eyes. The two pairs of twins were quite a contrast, and many persons stopped to look at them as they passed along the street together.

"No, sir," went on Bert musingly, "school's no fun, and it starts about a week after we get home. No chance to have a good time!"

"We've had fun all summer," replied his sister. "I rather like school."

"Mamma, are we going to school this year?" asked Flossie, as she looked back with a quick turning of her head that set her yellow curls to dancing.

"If we are, I'm going to sit with Flossie—can't I?" asked Freddie, kneeling in the seat so that he could face back to his father and mother.

Indeed his request was not strange, since the two younger twins were always together, even more so than their brother and sister.

"Yes, I think you and Freddie will start school regularly this term," said Mrs. Bobbsey, "and, if it can be arranged, you may sit together. We'll see about that. Be careful Freddie, don't put your head out of the window," she cautioned quickly, for the little chap had turned in his seat again, and was leaning forward to see a horse galloping about a field, kicking up its heels at the sound of the puffing engine.