IN WHICH PHILEAS FOGG SIMPLY DOES HIS DUTY.
Three passengers-including Passepartout-had disappeared.Had they been killed in the Struggle？Were they taken prisoners by the Sioux？It was impossible to tell.
There were many wounded，but none mortally.Colonel Proctor was one of the most Seriously hurt；he had fought bravely，and a ball had entered his groin.He was carried into the station with the other wounded passengers，to receive such attention as could be of avail.
Aouda was safe；and Phileas Fogg，who had been in the thickest of the fight，had not received a scratch.Fix was slightly wounded in the arm.But Passepartout was not to be found，and tears coursed down Aouda's cheeks.
All the passengers had got out of the train，the wheels of which were stained with blood.From the tires and spokes hung ragged pieces of flesh.As far as the eye could reach on the white plain behind，red trails were visible.The last Sioux were disappearing in the south，along the banks of Republican River.
Mr Fogg，with folded arms，remained motionless.He had a serious decision to make.Aouda，standing near him，looked at him without speaking，and he understood her look.If his Servant was a prisoner，ought he not to risk everything to rescue him from the Indians？I will find him，living or dead，said he quietly to Aouda.
Ah，Mr-Mr Fogg！cried she，clasping his hands and covering them with tears.
Living，added Mr Fogg，if we do not lose a moment.
Phileas Fogg，by this resolution，inevitably sacrificed himself；he pronounced his own doom.The delay of a single day would make him lose the steamer at New York，and his bet would be certainly lost.But as he thought，It is my duty，he did not hesitate.
The commanding officer of Fort Kearney was there.A hundred of his soldiers had placed themselves in a position to defend the station，should the Sioux attack it.
Sir，said Mr Fogg to the captain，three passengers have disappeared.
Dead？asked the captain.
Dead or prisoners；that is the uncertainty which must be solved.Do you propose to pursue the Sioux？
That's a serious thing to do，sir，returned the captain.These Indians may retreat beyond the Arkansas，and I cannot leave the fort unprotected.
The lives of three men are in question，sir，said Phileas Fogg.
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 Mr，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 wad 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.