"Oh, yes, they have sleeping-cars," said Mr. Bunker. "Do the cars sleep?" asked Laddie, his eyes opening wide in surprise. "Oh, that's funny—a sleeping-car. And—and——Say! maybe I can think up a riddle about a sleeping-car," he added. "You'd better think about drinking your milk, and getting good and fat, with rosy cheeks, so Grandma Bell will like to kiss them," said Mother Bunker with a laugh. "Don't think so much about riddles or sleeping-cars." "Maybe I can think of a riddle with a sleeping-car in it and some milk, too," said Laddie. "Perhaps you can!" laughed Daddy Bunker. "A cow in a sleeping-car would do for that." After the children had gone to bed—each one eager to dream about Grandma Bell— Mr. and Mrs. Bunker sat up and talked about what was to be done. "It's too bad about those papers the tramp took in the old coat," said Mrs. Bunker. "Yes, I am sorry to lose them," said her husband. "But perhaps the tramp may be found, and I may get them back." Russ, Rose, and all the rest of the six little Bunkers got up early next morning. "Is It Fourth of July yet?" asked Munroe. "No, not yet, Mun Bun," answered Rose with a laugh. "But it soon will be—in a few days." "I'm going to finish my cannon," said Russ. "Come on!" called Laddie to his twin sister Vi. "Let's go down and dig a hole in the sand pile." "What for?" she asked. Violet hardly ever did anything without first asking a question about it. "Huh?" "What for we dig a hole?" "To put fire-crackers in," answered Laddie. "And when they shoot off—'Bang!'—they'll make the sand go up in the air." "Like a sky-rocket?" asked Vi.