"That is something I cannot tell," was the reply.

"To Central America?" asked Dick.

"Yes."

"What part?"

"I don't know, and will not find out until I open my sealed orders. Of course, I don't belong to the navy, but this submarine, which is one of the most successful long-cruising boats ever launched, places me in a position to be of use to Uncle Sam. I have therefore placed the boat and myself and crew at my country's service. If we perform well our mission, then I shall be able to dispose of the Grampus, and all my own individual patents, for a very large sum. In view of that, and my firm belief that the next cruise will be a complete success, I can offer you lads a fancy figure to go with me. What do you say?"

"Think you can stand it, Carl?" asked Matt.

"Shtand id?" cried Carl. "Vy, bard, I vas as goot as efer."

"What's your word, Dick?" asked Matt.

"I'll sign the articles," said Dick.

"And so will I," added Matt.