The Tartars who now threatened the Russian Empire, belonged to the Caucasian race, and occupied Turkestan. This immense country is divided into different states, governed by Khans, and hence termed Khanats. The principal khanats are those of Bokhara, Khokhand, Koondooz, etc. At this period, the most important and the most formidable khanat was that of Bokhara. Russia had already been several times at war with its chiefs, who, for their own interests, had supported the independence of the Kirghiz against the Muscovite dominion. The present chief, Feofar-Khan, followed in the steps of his predecessors. The khanat of Bokhara has a population of two million five hundred thousand inhabitants, an army of sixty thousand men, trebled in time of war, and thirty thousand horsemen. It is a rich country, with varied animal, vegetable, and mineral products, and has been increased by the accession of the territories of Balkh, Aukoi, and Meimaneh. It possesses nineteen large towns. Bokhara, surrounded by a wall measuring more than eight English miles, and flanked with towers, a glorious city, made illustrious by Avicenna and other learned men of the tenth century, is regarded as the center of Mussulman science, and ranks among the most celebrated cities of Central Asia. Samarcand, which contains the tomb of Tamerlane and the famous palace where the blue stone is kept on which each new khan must seat himself on his accession, is defended by a very strong citadel. Karschi, with its triple cordon, situated in an oasis, surrounded by a marsh peopled with tortoises and lizards, is almost impregnable, Is-chardjoui is defended by a population of twenty thousand souls. Protected by its mountains, and isolated by its steppes, the khanat of Bokhara is a most formidable state; and Russia would need a large force to subdue it.