"Doubtless; but can I risk the lives of fifty men to save three?"

"I don't know whether you can, sir; but you ought to do so."

"Nobody here," returned the other, "has a right to teach me my duty."

"Very well," said Mr. Fogg, coldly. "I will go alone."

"You, sir!" cried Fix, coming up; "you go alone in pursuit of the Indians?"

"Would you have me leave this poor fellow to perish-- him to whom every one present owes his life? I shall go."

"No, sir, you shall not go alone," cried the captain, touched in spite of himself. "No! you are a brave man. Thirty volunteers!" he added, turning to the soldiers.

The whole company started forward at once. The captain had only to pick his men. Thirty were chosen, and an old sergeant placed at their head.

"Thanks, captain," said Mr. Fogg.

"Will you let me go with you?" asked Fix.

"Do as you please, sir. But if you wish to do me a favour, you will remain with Aouda. In case anything should happen to me--"

A sudden pallor overspread the detective's face. Separate himself from the man whom he had so persistently followed step by step! Leave him to wander about in this desert! Fix gazed attentively at Mr. Fogg, and, despite his suspicions and of the struggle which was going on within him, he lowered his eyes before that calm and frank look.

"I will stay," said he.

A few moments after, Mr. Fogg pressed the young woman's hand, and, having confided to her his precious carpet-bag, went off with the sergeant and his little squad. But, before going, he had said to the soldiers, "My friends, I will divide five thousand dollars among you, if we save the prisoners."

It was then a little past noon.

Aouda retired to a waiting-room, and there she waited alone, thinking of the simple and noble generosity, the tranquil courage of Phileas Fogg. He had sacrificed his fortune, and was now risking his life, all without hesitation, from duty, in silence.

Fix did not have the same thoughts, and could scarcely conceal his agitation. He walked feverishly up and down the platform, but soon resumed his outward composure. 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, Fix, 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 succour 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; and it had finally stopped an hour after, some twenty miles beyond Fort Kearney.