, the rest were to leave fighting the enemy, and
attack the portion flying, and kill them all upon the spot.

The emperor also made formal provision for the event of his dying in
the course of the campaign. In this case a grand assembly of all the
khans and chieftains of the empire was to be convened, and then, in
the presence of these khans and of his sons, the constitution and
laws of the empire, as he had established them, were to be read, and
after the reading the assembly were to proceed to the election of a
new khan, according to the forms which the constitution had provided.

After all these affairs had been arranged, Genghis Khan put his army
in motion. He was obliged, of course, to separate it into several
grand divisions, and to send the several divisions forward by
different roads, and through different sections of the country. So
large a body can never be kept together on a long march, on account of
the immense quantity of food that is required, both for the horses and
the men, and which must be supplied in the main by the country itself
which they traverse, since neither horses nor men can carry food with
them for more than a very few days.

Genghis Khan put one of the largest divisions under the command of his
son Jughi, the prince who distinguished himself so much in the
conflicts by which his father raised himself to the supreme power.

Jughi was ordered to advance with his division through Turkestan, the
country where the Prince Kushluk had sought refuge, and which still
remained, in some degree, disaffected toward Genghis Khan. Genghis
Khan himself, with the main body of the army, took a more southerly
route directly toward the dominions of the sultan.

In the mean time the sultan himself had not been idle. He collected
together all the forces that he could command. When they were
mustered, the number of men was found to be four hundred thousand.
This was a large army, though much smaller than that of Genghis Khan.

The sultan set out upon his march with his troops to meet the
invaders. After advancing for some distance, he learned that the army
of Jughi, which had passed through Turkestan, was at the northward of
his position, and he found that by turning in that direction he might
hope to meet and conquer that part of the Mongul force before it could
have time to join the main body. He determined at once to adopt this
plan.

He accordingly turned his course, and marched forward into the part o