"No. You had trouble over fires before," advised Dorothy Lockwood.

"That's so," agreed Dora.

"Don't mention fire again!" exclaimed Jess. "That's why we lost the race before—because you could not steer for us, Bobby."

Laura and Lance Darby took Eve and Otto Sitz with them in Lance's nice boat. There were two pairs of sculls and Otto managed to row very well in the bow. Of course Chet took Jess in his boat, and the remainder paired off as fancy beckoned. But the twins paddled their cedar canoe.

And few of the fleet of small craft were propelled to the island in better shape than Dora's and Dorothy's canoe. The others cheered the pretty girls as they forced their craft through the rippling water. The management of a canoe—especially a double canoe—is not so easy as it appears. But the Lockwood twins had taken to that form of aquatic sports very kindly, and there really were few canoe crews in Centerport who handled their craft as well.

The fleet of boats crossed the lake in a short time and, headed by the twins' canoe, reached the eastern end of the island. They swept into the cove where the girls had seen, the previous Saturday, the rough-looking, bewhiskered man upon the shore. Right here under the Boulder Head was the mouth of the cavern from which the island obtained its name.

As the twins swept their canoe on with easy strokes, Dora suddenly uttered a cry of excitement.

"See there, Dory!" she said.

"See where?" demanded her sister, craning her neck to see over Dora's shoulder.

"There! Down in the water! The sunken boat!"