"And I believe you are the one who named her," he said. And from that moment, though he grew to be very fond of the three other children, Margery was his especial pet and friend.

Mr. Dean left them after this, and returned, bringing the cake and Sheila. The little dog was introduced to Jack in proper form, shook hands with each of her guests, walking over to them on her hind legs to do so, and graciously accepted cake from the children, first sniffing each piece cautiously, like the dainty, well-fed creature that she was.

Mr. Dean touched Amy's badge inquiringly.

"Might one ask what that means?" he said.

"It's a secret," began Amy, looking hesitatingly at the others.

"Oh, I beg your pardon," said Mr. Dean.

"But I think we could tell Mr. Dean, couldn't we?" suggested Margery.

"Yes," replied all the other members of the club promptly. There was no question but that the investigating committee had made up its mind, individually and collectively, to a favorable report on the stranger.

"It is the Happy Thought Club," explained Amy, indicating the initials on her badge; "and we have a post-office."