Jack's words roused him like an electric shock. He pushed us aside, and struggled to his feet. Then he sprang to a knob, and brought the car to rest.
We had been moving slowly, and had not gone more than a quarter of a mile from the tower. The car had swung round so that the fire was not visible from the open door, but now, as Edmund arrested its progress, it swayed back again and the spectacle burst into view. The heat smote us in the face even at this distance. In the few minutes since I had last seen the tower the flames had made incredible progress. The whole of the immense structure was blazing. Spires of flame leaped and swayed from its summit, partitions were falling, platforms giving way, and hundreds of air ships caught by the sheets of fire were crumpling and falling in swooping curves like birds whose wings had been seared. I was thankful that we could not see the unfortunates who were perishing in that furnace. It was but too evident that not a soul on the tower could have escaped.
I glanced at Edmund's face. It was pale and set—the face of a man gazing upon an awful tragedy with which he is absolutely powerless to interfere. His breath came quick, but he did not utter a word. Then came the reaction, and, staggering, he leaned on my shoulder, and I led him to the bench from which he had risen. For a moment I thought he had fainted, but when I put a flask to his lips he swallowed a mouthful and immediately recovered sufficient strength to sit up, resting his head on his hand.
"Had we not better go on?" I asked.
"Ye-es," he replied, after a moment's hesitation. "We can do nothing. They are all gone; the queen has perished with the rest! Pull out that knob on the right, but gently, and then push this button. We must circle round the outskirts until we see whether the fire will seize upon the other towers and extend to the city below."
I followed his directions, and, as we started our circuit, the vast tower suddenly swayed aside, and then, tumbling in upon itself, it went down in a whirl of smoke and eddying sparks.
As far as we could see none of the other aerial structures had caught fire. The entire absence of wind was no doubt the favorable circumstance that saved them. But all the towers were swaying under the impulse imparted to them by the excited multitudes that crowded their platforms. Although the light of the conflagration faded as soon as the principal tower fell, the others continued to shine brilliantly in the solar rays, but suddenly, as we watched, the splendor failed, and the subdued illumination characteristic of the endless daylight under the great dome took its place. The rift in the clouds above had closed as unexpectedly as it had recently opened, and the sun was no longer visible. It had been in view less than an hour, but in that brief space what scenes had been enacted!
Presently Edmund, shaking his head sadly, said:
"It is useless to stay longer. Even if the conflagration should spread we could do nothing to help the unfortunates. They must depend upon themselves."
He then gave me directions for changing our course to a direct line away from the city, at the same time increasing the speed. In the meantime he himself aided in binding up his wound.