It seemed to Henry as though he simply could not endure to remain idle. Naturally he wanted to get to the bottom of the mystery of the field coil. But what he should do or what he should try to do he could not even imagine. To talk about the matter was useless. That would get him nowhere and advertise something that was known only to a few. Furthermore the captain himself was continuing his investigations, and had given strict orders not to talk about the affair.

When Henry chanced to pass the stateroom of the wireless operators, he thought he would stop and inquire how Mr. Sharp was. The latter had quite evidently been sick the preceding day, though he stuck to his post. Henry knocked at the door. A feeble voice invited him to come in. Henry entered, and found the chief electrician alone. Belford was on watch. Henry did not know where Black was. It did not matter. He saw at once that Mr. Sharp was very sick. His cheeks were flushed. Henry stepped to the bunk and laid his hand on the man’s forehead. It was dry and very hot, and his eyes had that burned-out, almost plaintive look, that fever sufferers sometimes have.

“Why, Mr. Sharp,” said Henry, “you’re sick; you’re real sick. You must have a high fever.”

“I guess that I am about all in,” agreed the chief electrician. “I’ve been taking some dope that the doctor gave me for this cold, and I thought that I could throw it off, but I guess it’s got me.”

“Have you reported sick to the doctor?”

“No. I thought a while ago that I had better do so, but there wasn’t any one here to take a message, and I felt so rocky I just hadn’t gumption enough to get up and go to the doctor myself.”

“Let me call the doctor for you,” urged Henry.

“All right. I’ll be obliged to you.”

Delighted to find something to do, Henry stepped from the room and hurried aft to the wardroom. There he found the doctor, who came at once. When the latter had taken Mr. Sharp’s temperature and examined him otherwise, he said: “Sparks, it’s you for the sick bay, quick. What do you mean by lying here half dead and not sending for help?”

“You can’t put me in any sick bay,” protested the chief electrician weakly. “I’ve got to go on duty shortly.”