Smaller than Sheik Abraham’s tent, there was no dividing curtain, as here was no need for a selemlik. On two divans had slept the Professor and Ben Hassim. Everything was in wildest confusion. Three long narrow trunks were broken open and their contents of clothing, books, maps and scientific instruments were scattered about. These things the boys put aside for later inspection. “Where was his radio?” asked Jack. A cry from Bob answered. “Look here, fellows,” called the big husky. “Smashed as if with an ax. A perfect ruin if ever I saw one.” They hastened to his side. The broadcasting set which the boys had made themselves and which had been their gift to Professor Souchard, had been made to fit into one—the smallest—of the three shallow trunks. It had included a folding table on which it was to be mounted. The table had been set up in one corner of the tent. Instead of dry cells, the current was supplied by a motor. Everything had been properly set up in the method into which the boys had drilled the Professor. The key had been screwed to the middle of the table and near the front edge. Back of it had been placed the high tension condenser, with the oscillation transformer still farther in the rear. To the left of the oscillation transformer had been placed the alternating current transformer and in front of it was the quenched gap. Even though the table and its contents had been smashed, as if with an ax, this much could be seen. Doubtless, too, the wiring had been done according to directions. Otherwise, the Professor would not have been able, of course, to communicate with Frank. But the wrecking of the station had been so thoroughly carried out that it was impossible to tell. Where the wires from the motor had been connected with a single-throw, double-pole switch, which in turn was connected with the primary coil of the alternating power transformer and with one post of the key, the other post of which was connected with the switch, there was now only a mass of tangled and chopped wires. As for the connections between the motor of the rotary spark gap to the power circuit, and between the secondary coil, the quenched spark gap, the condenser and the primary coil of the oscillation transformer, thus completing the closed oscillation circuit, they too, were a tangled mess. The telephone instrument wired as an alternative to the key, thus permitting the sending either of telegraph or conversation, had been ripped away and ground into the hard-packed earth of the floor. At first it could not be found, but Frank stubbed a foot against it finally. The three boys looked at each other, while Ali stood to one side. “If you can make anything out of that, you fellows,” said Bob, “you’ll be going some. That’s all I can say.” Jack shook his head dubiously.