CHAPTER IV
"LOOK OUT FOR MY RIVAL!"
"You'll go in an airship of course; won't you, Tom?" asked Mr. Damon, when they had pulled their chairs up around a library table, and Mr. Preston had taken some papers from his pocket.
"An airship? No, I don't believe I shall," replied the young inventor. "In the first place, I'm a bit tired of scooting through the air so much, though it isn't to be denied that it's the quickest way of going. But in South America there are so many jungles that it will be hard to find a level starting ground for a take-off, after we land. Of course we could go up as a balloon, but this expedition is going to be different from any we were ever on before."
"How so?" asked Ned.
"Well, in the first place we've got to start at one end of a trail, and make careful inquiries all along the way. It isn't like when we went for the city of gold. There we had to look for a certain ruined temple, which was the landmark
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