SUCH were now the relative situations of Marfa Strogoff and Nadia. All was understood by the old Siberian， and though the young girl was ignorant that her much-regretted companion still lived， she at least knew his relationship to her whom she had made her mother；and she thanked God for having given her the joy of taking the place of the son whom the prisoner had lost.
But what neither of them could know was that Michael， having been captured at Kolyvan， was in the same convoy and was on his way to Tomsk with them.
The prisoners brought by Ivan Ogareff had been added to those already kept by the Emir in the Tartar camp. These unfortunate people， consisting of Russians， Siberians， soldiers and civilians， numbered some thousands， and formed a column which extended over several versts. Some among them being considered dangerous were handcuffed and fastened to a long chain.
There were， too， women and children， many of the latter suspended to the pommels of the saddles， while the former were dragged mercilessly along the road on foot， or driven forward as if they were animals.
The horsemen compelled them to maintain a certain order， and there were no laggards with the exception of those who fell never to rise again.
In consequence of this arrangement， Michael Strogoff， marching in the first ranks of those who had left the Tartar camp--that is to say， among the Kolyvan prisoners--was unable to mingle with the prisoners who had arrived after him from Omsk. He had therefore no suspicion that his mother and Nadia were present in the convoy， nor did they suppose that he was among those in front.
This journey from the camp to Tomsk， performed under the lashes and spear-points of the soldiers， proved fatal to many， and terrible to all.
The prisoners traveled across the steppe， over a road made still more dusty by the passage of the Emir and his vanguard.
Orders had been given to march rapidly. The short halts were rare.
The hundred miles under a burning sky seemed interminable， though they were performed as rapidly as possible.
The country， which extends from the right of the Obi to the base of the spur detached from the Sayanok Mountains， is very sterile. Only a few stunted and burnt-up shrubs here and there break the monotony of the immense plain.
There was no cultivation， for there was no water； and it was water that the prisoners， parched by their painful march， most needed.
To find a stream they must have diverged fifty versts eastward， to the very foot of the mountains.
There flows the Tom， a little affluent of the Obi， which passes near Tomsk before losing itself in one of the great northern arteries.
There water would have been abundant， the steppe less arid， the heat less severe. But the strictest orders had been given to the commanders of the convoy to reach Tomsk by the shortest way， for the Emir was much afraid of being taken in the flank and cut off by some Russian column descending from the northern provinces.
It is useless to dwell upon the sufferings of the unhappy prisoners.
Many hundreds fell on the steppe， where their bodies would lie until winter， when the wolves would devour the remnants of their bones.
As Nadia helped the old Siberian， so in the same way did Michael render to his more feeble companions in misfortune such services as his situation allowed. He encouraged some， supported others， going to and fro， until a prick from a soldier's lance obliged him to r俿um？the place which had been assigned him in the ranks.
Why did he not endeavor to escape？
The reason was that he had now quite determined not to venture until the steppe was safe for him. He was resolved in his idea of going as far as Tomsk "at the Emir's expense，" and indeed he was right.
As he observed the numerous detachments which scoured the plain on the convoy's flanks， now to the south， now to the north， it was evident that before he could have gone two versts he must have been recaptured. The Tartar horsemen swarmed--it actually appeared as if they sprang from the earth--like insects which a thunderstorm brings to the surface of the ground.
Flight under these conditions would have been extremely difficult， if not impossible. The soldiers of the escort displayed excessive vigilance， for they would have paid for the slightest carelessness with their heads.
At nightfall of the 15th of August， the convoy reached the little village of Zabediero， thirty versts from Tomsk.
The prisoners' first movement would have been to rush into the river， but they were not allowed to leave the ranks until the halt had been organized. Although the current of the Tom was just now like a torrent， it might have favored the flight of some bold or desperate man， and the strictest measures of vigilance were taken. Boats， requisitioned at Zabediero， were brought up to the Tom and formed a line of obstacles impossible to pass.
As to the encampment on the outskirts of the village， it was guarded by a cordon of sentinels.
Michael Strogoff， who now naturally thought of escape， saw， after carefully surveying the situation， that under these conditions it was perfectly impossible； so， not wishing to compromise himself， he waited.
The prisoners were to encamp for the whole night on the banks of the Tom， for the Emir had put off the entrance of his troops into Tomsk. It had been decided that a military fete should mark the inauguration of the Tartar headquarters in this important city.
Feofar-Khan already occupied the fortress， but the bulk of his army bivouacked under its walls， waiting until the time came for them to make a solemn entry.
Ivan Ogareff left the Emir at Tomsk， where both had arrived the evening before， and returned to the camp at Zabediero. From here he was to start the next day with the rear-guard of the Tartar army.
A house had been arranged for him in which to pass the night.