"Chet and Lance, I declare!"
"Laura said she and Jess were coming over to the island to-day; funny the boys aren't with them."
"Then somebody else would have to go with Purt, for he could never run that motor alone. Oh, look!"
As Dorothy spoke there was a big puff of smoke from the middle of the launch and they heard the boys shouting excitedly.
AS DOROTHY SPOKE THERE WAS A BIG PUFF OF SMOKE FROM THE MIDDLE OF THE LAUNCH.
"Now you've done it, Purt!" was an exclamation the twins heard.