answerable for introducing the first; but that, if his excellency desired it, he would despatch a courier to learn the emperor's pleasure. As this would have retarded their movements another six weeks, the ambassador, who had not the wit to disguise the ladies in men's apparel, sent them back to Selinguisky, and continued his journey without them.
They now entered upon that vast table-land which was found by the Jesuits to be three thousand geometrical paces above the level of the sea, from which the mountains forming its southern boundary serve but as steps by which the traveller may descend to the low plains of China. The small undulations or eminences which break the uniformity of these vast steppes are covered with the rhubarb plant, which grows there spontaneously, and is propagated more rapidly by the aid of the marmot, which, burrowing in prodigious numbers at its roots, loosens the mould, and prepares it for the reception of the seeds. The roots are dug up for exportation by the Mongols, who carelessly bore holes through them, and hang them about their tents or on the horns of their sheep to dry.
After passing the Tula, no river again occurred north of the Great Wall. The mode of travelling here resembles, in some degree, that which prevails in the deserts of Arabia and Africa, except that the walls are more frequent, and the danger from marauders little or none. Their food, after the first few days, consisted of mutton only; but as this was of an excellent quality, the circumstance was not considered as a great hardship. In the course of their journey they traversed a large plain, thickly strewed with transparent red and yellow pebbles, which glittered beautifully in the sun, and were said to be cornelians and yellow sapphires, being hard, and taking a fine polish. The few Mongols whom they found wandering with their flocks and herds over the waste, appeared more contented and happy
