the ends, and they beat them to sound a warning, or before going into battle. It makes a great noise."
"Do you think they want to fight us?" asked Ned, looking anxiously at Tom, and then toward where his rifle stood in a corner of the cabin.
"No, probably that drum was beaten by some of the native priests," explained the hunter. "The natives are very superstitious, and likely they took us for an evil spirit, and wanted to drive us away."
"Then we'll hustle along out of their sight," said Tom, as he went to the pilot house to increase the speed of the airship, for he had been letting it drift along slowly to enable the adventurers to view the country over which they were passing. A few minutes later, under the increased force of the machinery, the Black Hawk left the native village, and the crowd of frightened blacks, far behind.
The travelers passed over a succession of wild stretches of forest or jungle, high above big grassy plains, over low but rugged mountain ranges, and big rivers. Now and then they would cross some lake, on the calm surface of which could be made out natives, in big canoes, hollowed out from trees. In each case the blacks
