"Why do they ring?" asked the little boy squirrel.

"To call the little ants and lightning bugs to school," spoke Uncle Wiggily, and Billy smiled. He was beginning to see that there were more things in the woods than he had dreamed of, even if he had scampered here and there among the trees ever since he was a little squirrel chap.

On and on through the woods went the bunny uncle and Billie. They picked big, leafy ferns to fan themselves with, and then they drank with green leaf-cups from a spring of cool water.

But no sooner had Billie taken the cold water than he suddenly cried:

"Ouch! Oh, dear! Oh, my, how it hurts!"

"What is it?" asked Uncle Wiggily. "Did you bite your tongue or step on a thorn?"

"It's my tooth," chattered Billie. "The cold water made it ache again. I need to go to Mr. Stubtail, the bear dentist, who will pull it out with his long claws. But I've been putting it off, and putting it off, and now—Oh, dear, how it aches! Wow!"

"I'll cure it for you!" said Uncle Wiggily. "Just walk along through the woods with me and I'll soon stop your aching tooth."

"How can you?" asked Billie, holding his paw to his jaw to warm the aching tooth, for heat will often stop pain. "There isn't anything here in the woods to cure toothache; is there?"

"I think we shall find something," spoke the bunny uncle.