“All aboard!” cried the captain again.

A bell jingled, a whistle tooted and the Swallow began to move away from the dock. She dropped down the river and, a little later, was out on the ocean.

“Once more the deep, blue sea, children!” said Mrs. Bobbsey. “Shall you like the voyage?”

“Oh, very much!” cried Nan, and the others nodded their heads to agree with her.

And then, as they were puffing along, one of the crew called to Captain Crane:

“There’s a man in that motor boat who wants to speak to you! Better wait and see what he wants!”

[CHAPTER XIII—FLOSSIE’S DOLL]

Captain Crane jingled a bell that told the engineer of the motor boat to slow down. Then he steered the Swallow over toward the other motor boat in which was a man waving his hand, as though he wanted the Bobbseys to stop, or at least to come closer, so that he might speak to them.

The Bobbsey twins were wildly excited.

“Hello, Captain Harrison!” called Captain Crane, as soon as the two boats were close enough to talk from one to the other. “Did you want to see me?”