something of that sort."

"Submarine work? Bless my hydrometer, I should say so!"
exclaimed the eccentric man. "And not only in submarine, but in
aeroplane! but you don't need any aeroplanes, my dear Mr.
Hardley. It's the submarine end of it that you are interested in,
as far as Tom Swift is concerned. Now go ahead and tell him what
you told me, and how many millions there are in it."

"Very well," assented the visitor. "Have you ever had any
experience in recovering treasure from sunken wrecks?" he asked
Tom.

"Yes," was the answer. "And it is curious that you should ask
me that, for my friend here, Ned Newton, and I were just talking
about that very matter. Here's what brought it up," and Tom
showed the page from the Sunday paper.

"Hum! Yes!" musingly remarked Mr. Hardley. "That's all very
well. Part of it is true; but I imagine most of it is the work of
imagination of some enterprising reporter. Of course there is no
question but that there are untold millions on the bottom of the
ocean. The only trouble, as I think you will agree with me, Mr.
Swift, is in coming at the money."

"Exactly," said Tom.

"And will you bear me out when I say that if the wreck of a
treasure ship could be exactly located in water that is not too
deep, half the trouble would be solved?" asked Mr. Hardley.