"As has been mentioned in the Preface, these appeared, in translated form, in 1776, in Vol. I of the great collection of _Memoires concernant les Chinois_, published at Paris by the enterprise of the French Jesuit missionaries at Pekin. The most important of them, under the title _Monument de la Transmigration des Tourgouths des Bords de la Mer Caspienne dans l'Empire de la Chine_, occupies twenty-seven pages of the volume, and purports to be a translation of a Chinese document drawn up by the Emperor Kien Long himself. This Emperor, described by the missionaries as 'the best-lettered man in his Empire,' had special reasons for so commemorating, as one of the most interesting events of his reign, the sudden self-transference in 1771 of so large a Tartar horde from the Russian allegiance to his own. Much of the previous part of his reign had been spent in that work of conquering and consolidating the Tartar appendages of his Empire which had been begun by his celebrated grandfather, the Emperor Kang Hi (1661-1721); and it so chanced that the particular Tartar horde which now, in 1771, had marched all the way from the shores of the Caspian to appeal to him for protection and for annexation to the Chinese Empire were but the posterity of a horde who had formerly belonged to that Empire, but had detached themselves from it, in the reign of Kang Hi, by a contrary march westward to annex themselves to the Russian dominions. The event of 1771, therefore, was gratifying to Kien Long as completing his independent exertions among the Tartars on the fringes of China by the voluntary re-settlement within those fringes, and return to the Chinese allegiance, of a whole Tartar population which had been astray, and under unfit and alien rule, for several generations. With this explanation the following sentences from Kien Long's Memoir, containing all its historical substance, will be fully intelligible: