“He’s looking for treasure,” was Bob’s opinion.
“More likely a place where he can safely sink some of Uncle Sam’s ships!” exclaimed Jerry. “If ever we get out of this we’ll have to inform the war authorities, to put them on their guard.”
“That is right,” assented Mr. Sheldon. “I hardly believe though, that Dr. Klauss is looking for a marine graveyard. I think he has some scientific object in view.”
Just what the German’s object was, those watching him could not determine. He soon disappeared around the bow of the boat, and became lost to sight. Jerry, who had learned how to do it, then turned on the lights to illuminate the space around the boat, and for some time they watched the fishes, and other forms of life, at the bottom of the sea.
They talked over their precarious situation, and agreed that if another appeal to Dr. Klauss should not be heeded they would see if the crew would not join them in a mutiny—a justifiable mutiny.
“We’ll have to secure this madman,” said Mr. Sheldon, “and do the best we can to navigate the boat ourselves. I only wish I knew where we are.”
“I think we will soon learn,” spoke Jerry. “We can’t stay under water forever.”
Dr. Klauss came back into the submarine in about an hour, the process being reversed to give him entrance. He said nothing about his trip, nor whether he had accomplished his purpose, but remarked:
“The next time, Professor Snodgrass, I hope you will come with me. And some of you boys—I have several diving suits and, you have seen, they are perfectly safe.”