for this platinum. Have you set a price on it? It is worth much more
than the ordinary kind."

"The price is nothing to you," replied the Russian, with a smile. "I am
only too glad to help you fix your aeroplane. Will it take long? I
should like to watch you."

"Come along," invited Tom. "I can soon have it going again, and I'll
give you a ride, if you like."

"No, thank you, I'm hardly up to that yet, though I may be some day. The
machine I made never flew well and I had several bad falls."

Tom and Ned worked rapidly on the magneto, and soon had replaced the
defective bits of platinum.

"If the Russians had such a machine as this maybe they could have gotten
to that mine," suggested Ned, who was very proud of Tom's craft.

"It would be useless in the terrific winds, I fear," answered Ivan
Petrofsky. "But now I care little for the mine. It is my brother whom I
want to save. He must be in some of the Siberian mines, and if I had
such a craft as this I might be able to rescue him."

Tom Swift dropped the file he was using. A bright light sparkled in his
eyes. He seemed strangely excited.

"Mr. Petrofsky!" he cried, "would you let me have a try at finding your
brother, and would you come with me?"