CHAPTER TWENTIETH. The Celestial Bottle.—The Fig-Palms.—The Mammoth Trees.—The Tree of War.—The Winged Team.—Two Native Tribes in Battle.—A Massacre.—An Intervention from above. The wind had become violent and irregular; the balloon was running the gantlet through the air. Tossed at one moment toward the north, at another toward the south, it could not find one steady current. “We are moving very swiftly without advancing much,” said Kennedy, remarking the frequent oscillations of the needle of the compass. “The balloon is rushing at the rate of at least thirty miles an hour. Lean over, and see how the country is gliding away beneath us!” said the doctor. “See! that forest looks as though it were precipitating itself upon us!” “The forest has become a clearing!” added the other. “An