proceed as quietly as possible, the craft was being used as a dirigible balloon, and the propellers were whirled around by means of a small motor, worked by a storage battery. While not much power was obtained this way, there was the advantage of silence, which was very necessary.
Slowly the Black Hawk sailed on through the night. In silence the adventurers waited for the moment of action. They had their weapons in readiness. Mr. Durban was to work the electric rifle, as all Tom's attention would be needed at the machinery. As soon as the craft had made a landing he was to leap out, carrying a revolver in either hand, and, followed by Tomba, would endeavor to gain entrance to the hut, break through the flimsy grass-woven curtain over the doorway, and get Mr. and Mrs. Illingway out. Ned, Mr. Damon and the other two men would stand by to fire on the red pygmies as soon as they commenced the attack, which they would undoubtedly do as soon as the guards of the captives raised the alarm.
The airship was in darkness, for it would have been dangerous to show a light. Some wakeful dwarf might see the moving illumination in the sky, and raise a cry.
"Mos' dere," announced Tomba at length. And then, for the first time, Ned and Tom had
