"Unlucky augury," I said, interested in the story, which affected me nearly.
"An augury of the catastrophe which was later to cost this unfortunate man his life," replied the unknown sadly.
"Have you never experienced anything like it?"
"Never."
"Bah! Misfortunes sometimes occur unforeshadowed!" added my companion. He then remained silent.
We were drifting southward, and Frankfort had already passed from beneath us.
"Perhaps we shall have a storm," said the young man.
"We shall descend before that," I replied.
"Better to ascend. We shall escape it more surely." And two more bags of sand were hurled into space.
The balloon rose rapidly, and stopped at twelve hundred yards. I became colder; and yet the sun's rays, falling upon the surface, expanded the gas within, and gave it a greater ascending force.
"Fear nothing," said the unknown. " We have still three thousand five hundred fathoms of breathing air. Besides, do not trouble yourself about what I do."
I would have risen, but a vigorous hand held me to my seat. "Your name?" I asked.
"My name? What matters it to you?"
"I demand your name!"
"My name is Erostratus or Empedocles, whichever you choose!"
This reply was far from reassuring. The unknown, besides, talked with such strange coolness that I anxiously asked myself whom I had to deal with.
"Monsieur," he continued, "nothing original has been imagined since the physicist Charles. Four months after the discovery of balloons, this man had invented the valve which permits the gas to escape when the balloon is too full, or when you wish to descend; the car, which aids the management of the machine; the netting, which holds the envelope of the balloon, and divides the weight over its whole surface; the ballast, which enables you to ascend, and to choose the place of your landing; the india-rubber coating, which renders the tissue impermeable; the barometer, which shows the height attained. Lastly, Charles used hydrogen, which, fourteen times lighter than air, permits you to pene-
