the very people whom Mr. Petrofsky thinks are his friends are spies, and they send word to headquarters of every move he makes."
"Why don't you warn him?"
"He knows it as well as I do. The trouble is you can't tell who the spies are until it's too late. I'm glad I'm not mixed up in that sort of thing. If I can get to Siberia, help Mr. Petrofsky rescue his brother, and get hold of some of that platinum I'll be satisfied. Then I won't go back to the land of the Czar, once I get away from there."
'That's right. Well, let's go back and work on the glider."
"And we'll have Eradicate patroling about the shop to make sure we're not spied on again."
"By golly! Ef I sees any ob 'em, I suah will pinch 'em!" cried the colored man, as he clicked the pliers.
But there was no further disturbance that night, and, when Tom and Ned ceased work, they had made good progress toward finishing the air glider.
The big airship was almost ready to be given a trial flight, with her motors tuned up to give more power, and as soon as the Russian exile had a little more definite information as to the possible whereabouts of his brother, they could start.
