“But you do know!” cried Jane. “You could tell us if you would!”

“Yes, I could,” Mr. Vincent replied slowly. “I’m wondering, though, if the fun might not be spoiled.”

“Oh, no!” cried all the Brownies together.

“We’re not children,” added Veve. “It was fun to say that the brownies built our tree house, but we always knew better.”

Sam Vincent stood gazing down at the girls, his eyes twinkling.

“It was a very large brownie who built this house,” he said. “One about my size.”

“You did it!” shouted Veve. “Oh, that doesn’t surprise me one bit!”

“Or me either!” cried Connie. “I think I suspected it all the time. Only I couldn’t quite be sure.”

The Brownies gazed at Miss Gordon and saw that she did not look surprised either.

“I’ve known for quite a while,” she admitted with a smile. “I didn’t tell you because it wasn’t my secret to relate.”