When, at last, he opened his eyes, he was puzzled to determine where he was. Beneath him stretched a vast, sandy plain, and speeding across this he came to a land abounding in luxuriant vegetation.
The centrifugal force which propelled him was evidently, for some reason, greatly accelerated, for the scenery of the country he was crossing glided by him at so rapid a rate of speed that it nearly took his breath away.
"I wonder if I've passed Vienna in the night," he thought. "It ought not to have taken me more than a few hours to reach there from Paris."
Vienna was at that moment fifteen hundred miles behind him; but Rob's geography had always been his stumbling block at school, and he had not learned to gage the speed of the traveling machine; so he was completely mystified as to his whereabouts.
Presently a village having many queer spires and minarets whisked by him like a flash. Rob became worried, and resolved to slow up at the next sign of habitation.
This was a good resolution, but Turkestan is so thinly settled that before the boy could plan out a course of action he had passed the barren mountain range of Thian-Shan as nimbly as an acrobat leaps a jumping-bar.
"This won't do at all!" he exclaimed, earnestly. "The traveling machine seems to be running away with me, and I'm missing no end of sights by scooting along up here in the clouds."
He turned the indicator to zero, and was relieved to find it obey with customary quickness. In a few moments he had slowed up and stopped, when he found himself suspended above another stretch of sandy plain. Being too high to see the surface of the plain distinctly he dropped down a few hundred feet to a lower level, where he discovered he was surrounded by billows of sand as far as his eye could reach.
"It's a desert, all right," was his comment; "perhaps old Sahara herself."
He started the machine again towards the east, and at a more moderate rate of speed skimmed over the surface of the desert. Before long he noticed a dark spot ahead of him which proved to be a large body of fierce looking men, riding upon dromedaries and slender, spirited horses and armed with long rifles and crookedly shaped simitars.
"Those fellows seem to be looking for trouble," remarked the boy, as he glided over them, "and it wouldn't be exactly healthy for an enemy to get in their way. But I haven't time to stop, so I'm not likely to get mixed up in any rumpus with them."