Chapter I. A Breakdown

"Well, Ned, are you ready?"

"Oh, I suppose so, Tom. As ready as I ever shall be."

"Why, Ned Newton, you‘re not getting afraid； are you? And after you‘ve been on so many trips with me?"

"No, it isn‘t exactly that, Tom. I‘d go in a minute if you didn‘t have this new fangled thing on your airship. But how do you know how it‘s going to work--or whether it will work at all? We may come a cropper."

"Bless my insurance policy!" exclaimed a man who was standing near the two lads who were conversing. "You‘d better keep near the ground, Tom."

"Oh, that‘s all right, Mr. Damon," answered Tom Swift. "There isn‘t any more danger than there ever was, but I guess Ned is nervous since our trip to the underground city of gold."

"I am not!" indignantly exclaimed the other lad, with a look at the young inventor. "But you know yourself, Tom, that putting this new propeller on your airship, changing the wing tips, and re-gearing the motor

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