“Brisbane also stood in the open air.”

“Those mountains to the right—let me show you them.” She pushed back a metal blind. The main chain of the Himalayas was revealed. “They were once called the Roof of the World, those mountains.”

“What a foolish name!”

“You must remember that, before the dawn of civilisation, they seemed to be an impenetrable wall that touched the stars. It was supposed that no one but the gods could exist above their summits. How we have advanced, thanks to the Machine!”

“How we have advanced, thanks to the Machine!” said Vashti.

“How we have advanced, thanks to the Machine!” echoed the passenger who had dropped his Book the night before, and who was standing in the passage.

“And that white stuff in the cracks?—what is it?”

“I have forgotten its name.”

“Cover the window, please. These mountains give me no ideas.”

The northern aspect of the Himalayas was in deep shadow: on the Indian slope the sun had just prevailed. The forests had been destroyed during the literature epoch for the purpose of making newspaper-pulp, but the snows were awakening to their morning glory, and clouds still hung on the breasts of Kinchinjunga. In the plain were seen the ruins of cities, with diminished rivers creeping by their walls, and by the sides of these were sometimes the signs of vomitories, marking the cities of today. Over the whole prospect airships rushed, crossing and intercrossing with incredible aplomb, and rising nonchalantly when they desired to escape the perturbations of the lo;£r atmosphere and to traverse the Roof of the World.