Apprehending the real state of affairs, the Emperor instantly perceived that the first act of his fatherly care for these erring children (as he esteemed them) now returning to their ancient obedience, must be-- to deliver them from their pursuers. And this was less difficult than might have been supposed. Not many miles in the rear was a body of well appointed cavalry, with a strong detachment of artillery, who always attended the Emperor's motions. These were hastily summoned. Meantime it occurred to the train of courtiers that some danger might arise to the Emperor's person from the proximity of a lawless enemy; and accordingly he was induced to retire a little to the rear. It soon appeared, however, to those who watched the vapory shroud in the desert, that its motion was not such as would argue the direction of the march to be exactly upon the pavilion, but rather in a diagonal line, making an angle of full forty-five degrees with that line in which the Imperial _cortège_ had been standing, and therefore with a distance continually increasing. Those who knew the country judged that the Kalmucks were making for a large fresh-water lake about seven or eight miles distant; they were right; and to that point the Imperial cavalry was ordered up; and it was precisely in that spot, and about three hours after and at noon-day on the 8th of September, that the great Exodus of the Kalmuck Tartars was brought to a final close, and with a scene of such memorable and hellish fury, as formed an appropriate winding-up to an expedition in all its parts and details so awfully disastrous. The Emperor was not personally present, or at least he saw whatever he _did_ see from too great a distance to discriminate its individual features; but he records in his written memorial the report made to him of this scene by some of his own officers.