"Bunny Brown! Don't you dare think of such a thing!" cried his mother. "The idea of climbing onto the roof of this big automobile when it's moving!"

"Oh, I didn't mean when it was moving," Bunny said. "I wouldn't do that, for fear I'd be jiggled off. I meant to wait until we stopped. Then I could get up on the roof."

"No need to do that," said Uncle Tad. "For when we stop, then one of you can get down, and run up ahead with something for daddy and Bunker Blue."

And, a little later, the automobile did stop.

"What's the matter?" called Mrs. Brown to her husband, who was up on the front seat. "Did anything happen?"

"No, only the automobile needs a drink of water," answered Mr. Brown. I have told you how automobiles need water, as much as horses do, or as you do, when you get warm. Of course the automobile does not exactly drink the water. But some must be poured in, from time to time, to keep the engine cool. And this was why Bunker Blue stopped the automobile now.

While he was pouring water in, dipping it up with a pail from a cold spring beside the road, Bunny and Sue got out and took their father and the red-haired boy some jam and jelly tarts, and also some sandwiches.

"My! This is fine!" cried Mr. Brown, as he ate the good things Sue handed him. "I'm glad we're going camping; aren't you, children?"

"Oh, I should say we were glad!" cried Bunny, as he took a drink from the spring. There was half a brown cocoanut shell for a dipper, and Bunny thought he had never drunk such cool, sweet water.

Then, when Bunker Blue had eaten his sandwiches and tarts, they started off once more, rumbling along the country roads toward Lake Wanda.