"GO DOWN AT ONCE"

"Oh, they won't get hurt," said another deeper voice, and the children turned their eyes toward a second mound, on top of which sat a plump prairie-dog whose reddish fur was tipped with white on the end of each hair. He seemed to be quite old, or at least well along in years, and he had a wise and thoughtful look on his face.

"They're humans," said the mother.

"True enough; but they're only human children, and wouldn't hurt your little ones for the world," the old one said.

"That's so!" called Twinkle. "All we want, is to get acquainted."

"Why, in that case," replied the old prairie-dog, "you are very welcome in our town, and we're glad to see you."

"Thank you," said Twinkle, gratefully. It didn't occur to her just then that it was wonderful to be talking to the little prairie-dogs just as if they were people. It seemed very natural they should speak with each other and be friendly.