The harder the wind blows the better the air glider works, and that's
why I think it will be just the thing for Siberia. I'm going to get
right at work on it, and you'll help me; won't you?"

"I sure will. Say, is platinum worth much?"

"Worth much? I should say it was! It's got gold beat now, and the
available supply is very small, and it's getting more scarce. Russia has
several mines, and the metal is of good quality. I've used some Russian
platinum, but the kind Mr. Petrofsky gave me to-day was better than the
best I ever had. If we can only find that lost mine we'll be
millionaires all right."

"That's what we thought when we found the city of gold, but the gold
wasn't of as fine a grade as we hoped."

"Well, nothing like that can happen in this platinum deal. It sure is
rich ore that Mr. Petrofsky and his brother found. Poor fellow! To think
of being an exile in that awful country, not knowing where you may be
sent next. No wonder Mr. Petrofsky wants to rescue him."

"That's right. Well, here we are. I wonder what your father will say
when he hears you're thinking of another expedition, Tom?"

"Oh, he'll want me to go when he hears about the exile."

"And I'm sure my folks will let me go. How about Mr. Damon?"

"I don't believe we can hold him back. It will make a nice party, just
you and I, and Mr. Damon and Mr. Petrofsky. That will leave room for the