“If it rains very hard we can take shelter in a cave not far from here that I know of,” said Mr. Todd.

“Oh, a cave! Where is it?” asked Russ, who was lying down in the shade, having helped put up the swing. “Could we go and see it?” he inquired.

“After a while, maybe,” promised Farmer Joel.

Rose helped her mother spread out the good things to eat. They found some flat stumps which answered very well for tables, and after Mun Bun and Margy and Laddie and Violet had swung as much as was good for them, and when they had raced about, playing tag, hide-and-seek, and other games, the children were tired enough to sit down in the shade.

“We’ll eat lunch after you rest a bit,” said Mrs. Bunker.

“Ah, now comes the best part of the day!” murmured Russ.

“Silly! Always thinking of something to eat!” chided Rose. But she smiled pleasantly at her brother.

How good the things eaten in the picnic woods tasted! Even plain bread and butter was almost as fine as cake, Laddie said. He was trying to think of a riddle about this—a riddle in which he was to ask when it was that bread and butter was as good as cake—when suddenly there came a low rumbling sound.

“What’s that?” asked Margy.

“Thunder, I think,” was the answer.