Alexander administered the government so much in accordance with the will of his haughty masters, that the khan gradually increased his dominion. Bati, the Tartar chieftain, who was encamped with his army on the banks of the Volga and the Don, died in the year 1257, and his bloody sword, the only scepter of his power, passed into the hands of his brother Berki. Alexander felt compelled to hasten to the Tartar camp, with expressions of homage to the new captain, and with rich presents to conciliate his favor. Many of the Tartars had by this time embraced Christianity, and there were frequent intermarriages between the Russian nobles and princesses of the Tartar race. It is a curious fact, that even then the Tartars were so conscious of the power of the clergy over the popular mind, that they employed all the arts of courtesy and bribes to secure their influence to hold the Russians in subjection. The Tartars exacted enormous tribute from the subjugated country. An insurrection, headed by a son of Alexander, broke out at Novgorod. The grand prince, terrified in view of the Mogol wrath which might be expected to overwhelm him, arrested and imprisoned his son, who had countenanced the enterprise, and punished the nobles implicated in the movement with terrible severity. Some were hung; others had their eyes plucked out and their noses cut off. But, unappeased by this fearful retribution, the Tartars were immediately on the march to avenge, with their own hands, the crime of rebellion. Their footsteps were marked with such desolation and cruelty that the Russians, goaded to despair, again ventured, like the crushed worm, an impotent resistance. Alexander himself was compelled to join the Tartars, and aid in cutting down his wretched countrymen.