They were loath to end the lovely scene, and would fain have remained where they were while the earth revolved again; but, remembering that their friends must by this time be waiting, they shut off the repulsion from the earth.
"We need not apply the apergy to the earth until quite near," said Ayrault, "since a great part of the top speed will be taken off by the resistance of the atmosphere, especially as we go in base first. We have only to keep a sufficiently strong repulsion on the dome to prevent our turning over, and to see that our speed is not great enough to heat the car."
When about fifty miles from the surface they felt the expected check, and concluded they had reached the upper limits of the atmosphere. And this increased, notwithstanding the decrease in their speed, showing how quickly the air became dense.
'
The return
When about a mile from the earth they had the Callisto well in hand, and allowed it to descend slowly. The ground was already black with people, who, having learned where the Callisto was to touch, had hastened to Van Cortlandt Park.
"I am overjoyed to see you," said Sylvia, when she and Ayrault met. "I had the most dreadful presentiment that something had gone wrong with you. One afternoon and evening I was so perplexed, and during the night had a series of nightmares that I shall never forget. I really believed you were near me, but your nature seemed to have changed, for, instead of its making me happy, I was frightfully distressed. The next day I was very ill, and unable to get up; but during the morning I fell asleep and had another dream, which was intensely realistic and made me believe--yes, convinced me--that you were well. After that dream I soon recovered; but oh, the anguish of the first!"
Ayrault did not tell her then that he had been near her, and of his unspeakable suffering, of which hers had been but the echo.