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CHAPTER VIII
OFF FOR AFRICA
Higher and higher went the Black Hawk, far above the earth, until the old elephant hunter, looking down, said in a voice which he tried to make calm and collected, but which trembled in spite of himself:
"Of course I'm not an expert at this game, Tom Swift, but it looks to me as if we'd never get down. Don't you think we're high enough?"
"For the time being, yes," answered the young inventor. "I didn't think she'd climb so far without the use of the gas. She's doing well."
"Bless my topknot, yes!" exclaimed Mr. Damon. "She beats the Red Cloud, Tom. Try her on a straight-away course."
Which the youth did, pointing the nose of the craft along parallel to the surface of the earth, and nearly a mile above it. Then, in-
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