Again must we go to the "roof of the world" to behold the great eruption of Moguls and Tartars whose fierce and rapid and cruel conquests can only be compared with the destructive forces of nature in her wildest moods when she lets loose upon the earth fire and flood, earthquake, avalanche and volcano. From these spacious highlands the tides of emigration and the floods of war have repeatedly been poured. In the twelfth century the various tribes akin to Hun and Turk were united and led to conquest by the formidable Jenghiz Khan, i. e. the most great Khan or Emperor of the Moguls and Tartars. The code of laws which Jenghiz Khan dictated to his subjects was adapted to the preservation of domestic peace and the exercise of foreign hostility. These fiercest of men were mild and just in their intercourse with each other. Their primitive religion consisted in belief in the existence of one God, the author of all good, who fills by His presence the heavens and the earth which He has created by His power. The Tartars and Moguls were addicted to the idols of their various tribes yet there were among them converts to the religions of Moses, Mohammed and of Christ. Soon all the kindred tribes from the great wall of China to the Volga owned his sway. He was the Khan of many millions of shepherds and warriors. The court of Pekin was astonished at receiving an embassy from a former vassal demanding the same tribute and obedience which he himself had but lately paid. On receiving a haughty answer innumerable squadrons soon pierced on all sides the feeble rampart of the great wall and ninety cities were laid low. On his second invasion he laid siege to Pekin. The famine was terrible. Men were chosen by lot to be slain for food. The Moguls mined under the capital and the conflagration of the city lasted for thirty days. China was desolated by Tartar war and domestic faction and the five northern provinces were added to the empire of Jenghiz. On the west he touched the dominions of Mohammed, sultan of Carizme, who reigned from the Persian gulf to the borders of India and Turkestan.