Toises. English feet. Plateau of Auvergne 170 1087 „ of Bavaria 260 1663 „ of Castille 350 2239 „ of Mysore 460 2942 „ of Caraccas 480 3070 „ of Popayan 900 5756 „ round Lake Tzana (in Abyssinia) 950 6076 „ of the Orange River (in South Africa) 1000 6395 „ of Axum (in Abyssinia) 1100 7034 „ of Mexico 1170 7483 „ of Quito 1490 9528 „ of the Province de los Pastos 1600 10231 „ round Lake Titiaca 2010 12853 No portion of the so-called Desert of Gobi (parts of which contain fine pastures) has been so thoroughly explored in respect to the differences of elevation as the zone, of nearly 600 geographical miles in breadth, between the sources of the Selenga and the great Wall of China. A very exact series of barometric levellings was executed under the auspices of the Academy of St. Petersburgh by two distinguished Savans, the astronomer George Fuss, and the botanist Bunge. In the year 1832 they accompanied the mission of Greek monks to Pekin, to establish there one of the magnetic stations recommended by me. The mean height of this part of Gobi does not amount, as had been too hastily inferred from the measurement of neighbouring summits by the Jesuits Gerbillon and Verbiest to from 7500 to 8000 French (8000 to 8500 English) feet, but only to little more than half that height, or barely 4000 French or 4264 English feet. Between Erghi, Durma, and Scharaburguna, the ground is only 2400 French, or 2558 English, feet above the level of the sea, or hardly 300 French (320 English) feet higher than the plateau of Madrid. Erghi is situated midway, in lat. 45° 31′, long. 111° 26′ E. from Greenwich. There is here a depression of more than 240 miles in breadth, in a SW. and NE. direction. An ancient Mogul tradition marks it as the bottom of a former inland sea. There are found in it reeds and saline plants, mostly of the same kinds as those on the low shores of the Caspian. In this central part of the desert there are small salt lakes, from which salt is carried to China. According to a singular opinion very prevalent among the Moguls, the ocean will one day return and establish its empire anew in Gobi. One is reminded of the Chinese tradition of the _bitter lake_, in the interior of Siberia, mentioned by me in another work. (Humboldt, Asie Centrale, tom. ii. p. 141; Klaproth, Asia Polyglotta, p. 232.) The valley or basin of Kashmeer, so enthusiastically extolled by Bernier, and but too moderately praised