“He’s a fine man. I wish him well. But I’m mighty sorry if his sickness stands in the way of your going with me, Tom,” he grumbled.

“Oh, I might find other reasons, too,” declared Tom, smiling.

“Bless my pocketbook, Tom! name your own price,” cried his eccentric friend.

“It can’t be done, I tell you. You go on to Iceland. When you get back I may have something to show you that you will agree was quite worth my while.”

Even to Mr. Damon the young inventor was not ready to talk about his plans for the flying boat that so engrossed his mind. The visitor remained to dinner; but Tom did not once mention this particular topic which he had been discussing with his father previous to Mr. Damon’s appearance.

The latter, seeing he could not have his way with his young friend in the matter of the voyage to Iceland, did not sulk. As usual he cheerfully—and noisily—discussed plans for the voyage, blessing almost everything and everybody that might be connected with the proposed journey.

“I shall start next week, go to Denmark, and from there take ship to Iceland. I’ve found out already that is the way to do. But I hate traveling alone, as you both know. And I shall want to get back again as soon as possible, for I am curious about this new thing you are studying about, Tom. Will it be a land, water, or air marvel?”

But Tom refused to be drawn into any discussion at all about his idea. “Wait!” was all he would say to his old friend.

CHAPTER IV
A HELPING HAND

Tom Swift, as has been said, did not overlook the value of money and the good uses to which it might be put. But he did not think that he wanted any share in Mr. Wakefield Damon’s venture after the mysterious treasure chest that had been left to him in the interior areas of Iceland. He was telling Mary Nestor about it that evening as he was driving her in his electric runabout through the suburbs of Shopton and out into the country.