"We'll have to defer going ash.o.r.e, or report our plans to the captain,"

said Bob Vilett about eight o'clock, coming up on deck with a wry face.

He was in overalls and his hands covered with oil. "No go, Dave," he reported.

"You mean you can't join me?" asked Dave, in disappointment.

"That's it, Dave. There's work till twelve. I've got to stay. Say, why don't you tell the captain your idea and have him send men and a boat after Schmitt-Schmitt?"

"No," said Dave, "Captain Broadbeam wouldn't entertain the project for a moment. He is a first-cla.s.s captain, but hint at anything outside of his ship, and he won't take the risk."

"What are you going to do, then?"

"Try it alone."

"Be careful, Dave. Don't undertake too much. You can never manage Schmitt-Schmitt alone. Why don't you impress Stoodles into service?"

"Mr. Stoodles is willing enough," answered Dave, "but he might bungle.

It will be all I can do to get off the _Swallow_ alone."

Dave managed this, however, a little later, without discovery. Once on the sand flat, he dragged some planks and ropes the ballast crew had left there to the other side of the island. Dave constructed quite a raft and pushed it into the water. Swimming, he propelled it before him. Within half an hour he was on the wooded island.

The first thing that caught his eye was a blue light strung from a tree at the end of the island nearer the town. Here there was a favorable natural landing-place.

"The bunting signal didn't attract attention," reasoned Dave, "so Schmitt-Schmitt has tried the lantern. Wonder if he is at the hut? I'll work my way around that direction and find out."

Dave had the bold idea in mind of capturing this man. As he went along he thought of plan after plan. If he could get Schmitt-Schmitt helpless in his power, he could convey him to the _Swallow_ on the raft.

"The very thing," said Dave gladly, as he neared the vicinity of the hut. Lying across the top of some bushes was a fishing net. It had long rope ends. Dave with his pocket knife cut these off and thrust them in his pocket.

"Hey, what are you up to there?"

Dave thrilled at the sharp call, and turned quickly to face his challenger.

It was Schmitt-Schmitt. He had abruptly emerged from the greenery surrounding the hut. He carried a big cudgel, and as the clear moonlight revealed the face of the intruder plainly he uttered a quick gasp.

"Ha, I know you!" cried Schmitt-Schmitt, advancing with a scowling face.

"It seems so," answered Dave coolly, cautiously retreating. "You are Mr. Gerstein."

"No, you don't!" spoke the man, with a speedy leap forward.

Dave dodged, but not soon enough. The cudgel came down directly on top of his head. He saw stars, sank flat, and knew no more for fully five minutes.

Then, his lower limbs wound round and round with ropes, he struggled upon the floor of a hut.

At a table on which burned a candle sat Schmitt-Schmitt. He had just opened a bottle of lime juice and was about to pour some of its contents into a gla.s.s to refresh himself.

He suspended operations, however, as Dave struggled to an upright position, attracting his attention.

"Well," he spoke with a coa.r.s.e chuckle, "how did that wallop suit you?"

Dave rubbed his sore head and made a wry grimace.

"You don't treat visitors very politely, do you?" he said.

"You're a spy, you are," spoke Gerstein sullenly, "and don't you deny it. I know you. Now then, what brought you here?"

"What brought you?" retorted Dave.

"Don't you get saucy," warned Schmitt-Schmitt. "All along you did the big things that were done in baffling the Hankers. I hear, too, you have been pretty smart with your tricks since you came to Minotaur Island."

"Of course I've been trying to do all I could to protect my rights,"

said Dave. "I knew you were in hiding here."

"Ha! eh?" exclaimed Schmitt-Schmitt, p.r.i.c.king up his ears. "How did you know that?"

"Oh, we have kept track of you," answered Dave lightly. "As soon as we found you were back of the governor and the pilot in bothering us, we naturally watched you."

Schmitt-Schmitt stared in stupefaction at Dave.

"Knew it, did you?" he muttered.

"Of course we did. We knew what you were up to. Now I can tell you, Mr. Gerstein, you will never get that treasure away from the Windjammers' Island, no matter how hard you try."

"Treasure! The Windjammers' Island!" gasped the man.

"How--when--where--the--the treasure was lost at sea."

"Not a bit of it, as you and I both know," a.s.serted Dave blithely, reading in the confusion and excitement of the man a confirmation of his suspicions. "I say the _Swallow_, with or without me, sails in search of that treasure at daylight. Come, sir, you have gone in with a measly crowd who will only rob you in the end. Come to Captain Broadbeam, save us the trouble of a long search, and my father will pay you all right."

Schmitt-Schmitt got up and paced the floor. He seemed thinking over what Dave had suggested. His face, however, gradually resumed its customary ferocity and cunning.

"No," he said finally, striking the table with his fist and taking in his captive's helpless situation with a good deal of satisfaction. "I have the upper hand. I keep it."

"What upper hand?" asked Dave.

"You are my prisoner. Soon the pilot will be here in response to my signal with his launch. I will take you to the island with me. I will hide you. They will not get along so grandly without you. They will delay to search for you, and delay is all I ask. Yes, yes, that is the programme."

Some whistles from craft in the bay echoed out. Schmitt-Schmitt went outside, apparently to see if some answer was coming to his signal.

"I am in it--deep," mused Dave. "Pshaw! I hate to think I shall delay and bother Captain Broadbeam."

Dave found that the ropes securing him were not very tightly arranged.

They had been drawn to a loop about his waist and caught with snap and hook behind.

"If I had time I could work loose," he thought. "I have not time, so I suppose I must wait meekly and take what comes to me. Oh, by the way--that's an idea!"

The "idea" in question was suggested by a glance at the bottle and gla.s.s on the table. Dave's eyes sparkled. He fumbled under the ropes and brought out wrapped up in a fragment of paper the sample of opium he had discovered the night previous.

Frog-like he began hitching himself across the floor. Dave kept his eye anxiously fixed on the open doorway. He got to the table, reached up, dropped some grains of the drug into the gla.s.s there, and nimbly as he could hitched his way back to his former position.