ceived the letter from Russia informing him of the whereabouts of the kidnapped Russian, and he had acted at once.
His father sanctioned the plan of going to the rescue in one of Tom's several airships and, Mr. Damon, having been on hand, at once agreed to go. Of course Ned went along, and they had picked up the private detective in New York, where he was vainly seeking a clew to the whereabouts of Mr. Petrofsky.
Now the young inventor and his friends were hovering over the sandy stretch of coast that extends from Sandy Hook down the Atlantic seaboard. They were looking for a small fishing hamlet on the outskirts of which, so the Russian letter stated, was situated the lonely hut in which Mr. Petrofsky was held a prisoner.
"Do you think you can pick it out from a distance, Tom?" asked Mr. Damon, as the airship floated slowly along. It was not the big one they intended taking on their trip to Siberia, but it was sufficiently large to accommodate the four and leave room for Mr. Petrofsky, should they succeed in rescuing him.
"I think so," answered the young inventor.
In the letter from Russia a comparatively accurate description of the prisoner's hut had been given, and also some details about his guards.
