Before any further comment could be made, the boy on the plank shot out over the edge of the roof and dived, with a mighty splash, into the deep water of the pool, adjoining which Canoe Lodge was built.

“He’ll be drowned!” cried Grace, wringing her plump hands.

“It’ll serve him right if he is!” exclaimed Bessie. “What business had he on our roof, I want to know?”

“Poor Tubby!” cried Wyn, choked with laughter.

“Isn’t he the most ridiculous creature that ever was?” rejoined Frank. “See there! he’s come up to blow like a frog.”

“It’s a whale that comes up to blow,” Wyn reminded her.

“Well! isn’t Tubby Blaisdell a regular whale of a boy?” returned the black-eyed girl.

“There’s Dave!” cried Mina.

“I knew the two wouldn’t be far apart!” sniffed Bess Lavine.

“He’s got a boat and is going to Tubby’s rescue,” cried Grace.