Chapter I. Tom is Puzzled

"What‘s the matter, Tom? You look rather blue!"

"Blue! Say, Ned, I‘d turn red, green, yellow, or any other color of the rainbow, if I thought it would help matters any."

"Whew!"

Ned Newton, the chum and companion of Tom Swift, gave vent to a whistle of surprise, as he gazed at the young fellow sitting opposite him, near a bench covered with strange-looking tools and machinery, while blueprints and drawings were scattered about.

Ranged on the sides of the room were models of many queer craft, most of them flying machines of one sort or another, while through the open door that led into a large shed could be seen the outlines of a speedy monoplane.

"As bad as that, eh, Tom?" went on Ned. "I thought something was up when I first came in, but, if you‘ll excuse a second mention of the color scheme, I should say it was blue--decidedly blue. You look as though you had lost your last friend, and I want to assure you that if you

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