Mr. Brown darted for the door, but paused a moment to ask Sue:

“Did Bunny go out?”

“I didn’t see him,” Sue answered.

But then she had been looking out of the window and would not have noticed what her brother did. Mr. Brown gave a quick glance about the car. Bunny was not in sight and the train was now pulling rapidly out of the station.

Then a man, who was sitting just behind Mrs. Brown, said:

“I saw a little boy go out of that door. Perhaps he may be the one you are looking for.”

“Oh, yes, I guess he is!” gasped Sue’s mother. “Bunny is always doing such strange things!”

By this time Mr. Brown was near the door leading out to the front platform of that car in which the Browns were traveling. But before his father could step outside in came Bunny.

“Where have you been, Bunny?” cried his mother.

“Just out on the platform,” he replied. “Why?”