The tempests of the tropics develop with a rapidity equalled only by their violence. A second flash of lightning rent the darkness, and was followed by a score of others in quick succession. The sky was crossed and dotted, like the zebra’s hide, with electric sparks, which danced and flickered beneath the great drops of rain.
“We have delayed too long,” exclaimed the doctor; “we must now pass through a zone of fire, with our balloon filled as it is with inflammable gas!”
“But let us descend, then! let us descend!” urged Kennedy.
“The risk of being struck would be just about even, and we should soon be torn to pieces by the branches of the trees!”
“We are going up, doctor!”
“Quicker, quicker still!”
In this part of Africa, during the equatorial storms, it is not rare to count from thirty to thirty-five flashes of lightning per minute. The sky is literally on fire, and the crashes of thunder are continuous.
The wind burst forth with frightful violence in this burning atmosphere; it twisted the blazing clouds; one might have compared it to the breath of some gigantic bellows, fanning all this conflagration.
Dr. Ferguson kept his cylinder at full heat, and the balloon dilated and went up, while Kennedy, on his knees, held together the curtains of the awning. The balloon whirled round wildly enough to make their heads turn, and the aeronauts got some very alarming jolts, indeed, as their machine swung and swayed in all directions. Huge cavities would form in the silk of the balloon as the wind fiercely bent it in, and the stuff fairly cracked like a pistol as it flew back from the pressure. A sort of hail, preceded by a rumbling noise, hissed through the air and rattled on the covering of the Victoria. The latter, however, continued to ascend, while the lightning described tangents to the convexity of her circumference; but she bore on, right through the midst of the fire.
“God protect us!” said Dr. Ferguson, solemnly, “we are in His hands; He alone can save us–but let us be ready for every event, even for fire–our fall could not be very rapid.”
The doctor’s voice could scarcely be heard by his companions; but they could see his countenance calm as ever even amid the flashing of the lightnings; he was watching the phenomena of phosphorescence produced by the fires of St. Elmo, that were now skipping to and fro along the network of the balloon.
The latter whirled and swung, but steadily ascended, and, ere the hour was over, it had passed the stormy belt. The electric display was going on below it like a vast crown of artificial fireworks suspended from the car.
Then they enjoyed one of the grandest spectacles that Nature can offer to the gaze of man. Below them, the tempest; above them, the starry firmament, tranquil, mute, impassible, with the moon projecting her peaceful rays over these angry clouds.
Dr. Ferguson consulted the barometer; it announced twelve thousand feet of elevation. It was then eleven o’clock at night.
“Thank Heaven, all danger is past; all we have to do now, is, to keep ourselves at this height,” said the doctor.
“It was frightful!” remarked Kennedy.
“Oh!” said Joe, “it gives a little variety to the trip, and I’m not sorry to have seen a storm from a trifling distance up in the air. It’s a fine sight!”
Chapter Seventeenth.
The Mountains of the Moon.–An Ocean of Verdure.–They cast Anchor.–The Towing Elephant.–A Running Fire.–Death of the Monster.–The Field-Oven.–A Meal on the Grass.–A Night on the Ground.
About four in the morning, Monday, the sun reappeared in the horizon; the clouds had dispersed, and a cheery breeze refreshed the morning dawn.
The earth, all redolent with fragrant exhalations, reappeared to the gaze of our travellers. The balloon, whirled about by opposing currents, had hardly budged from its place, and the doctor, letting the gas contract, descended so as to get a more northerly direction. For a long while his quest was fruitless; the wind carried him toward the west until he came in sight of the famous Mountains of the Moon, which grouped themselves in a semicircle around the extremity of Lake Tanganayika; their ridges, but slightly indented, stood out against the bluish horizon, so that they might have been mistaken for a natural fortification, not to be passed by the explorers of the centre of Africa. Among them were a few isolated cones, revealing the mark of the eternal snows.