Shirley took one look at him, and gave a cry of surprise.

The newcomer was Captain Von Blusen!

CHAPTER XXIII.—THE SEARCHING PARTY.

A long blast from the whistle of the Yucatan broke the stillness of late afternoon.

Mr. Willing, Colonel Ashton and Dick, who were peering shoreward from the deck of the steamer with straining eyes, looked anxiously at each other.

“What can be detaining them?” exclaimed the former.

“I am sure I don’t know,” returned Colonel Ashton. “They probably will be here in a few minutes.”

A boat put off from shore; it was the last of the Yucatan’s small craft, which had been awaiting the return of late passengers. It was too far away for the watchers to identify those aboard it.

Mr. Willing breathed a sigh of relief.

“I guess they are coming at last,” he said.