He now saw the folly of which he had been guilty in letting Fogg go alone. What! This man, whom he had just followed around the world, was permitted now to separate himself from him! He began to accuse and abuse himself, and, as if he were director of police, administered to himself a sound lecture for his greenness.

"I have been an idiot!" he thought, "and this man will see it. He has gone, and won't come back! But how is it that I, who have in my pocket a warrant for his arrest, have been so fascinated by him? Decidedly, I am nothing but an ass!"

So reasoned the detective, while the hours crept by all too slowly. He did not know what to do. Sometimes he was tempted to tell Aouda all, but he could not doubt how the young woman would receive his confidences. What course should he take? He thought of pursuing Fogg across the vast white plains. It did not seem impossible that he might overtake him. Footsteps were easily printed on the snow! But soon, under a new sheet, every imprint would be effaced.

Fix became discouraged. He felt a sort of insurmountable longing to abandon the game altogether. He could now leave Fort Kearney station, and pursue his journey homeward in peace.

Towards two o'clock in the afternoon, while it was snowing hard, long whistles were heard approaching from the east. A great shadow, preceded by a wild light, slowly advanced, appearing still larger through the mist, which gave it a fantastic aspect. No train was expected from the east, neither had there been time for the help asked for by telegraph to arrive. The train from Omaha to San Francisco was not due till the next day. The mystery was soon explained.

The locomotive, which was slowly approaching with deafening whistles, was that which, having been detached from the train, had continued its route with such terrific rapidity, carrying off the unconscious engineer and stoker. It had run several miles, when, the fire becoming low for want of fuel, the steam had slackened. It had finally stopped an hour after, some twenty miles beyond Fort Kearney. Neither the engineer nor the stoker was dead. After remaining for some time in their swoon, they had come to themselves. The train had then stopped. The engineer, when he found himself in the desert, and the locomotive without cars, understood what had happened. He could not imagine how the locomotive had become separated from the train, but he did not doubt that the train left behind was in distress.

He did not hesitate what to do. It would be prudent to continue on to Omaha, for it would be dangerous to return to the train, which the Indians might still be engaged in pillaging. Nevertheless, he began to rebuild the fire in the furnace; the pressure again mounted, and the locomotive returned, running backwards to Fort Kearney. This it was which was whistling in the mist.

The travelers were glad to see the locomotive resume its place at the head of the train. They could now continue the journey so terribly interrupted.

Aouda, on seeing the locomotive come up, hurried out of the station, and asked the conductor, "Are you going to start?"

"At once, madam."

"But the prisoners, our unfortunate fellow-travelers -"

"I cannot interrupt the trip," replied the conductor. "We are already three hours behind time."

"And when will another train pass here from San Francisco?"

"Tomorrow evening, madam."

"Tomorrow evening! But then it will be too late! We must wait -"

"It is impossible," responded the conductor. "If you wish to go, please get in.""I will not go," said Aouda.

Fix had heard this conversation. A little while before, when there was no prospect of proceeding on the journey, he had made up his mind to leave Fort Kearney; but now that the train was there, ready to start, and he had only to take his seat in the car, an irresistible influence held him back. The station platform burned his feet, and he could not stir. The conflict in his mind again began; anger and failure stifled him. He wished to struggle on to the end.