“It’s the blue heron; isn’t it?” asked Mildred, laughing.

“That’s what some folks say; but, anyhow,” explained Dan, “the fly-up-the-creek flies so fast that few people have ever seen one in full flight.”

“My goodness! aren’t you smart?” quoth Lettie. “But why not select a pretty name for it?”

“Goodness! not if you are going to sail with us,” cried Billy. “We couldn’t afford such a superabundance of beauty. A pretty name for the boat as well as a couple of howling beauties like you and Mildred——”

But Billy had to dodge Lettie’s vigorous palm then, and for the next few moments he kept well out of her reach.

He and Dan swung the craft around, raised the sail again, tucked the two girls in under the rugs with which they had furnished her, and then shoved the Fly-up-the-Creek out from the land.

“We’re off!” yelled Billy, as he leaped aboard the outrigger. “Bid us a fond farewell, and you can reach us by wire at Lake Karnac.”

Meanwhile Barry Spink and his helper had got the White Albatross under way. She was already running for the mouth of the cove.

“You won’t be so lonely as you think, Billy,” said Miss Parker, pointing a red mitten at Spink’s craft. “Mr. Spink is going to show you boys how an iceboat ought to be handled.”

“Crickey!” ejaculated Billy. “What a get-up!”