granitic formation. Some isolated peaks were 4,000 feet high. Giraffes, antelopes, and ostriches, bounded with surprising agility amongst the acacias, mimosas, "sonahs," and date-trees. After the sterility of the desert, vegetation was regaining the upper-hand. It was the country of the Kailouas, who conceal their faces by a cotton bandage like their dangerous neighbors, the Touaregs.
At ten o'clock at night, after a splendid "run" of 250 miles, the "Victoria "halted above an important town. By the moonlight they could perceive that it was half in ruins, some of the mosques were interlaced here and there with broad bands of white light. The doctor made an observation by the stars, and found he was within the latitude of Aghades.
This town, formerly a great commercial center, had already fallen into ruins at the time Doctor Barth visited it.
The "Victoria," unperceived, took the ground two miles beyond Aghades, in a large field of millet. The night was quiet, and day broke at five o'clock, when a gentle wind began to impel the balloon towards the west and even a little southwards. Ferguson was very anxious to profit by this good fortune. He rose rapidly and fled away along the extended beams of the rising sun.
CHAPTER XXXVIII
RAPID TRAVELING
The 17th of May passed quietly and without incident. The desert was again encountered, a moderate wind impelled the "Victoria" to the southwest, it deviated neither to the right nor left, and its shadow was traced in a direct line upon the sand.
Before his last departure the doctor had taken care to replenish his store of water. He was afraid of not being able to obtain water in those countries infested by the Touaregs. The plain, about 1,800 feet above the level of the sea, depressed towards the south. The travelers having crossed the route from Aghades to Mourzouk frequented by caravans, arrived in the evening in 16° lat. and 4° 55′ long., having had a long and monotonous journey of 180 miles. During that day Joe cooked the last head of game, which
