It was then seven o'clock.

The captain, who was really alarmed, did not know what course to take.

Should he send another detachment to the rescue of the first? Should he sacrifice more men, with so few chances of saving those already sacrificed? His hesitation did not last long, however. Calling one of his lieutenants, he was on the point of ordering a reconnaissance, when gunshots were heard. Was it a signal? The soldiers rushed out of the fort, and half a mile off they perceived a little band returning in good order.

Mr. Fogg was marching at their head, and just behind him were Passepartout and the other two travellers, rescued from the Sioux.

They had met and fought the Indians ten miles south of Fort Kearney. Shortly before the detachment arrived, Passepartout and his companions had begun to struggle with their captors, three of whom the Frenchman had felled with his fists, when his master and the soldiers hastened up to their relief.

All were welcomed with joyful cries. Phileas Fogg distributed the reward he had promised to the soldiers, while Passepartout, not without reason, muttered to himself, "It must certainly be confessed that I cost my master dear!"

Fix, without saying a word, looked at Mr. Fogg, and it would have been difficult to analyse the thoughts which struggled within him. As for Aouda, she took her protector's hand and pressed it in her own, too much moved to speak.

Meanwhile, Passepartout was looking about for the train; he thought he should find it there, ready to start for Omaha, and he hoped that the time lost might be regained.

"The train! the train!" cried he.

"Gone," replied Fix.

"And when does the next train pass here?" said Phileas Fogg.

"Not till this evening."

"Ah!" returned the impassible gentleman quietly.

Chapter XXXI

IN WHICH FIX, THE DETECTIVE, CONSIDERABLY FURTHERS THE INTERESTS OF PHILEAS FOGG

Phileas Fogg found himself twenty hours behind time. Passepartout, the involuntary cause of this delay, was desperate. He had ruined his master!

At this moment the detective approached Mr. Fogg, and, looking him intently in the face, said:

"Seriously, sir, are you in great haste?"

"Quite seriously."

"I have a purpose in asking," resumed Fix. "Is it absolutely necessary that you should be in New York on the 11th, before nine o'clock in the evening, the time that the steamer leaves for Liverpool?"

"It is absolutely necessary."

"And, if your journey had not been interrupted by these Indians, you would have reached New York on the morning of the 11th?"

"Yes; with eleven hours to spare before the steamer left."

"Good! you are therefore twenty hours behind. Twelve from twenty leaves eight. You must regain eight hours. Do you wish to try to do so?"

"On foot?" asked Mr. Fogg.

"No; on a sledge," replied Fix. "On a sledge with sails. A man has proposed such a method to me."

It was the man who had spoken to Fix during the night, and whose offer he had refused.

Phileas Fogg did not reply at once; but Fix, having pointed out the man, who was walking up and down in front of the station, Mr. Fogg went up to him. An instant after, Mr. Fogg and the American, whose name was Mudge, entered a hut built just below the fort.

There Mr. Fogg examined a curious vehicle, a kind of frame on two long beams, a little raised in front like the runners of a sledge, and upon which there was room for five or six persons. A high mast was fixed on the frame, held firmly by metallic lashings, to which was attached a large brigantine sail. This mast held an iron stay upon which to hoist a jib-sail. Behind, a sort of rudder served to guide the vehicle. It was, in short, a sledge rigged like a sloop. During the winter, when the trains are blocked up by the snow, these sledges make extremely rapid journeys across the frozen plains from one station to another. Provided with more sails than a cutter, and with the wind behind them, they slip over the surface of the prairies with a speed equal if not superior to that of the express trains.