Betty and Bobby selected a flat-bottomed row-boat and for passenger they took Frances, who offered to help row if they became tired.
Louise and Constance chose another canoe.
They headed north, and once out in the center of the lake, paddled and rowed steadily. Betty's rowing experience was limited, but Bobby was proud of her "stroke," and soon taught her chum the secret of handling the oars.
"Ship ahoy!" shouted Bobby presently.
Libbie jumped and looked ahead anxiously.
"It's only the boys," she said dully.
An eight-oared rowing shell shot down to them, and the freckled-faced coxswain, Gilbert Lane, one of the boys the girls had met at Bob and Tommy's "party," grinned cheerfully.
"Where you going?" he asked, resting a friendly hand on the rowboat's rim.
Bobby described an arc with her oar that incidentally showered the questioner with shining water drops.
"We're out for adventure," she answered airily.