About fifty versts to the south of Sultan Ishonac’s aul, lie the Barluck Mountains, situated between the Tarbagatai and the Alatou Mountains, and eastward of the small rocky chain of the Ala-Kool, which extends some sixty versts from east to west, and measures about twenty-five in breadth. The highest summit is not more than three thousand feet above the plain. Vegetation thrives on the lower slopes, but the upper parts are gloomily bare. From Sultan Ishonac Khan Mr. Atkinson obtained a loan of fresh horses, and of eight of his Kirghiz to escort him to the Tarbagatai. A dreary ride it was,—over sandy hills, through sandy valleys, where not even a blade of grass was green. In many places the ground was thickly covered with a saline incrustation, which the horses’ feet churned up into a pungent dust, that filled every mouth and caused intolerable thirst. Welcome was the glimmer of a lake that relieved by its sparkle the dulness of the landscape; but when horse and man rushed forward to drink of its waters, to their intense disappointment they found them bitter as those of Marah. Not till the evening of the fifth day, when they reached the river Eremil, did they enjoy the luxury of fresh water. Next day they reached the Tarbagatai, in the neighbourhood of the Chinese town of Tchoubuchack, and encamped for the night at the foot of a great tumulus or barrow, about one hundred and fifty feet high, which is surrounded by many smaller barrows. They are the last resting-places of a Kirghiz chief and his people, who belonged to a remote generation, and to a race of which these tumuli are the only memorials. Another day’s ride, and they arrived at the aul of Sultan Iamantuck, of whom and his family Mr. Atkinson speaks as by far the most intelligent people he met with in this part of Asia. The aul was pitched among high conical tombs of sun-burnt bricks, the cemetery of the Sultan’s ancestors; and it appears that once a year it was regularly visited by their pious descendant and representative. With another relay of horses and a fresh Kirghiz escort, Mr. Atkinson dashed onward, undeterred by the dreariness of the sandy level, where neither water nor grass was to be found, and the only living things were tarantulas and scorpions. His course lay direct for the Alatou (“Variegated Mountains”), and he could see the shining peaks of the Actou (“White Mountain”), which forms its highest crest, and raises its summits fourteen to fifteen thousand feet above the sea. After fording the broad deep stream of the Yeljen-sa-gash, he arrived on the shore of Lake Ala-kool, measuring about sixty-five versts in length by twenty in width, with a rocky island near the north shore, erroneously described by Humboldt as the site of a volcano. It has no outlet, yet it receives the tribute of eight rivers; the water is carried off by evaporation.