"We are twenty minutes late, and we shall not stop."

"But I am going to fight a duel with this gentleman."

"I am sorry," said the conductor; "but we shall be off at once. There's the bell ringing now."

The train started.

"I'm really very sorry, gentlemen," said the conductor. "Under any other circumstances I should have been happy to oblige you. But, after all, as you have not had time to fight here, why not fight as we go along?

"That wouldn't be convenient, perhaps, for this gentleman," said the colonel, in a jeering tone.

"It would be perfectly so," replied Phileas Fogg.

"Well, we are really in America," thought Passepartout, "and the conductor is a gentleman of the first order!"

So muttering, he followed his master.

The two combatants, their seconds, and the conductor passed through the cars to the rear of the train. The last car was only occupied by a dozen passengers, whom the conductor politely asked if they would not be so kind as to leave it vacant for a few moments, as two gentlemen had an affair of honour to settle. The passengers granted the request with alacrity, and straightway disappeared on the platform.

The car, which was some fifty feet long, was very convenient for their purpose. The adversaries might march on each other in the aisle, and fire at their ease. Never was duel more easily arranged. Mr. Fogg and Colonel Proctor, each provided with two six-barrelled revolvers, entered the car. The seconds, remaining outside, shut them in. They were to begin firing at the first whistle of the locomotive. After an interval of two minutes, what remained of the two gentlemen would be taken from the car.

Nothing could be more simple. Indeed, it was all so simple that Fix and Passepartout felt their hearts beating as if they would crack. They were listening for the whistle agreed upon, when suddenly savage cries resounded in the air, accompanied by reports which certainly did not issue from the car where the duellists were. The reports continued in front and the whole length of the train. Cries of terror proceeded from the interior of the cars.

Colonel Proctor and Mr. Fogg, revolvers in hand, hastily quitted their prison, and rushed forward where the noise was most clamorous. They then perceived that the train was attacked by a band of Sioux.

This was not the first attempt of these daring Indians, for more than once they had waylaid trains on the road. A hundred of them had, according to their habit, jumped upon the steps without stopping the train, with the ease of a clown mounting a horse at full gallop.

The Sioux were armed with guns, from which came the reports, to which the passengers, who were almost all armed, responded by revolver-shots.

The Indians had first mounted the engine, and half stunned the engineer and stoker with blows from their muskets. A Sioux chief, wishing to stop the train, but not knowing how to work the regulator, had opened wide instead of closing the steam-valve, and the locomotive was plunging forward with terrific velocity.

The Sioux had at the same time invaded the cars, skipping like enraged monkeys over the roofs, thrusting open the doors, and fighting hand to hand with the passengers. Penetrating the baggage-car, they pillaged it, throwing the trunks out of the train. The cries and shots were constant. The travellers defended themselves bravely; some of the cars were barricaded, and sustained a siege, like moving forts, carried along at a speed of a hundred miles an hour.

Aouda behaved courageously from the first. She defended herself like a true heroine with a revolver, which she shot through the broken windows whenever a savage made his appearance. Twenty Sioux had fallen mortally wounded to the ground, and the wheels crushed those who fell upon the rails as if they had been worms. Several passengers, shot or stunned, lay on the seats.

It was necessary to put an end to the struggle, which had lasted for ten minutes, and which would result in the triumph of the Sioux if the train was not stopped.