But just then there was a shrill scream from Flossie, and Freddie’s voice could be heard shouting:

“Oh, there he goes! Now he’s in!”

Bert and Nan looked at each other with alarm. They heard a splashing of water.

“One of them has fallen in!” gasped Nan.

Guided by the shouts of the smaller twins, the older ones soon reached the place where Freddie and Flossie had been playing. As they neared the spot they heard laughter mingled with the shouts.

“I don’t believe either one of them fell in,” said Bert, as he slowed up a bit to wait for his sister.

“It sounded so,” she said. “And we heard them say so.”

Wondering what had happened to cause the splashing, the two hurried on and, pushing their way through the bushes that fringed the edge of the brook, Bert and Nan saw their brother and sister standing on the shore. But there was something in the water that excited them, for they were running up and down poking long sticks into the brook.

“What’s the matter?” called Nan.

“Did anybody fall in?” Bert wanted to know.