"Well, come on back. Daddy will miss us," declared Bert. He started back—at least he thought he did—for the place where their father had told them to wait for him. But the subway station under the New York sidewalks was so large and rambling, there were so many stairways leading here and there, up and down, and there were so many platforms that it is no wonder Bert went astray.
"Where are you going?" asked Nan at last.
"Well, I was trying to find the place father told us to wait," Bert answered.
"It's over this way," said Nan, pointing just the other direction from the one in which Bert was walking.
"All right, we'll try that, but it seems wrong," he stated.
They walked a little way in that direction. They saw nothing of their father, however, and there were fewer people on the platform where they now were.
"Oh, dear!" cried Flossie, "I'm thirsty! I want a drink!"
"So do I!" added Freddie.
Nan and Bert looked about them. They
