"Sure I know! It's how you talk to a horse. It's what you tell him when you want him to start."
"Well, I'm ready to start now," said Vi, smoothing out her dress, and putting the bathing-suit on her doll.
"Pooh! You don't tell a steamboat to 'gid-dap' when you want that to start!" exclaimed Russ. "You say 'All aboard! Toot! Toot!'"
"All right then. Toot! Toot!" cried Vi, and Margy and Mun, who had climbed up together in a single chair beside Vi, began to laugh.
"I know another riddle," announced Laddie, as he took his place inside the barrel, for he was going to be the fireman, and, of course, they always rode away down inside the steamboat. "I know a nice riddle about a horse," went on Laddie. "What makes a horse's shoes different from ours?" he asked.
"Oh, we haven't time to bother with riddles now, Laddie," said Rose. "You can tell us some other time. We're going to make-believe steamboat a long way across the deep water now."
"A horse's shoes aren't like ours 'cause a horse doesn't wear stockings—that's the answer," went on Laddie.
"All aboard!" cried Russ again.
"All aboard!" repeated Laddie.
"Oh, let's sing!" suddenly said Rose. She was a jolly little girl and had learned many simple songs at school.