"Look at the blood," declared Frank. "Good gracious, that's a bad wound.

Wonder how he got it. How did he get aboard?"

"There's something sticking into his foot," cried Harry. "Look at that thing projecting from his foot. No wonder it bleeds."

Frank and Jack exchanged glances and then at the whispered command of Frank, Jack quickly sat on the head of their visitor while Tom and Harry threw themselves upon his leg. Frank stooped, grasped the foot with one hand and with the other wrenched quickly at the thing that was protruding through the foot of the boy.

A shriek of agony told of the pain he had caused. Frank shook his head in pity at the suffering he had brought about. He glanced at the object he held in his hand, then sat down upon a locker and gave vent to shout after shout of laughter. The boys gazed in open mouthed wonder at the spectacle. Frank's laugh was hearty.

"Frank," cried Jack wonderingly, "what's the matter? Have you gone plumb crazy or are you enjoying this boy's suffering?"

"Neither," a.s.serted Frank. "I think we'll give a little first aid and then thank Arnold here for catching the thief."

"Thank me?" queried Arnold. "I didn't catch him."

"Yes, you did," declared Frank. "But now to help him a bit."

"How shall we treat the foot?" asked Tom gazing ruefully at the deck, now becoming crimson under the stain of blood.

"Get a basin and then some hot water," directed Frank. "I think we'd better wash this out first and then put in some disinfectant. Have you got something to cleanse the wound?"

"Surely have," was Tom's confident answer. "Got a whole chest full of dope here. Help yourself to anything you want!"

"Let's put in a lot of turpentine," suggested Harry. "That's good for snake-bite and other things. We've got plenty of it, too."

Frank took charge of the injured lad, bathing and cleansing the wounded foot. He prepared to bandage the member after giving it a liberal application of turpentine. As he was about to put the bandage in place Harry offered another suggestion.

"Let's put on some of that fat salt pork. I got a rusty nail in my foot once and that's what they put on me."

"Did it work?" asked Tom. "I mean the pork, of course."

"Of course it worked," stoutly maintained Harry.

"All right, then, put on a slice of pork. It surely can't do any harm and may draw out the poison from the foot."

"What poison?" queried Arnold. "What did he step on?"

"I told you," stated Frank in a positive tone, "that Arnold captured this fellow. When you know the facts, you'll agree."

"Let me mop up this smear on the floor," suggested Tom, bringing hot water, "and then we'll all listen. Who's the Sherlock?"

"Take cold water, Tom, for that spot on the floor," was Frank's suggestion. "If you don't the place will be discolored."

"Sure enough, I guess I'm getting old and forgetful," laughed Tom.

"We've had enough excitement today to make me forget most everything, I guess. Tell you what, I'm sleepy, too."

"Now tell us how you happened to say that Arnold caught this chap," Jack demanded of Frank when the stranger had been placed in a comfortable position and the boys had gathered in the after cabin. "I thought Arnold was in the bunk when it happened."

"Well, boys," began Frank producing the object he had taken from the visitor's foot, "Arnold discovered the horse buried upside down in the sand on Pet.i.t Bois and he insisted on bringing the sh.e.l.l."

"All as plain as mud," shouted Arnold. "I left the horseshoe crab sh.e.l.l in the forward cabin. It must have got kicked about during the evening and left with the tail sticking straight up. When this fellow came down the steps, he landed on it kerplunk."

"Right-O!" declared Frank. "At least," he continued, "that's my deduction. If anyone has a better explanation, let him give it."

None was offered, however, the boys seeming to agree that Arnold's explanation had been correct. They all waited to hear further from Frank. He noticed their hesitation and continued:

"I think it would be a good idea to go and interview this lad. He looks to me like a tough customer here for no good."

This suggestion met with instant approval. The boys crowded forward eagerly. One or two automatics were displayed.

"h.e.l.lo, what's this," questioned Harry, picking up an object from the bunk beside the visitor who was lying on his side.

"Why, it's a piece of raw meat," he exclaimed. "Where did that come from? We haven't any beef aboard, have we?"

"Not that I know of," answered Arnold. "It's only a small piece. Give it to Rowdy. He needs a lunch."

"Stop," shouted Jack. "Don't give that to Rowdy."

"Why not?" Arnold questioned in a surprised tone.

"Maybe this chap brought it aboard for that very purpose!"

"What a numbskull I am," scolded Arnold. "Here I might have killed our best friend. I must get the habit of thinking."

"How about it, friend?" queried Jack shaking the stranger by the shoulder. "What have you got on the meat?"

"Nothing," stoutly declared the newcomer, keeping his face turned toward the bulkhead. "I have nothing on it."

"I see," scorned Jack. "You intended to bring the meat aboard to use for a sandwich for yourself. You were about to use our kitchenette for a while, then you would have gone on peaceably."

No answer was vouchsafed to this sally and Jack continued:

"You might as well make a clean breast of the whole matter. We know you.

You were aboard our boat once before. We are several gallons of gasoline short because of your kindness. 'Fess up, now."

"I guess I know a way to make him talk," declared Frank. "Come here until I suggest a method that I hope will be effective."

Frank and Jack withdrew a little from the group about the berth holding the stranger. After a moment's consultation they returned and Jack again addressed the injured boy in a friendly tone:

"Come, now, Carlos Madero, or whatever your name may be, we want to treat you right, but we're going to have some information if we have to wring your neck to get it. We don't care about doing you any harm, especially since you're already wounded, but you will have to explain your presence here at this hour of the night. Why did you come aboard barefooted and unannounced?"

"I am not afraid of your threats. You can't do anything to me. Besides, you're Boy Scouts and you wouldn't harm me."

"Never mind about that just now," interrupted Jack. "We can protect ourselves even if we are Boy Scouts. You'll learn that."

"Sure he'll learn it," chimed in Tom. "He'd better not monkey too far with this crowd. We'll make him eat that meat."

"G.o.d idea," declared Jack. "Arnold, please start the coils and fry this chunk of meat for out friend. He's hungry."

With these words, Jack drew an automatic and displayed it for the benefit of the visitor. He had no intention of using the weapon, but felt it might have a salutary effect. In this he was right.